Hello Andy, I have been following your Off-grid-garage channel for a long time. I have also received a lot of good information. After the video about Yixiang DIY battery case, I also ordered 3 of them. They work, although I still have to exchange my Cerbo-S for a Cerbo GX MK2 so that I can integrate and display the JK BMS in the Cerbo GX as you described. So far so good. Now I have seen your video about the firmware update of the JK-BP2A16S20P and wanted to update it via my PC and the JK software. I had the firmware V15.30 and also wanted to upgrade to V15.38. I got this version from your homepage. The update started and stopped at 38%. It didn't go any further. After about 2 hours at 38%, I canceled the update. After several resets, only the display appears and I no longer have access to the BMS. Neither via PC nor via the Bluetooth app from JK. My question: Do you have a tip for me on how I can get my JK BMS back? So how I can get access to the BMS again and update the firmware. I have 3 other Yixiang cases with JK BMS that also need a firmware update. But the firmware V15.33 is already available here. Thank you for your help - Greetings from good old Germany - Martin
Many thanks mr. solar. Very helpful, time to update for v. 14.20. I guess it will erase all the settings and you will need to re-type them as well. I was kind of crossfingering that you would have shown your complete settings as well as at least myself have bit troubles to catch somewhat "correct" values, even knowing that each solar system and environment may be different. It's bit of confusing sometimes when on the videos have screen recordings from app showing different setting values. Definitely NOT complaining, maybe just add snapshots to your web page, it would be crazy help for us beginners. But huge thanks for everything you do for the community. Best in YT.
Hello Andy, thanks for the great videos. A “USB to RS485 adapter serial converter interface for Raspberry Pi” can also be used to connect to the BMS. It's cheap. You just have to cut open a LAN cable and connect the wires correctly.
A couple of thoughts... If the BMS only needs battery minus (-) and battery plus (+) in order to flash, this makes it easy to do on the bench with a bench power supply. The hardware difference may be something as simple as supply chain issues requiring a second source supplier for a component that requires a slight change in firmware. My company has encountered this the past few years with flash memory, with PMIC, and some other pieces parts. Most of those were footprint compatible, but had slight differences necesary in the firmware to function correctly (or at all in some cases). Thanks for documenting this. WHAT A PAIN IT IS!
if I saw you video before...I bricked one V15 BMS while in Master-Slave config, but thanks to you I managed to unbrick it :). Keep up the good work Andy!
Brilliant Andy. JK is a great product but OMG the technical support is Desperate. I ordered and installed the Peter Boards thanks to your help. They are mighty Loads of data and in HA too. Of ourse with all these things there are unintended consequences . I have 4 battery banks almost exactly like yours . I have 4 JK BMS (200 A ) like your old ones , 2 No new ones with the 100% SOC setting,( Ver. 11.XA_S11.41). 1 no. with Ver 11.XW_S11.24H and 1 No with Ver 10.XW_S10.08. I performed a Top Bal last night and the 2 No New ones Ver. 11.XA_S11.41 Performed as expected and set the SOC to be 100% The 1 No with Ver 10.XW_S10.08. reported a SOC of 85% THe 1 No with Ver. 11.XA_S11.41 is report only some data and SOc is roughty correct but has moved 2% in a few hours . I watched the fireware update on the new jk bms . Question to the community, is can my older onles be updated to Software Vertion S11.41? I think I know the answer but one can always hope!
Hello Andy, thank you for the remarkable explanations. My first JK-BMS has arrived and I am now waiting behind my new EVE 320Ah batteries. I can't wait to explore with you with your clear videos. I appreciate your effort. regards Jean-Pierre from small Belgium
Good Morning Andy, would the Victron MK3 to USB cable work. Victron also sell an USB to RS485 interface cable that would need an RJ45 connector plug wired to it. Given I see so many issues surrounding comms for these BMS-inverter/computer connections, have you considered if terminating with the 120 Ohm resistor would reduce comms issues by better matchong the standard Cat5/6 ethernet/LAN cable as per RS485 recommendations?
That will definitely not work. The MK3 has specific software running and will only talk to Multi or Quattro. All communication is terminated correctly both ends. At least I hope so...
REPOST DUE TO SPELLING!! “Brilliant Andy. JK is a great product but OMG the technical support is Desperate. I ordered and installed the Peter Boards thanks to your help. They are mighty. Loads of data and in HA too.but with all these things ,there are unintended consequences . I have 4 battery banks almost exactly like yours . I have 4 JK BMS (200 A ) like your old ones , 2 No new ones with the 100% SOC setting,( Ver. 11.XA_S11.41). 1 no. with Ver 11.XW_S11.24H and 1 No with Ver 10.XW_S10.08. I performed a Top Bal last night and the 2 No New ones Ver. 11.XA_S11.41 Performed as expected and set the SOC to be 100% The 1 No with Ver 10.XW_S10.08. reported a SOC of 85% The 1 No with Ver. 11.XA_S11.41 is reporting only some data and SOC is roughly correct but has moved 2% in a few hours . I watched the firmware update on the new jk bms . Question to the community, is can my older ones be updated to Software Version S11.41? I think I know the answer, but one can always hope!”
The FW on the older BMS cannot be updated. Even if technically possible (maybe?) who do you get a new fw from??? In one of the next videos, I'll show how to reset older BMS to 100% without the need of going OVP all the time. Peter boards are crazy good. I love them! Thanks for sharing.
As usual Andy, you are a real blessing to the DIY community with these videos. Would be great if we knew what version 20 latest firmware changes include. By any chance do you know if these new JK BMSes will work with Solar Assistant for remote battery control and monitoring?
I also use Solar Assistant, which would be wonderful. The older version (JK-B2A24S-20P) works, unfortunately without information about the individual cells. I asked, it should be coming soon. What also annoys me in solar assistant is that I can't assign a static IP.
I am currently "off, off grid" on a mountain top in NE Arizona. Currently running led acid and wanting more power. The Lifepo4 304 amp batteries have caught my ey3 but this bms thing has gotten me stumped. At 70 i have been an electronics engineer and computer tech but im tired of continuously fussing with stuff, not to mention my companion is unbelievably non-tech. Install and setup I'll do but really looking for "plug and play" equipment. Any thoughts. Love your channel, hot Australia, 6 months off Arizona deserts, just no wallabies 😂
Hey Andy, I love your channel. I recently purchased a Peter board based on your recommendation. I was getting ready to order a JK BMS for my DIY Battery LiFePO4. Then I saw your video about all the problems people are having with the newer BMSs losing their settings. My battery is going on my boat and it's highly possible that the BMS can be turned off on a regular basis. Given what you've learned about the new JK BMS. What JK BMS would you recommend? I'm setting up an eight cell 24 volt system. With 280 amp hour batteries. I'm really excited to use the Peter board. As soon as I saw that it interfaced with home assistant. I was so excited 🙂 now I can control my boat battery through home assistance when it's sitting in my driveway!
You have to differentiate between the old JK (BD series) and new JK BMS (PB series). Only the old style BMS will work with the Peter board. And only the new style BMS had the software issues which are now fixed with the latest FW updates. Both BMS are here on my website: off-grid-garage.com/battery-management-systems-bms/
Thx Andy, FYI I have 4 - JK-PB2A16S-15P... Hardware V15.XA, Firmware V15.05. After changing settings/password in the 1st one, and then leaving it for 4 or five hours... come back to find I can no longer "verify password". So I changed it with the 2nd new one, and exactly the same thing has happened... I think they may be returned now? Cheers! Edit- spent 3hrs+ with the seller trying to resolve this with special authorization codes, sketchy instructions....... what a mess!
I had the same issue with my new V15.XA BMS. I contacted the HankzorBMS Store via Aliexpress and they could help me with an individual master password, dependend on the serial number of the BMS.
Hi Andy, big thank you for all those videos and information, it's helpful. For you what is the best BMS ? is a JK or Seplos 3.0 ? i plan to add a second battery (i know i need to change the actual BMS from Basen that is not good at all). thank you
I would recommend the JK BMS, either older BD series or the new PB series. Both are great. The Seplos would not be my choice for a BMS for several reasons.
Can you connect a Peter board to one of these? The ports are different than the older models and the manuals are shit to try an understand what is what Tia
Andy, can we use RS485 to USB Adapter Converter referenced on your web-site to connect A, B, GRND, to the pin 7, 8, 6 respectively of RJ45 connector to update firmware of the BMS?
😂😂😂😂 jk company should hire your Google drive!!! Or ask you to give them some courses about how to sort and order the data. So glad to see your videos i'm learning a lot!!!!!
I needed to switch uart1 to jk, which required dipswitch to 0, then back to 1 for the upgrade. Is this not needed anymore? It seems you are now connecting to the rs4852 port, not the far left 'inverter' rs4851 port. I must have missed the part where it was discovered that connecting to the inverter port wasn't needed anymore. For those that are having trouble still, make sure your rs485 adapter has the proper pinout.
My very first of their BMS had this issue as well and I had to use the inverter RS485 port. Now, this seems to be fixed and I can just use the normal RS485-1 or 2 port with DIP sitting on 1000.
@@OffGridGarageAustralia I have been on this all day, I have tried all 4 ports and loads of prolific drivers, Dip switches on, on off off off and off off off off, some drivers the software seems to go further than others, I am going to download the windows drivers for my version which is windows 10 2H22, I have found this on microsofts site, listed as windows 11 2H22, I will keep you updated, could you tell us what version of windows 10 and the driver number of your usb-serial driver is please Andy? many thanks for help, Dean Rowles
In the video description and on my website now. Tested all USB to RS485 adapters successfully with the JK Inverter BMS. off-grid-garage.com/bms-communication/
Hi Andy, Looking at your inverter bms movies about jk, I get a mixed bag feeling: cheap, decent balance current, but with different bugs and a non communicating manufacturer. My questions about the newest inverter bmsses: - are the battery settings now stored in flash (if even present on the boards)? - is it true only the ress versions can be connected with five of them to one cerbo without pushing the others siblings out of the nest? It would have been nice if the other active compacter black models that can handle up to 20 cells were compatible in a group of five with the cerbo. can they? Being not so shure if they can, I'll stick to my excisting an regretfully not so accurate and pricy 123smartbms that cost four times the price of the JK ones and need an external current measurement and cirquit breaker too....
Andy you’re the best! I have been trying to get mine updated with no success. I have the JK_PB1A16S10P with V14.04. I have contacted JK and they sent me a PC Monitor V 2.7 but yet still NOTHING. I have tried different cables and computers still no connection. The V 2.7 seems to make some type of connection but will NOT display any information, thus not allowing me to update it. Should I just order another one and hope for the best or do you have any Ideas. I did try your steps in the other video and still nothing.
Did you check if there is a bidirectional RS485-communication? In the PC software there is a green terminal button ">_" which opens a sending and receiving window. When connecting there should be a longer answer - stream. If not maybe the adapter is not working. I also had an adapter with a chipset which did not work... Or you didn't chose the right COM-Port...
Or the RS485 pins A & B are not correctly assigned to RJ45 - pins 1 & 2. I also hat to custimze the RJ45 assignments. I have 2 RS485 adapters with FTDI-chipset. Both are working.
if I open the green terminal button I am seeing long streams of information scrolling down BOTH send and receive columns, just no information on the display. The send side has like one information string while the receive side has like 5 or more line of information streaming????? @@StefanEnglert-ud1pq
Good work as usual...but weil du es gerade ansprichst, is there an option to update the old gen jkbms? Two friends habe some trouble or weird behavior with them.
Very frustrating trying to connect BMS to win 10 PC. Although it shows as connected on the PC Monitor v2.7 software when I run terminal window I can see packets being sent to the BMS but nothing is coming back. The same USB RS485 adapter works fine on JK 100A BMS but now i've upgraded to a 200A version it won't connect to PC. A lot of posters are saying some JK BMS's work fine and many don't so perhaps it depends on what firmware you have. Unfortunately without being able to connect it is not possible to change the firmware... very frustrating.
i have a bit of a conundrum.. My two inverters read battery voltage as 53.7v, my three JK BMS read 52.80 to 53.12. And my 3 volt meters read from 52.4 to 54.0... How do I find the accurate voltage so my BMS's protect my LifePo4 cells correctly?
UPDATE: The Amp value showing on Cerbo only updates when battery “DETECT”is performed. Is there a forum where someone may be able to assist me? I have just got my Victron/Gobel/JK system running and updated Fireware 15.32 to all 3 bms. Now only amps from B0 & B1 being sent to Cerbo. Any clues on why B2 is not being added? Thank you
I've updated 3 ver 14's and 2 ver 15's a few days ago... still waiting for batteries to arrive. Still trying to figure out a way to attach the 4.3" screen to my battery boxes, have to got yours yet to try out your 3d printer ?
Hi andy, been trying to get my JK-PB……. to connect to my laptop all evening, downloads latest monitor 2.5.0, tried 2 ethernet to usb’s and 2 ethernet cables, but allas, even tried different plugs on my data board and diferent dip switches, bms just will not connect. I have the original sw on it so cant connect to my 16S Lifepo4 battery, connects to my phone via app, any ideas?
Hey Andy, big thanks for your work. Today i installed the version v15.17 on my JK BMSs. Di you have any changelogs this time? You know a way to get out every single cell voltage out of the BMS, in best chase via CAN? In my Case the BMS ist connected via CAN-Hat on the Pi to the Venus OS (latest Version). Is it possible to you to talk to JK to implement that the cell voltages transfer via CAN to the Venus OS? Best regards from Hamburg, Germany. Thomas
I have two 100ah jk bms. One connects to pc software (will show voltage and current on pc 2.8.0 but all options are grayed out and firmware update stalls at 0%. The other one says connected but shows no info and gives no options
Hello Andy, I love your videos and they are very informative. I have a 12v system and 2 battery packs, both with the JK BMS B1A8S20P and is it also possible to connect this to a PC and carry out a firmware update? I have contacted Jikong BMS several times in different ways by email but unfortunately I have not received a response until today. I can't really find any clear or even useful information on the internet. I have the right RS485 adapter with USB converter and it also connected to Venus os with a Raspberry Pi4 and it works. When I connect this to my computer and press the correct COM port, it connects but with no information or data in the JK-BMS-MONITOR. And I have another question, I have a third JK BMS B1A8S20P but I forgot the password. Is there also a way to reset this BMS so that it can be used again and the settings can be changed again? Kind regards from Germany
Thanks Andy for all your hard work in these videos. I enjoy them all, and your humor as well :). I just ordered the JK pb1a16s10p, and fingers crossed. The JK site and support documentation/link/manuals are very hard to find. They have work to do on this! Question, to upgrade the firmware on this unit, do I need the RS485 to USB adaptor, or can I simply use the network cable from the RS485 port on the communication board, and plug right into my network port on the laptop? ( Will the MK3 to USB adaptor work from Victron?) Probably wrong communication protocol with the MK3 adaptor , but just trying to keep it simple... Ideally JK should just have BT firmware downloads we can do right from our phones vs having to connect cables, laptops etc...
I have a 15kw lifepo4 battery pack which I have fitted to a Reva Gwiz electric car, I have a spare Outback VFX 3048e inverter/charger I was thinking of connecting it to the pack and feeding in 230vac to the hot in. This should actually act as a 45amp DC charger plugged in to a normal supply? Or plugged into my off-grid solar supply? What have I missed?
@@EllisBergman Uh, sorry, that is very very specific and I cannot really help you there as I don't know all details and regulations in your location. Someone would need a lot more information, see drawings and calculations to fully understand your setup and design. It's best to contact a local electrician who has knowledge of all requirements.
Ok, thanks for your time, Outback won't help, there are no restrictions here as it's all my own supply and there is no one who seems to understand it or want to give advice. I thought it was a straight forward question. Nevermind, your jk BMS videos are very helpful. 👍 If you have any thoughts on the idea please let me know. Regards Ellis
Hallo Andy, Had some trouble today to update a harwareversion 15 BMS from 15.05 to 15.17 using the newest PC Software. Had to uninstall and install an older version. Maybe helpful for others, if you can provide also older PC software version on your drive?
Hi, thanks for the video! If I turn on the first dip switch, there is no connection but if I turn off the first dip switch, the connection is there and I see information from the BMS, but all menu items except "Paralle" are not active. What am I doing wrong?
Perfectly fine. If you have only one BMS, you set all switches to 0000. Only if you parallel the BMS you start with 1000, 2nd BMS with 0100, 3rd BMS with 1100 and so on...
@@OffGridGarageAustralia I have the same problem as described here at "diysolarforum" tread "JK PB2A16S-20P No Communication". I suspect that the problem is in the adapter. I use Industrial USB To RS485 422 Converter with CH340G Chip. Version of the PC monitoring software 2.8. Frimware BMS I have two versions 15.27 and 15.30.
The problem was in the adapter(Industrial USB To RS485 422 Converter with CH340G Chip) , maybe it is not compatible with my version of BMS or it is defective. I have ordered two other types of adapters that Andy recommends (Waveshare Industrial USB To RS485 Converter with FT232RL Chip and RS485 to USB Adapter Converter) and they both work great.
Does that PC Software save the BMS profiles you set to a file, so that you can upload the settings profile to multiple BMS' ? Just thinking of folks with several packs in a bank.
Hi Andy are you still running seplos BMS ? I see that there has been new firmware releases today for V3 any chance you having a look at it for us Seplos owners
Hi guys ... i have a growatt spf5000es And a new jk inverter bms 200a... everytime i select Li battery type takes me to setting 36 protocol L00 ... what should be settings tried the L40 which someone suggested but inverter shuts down after a few seconds
Hello sunny Australia. I’m in need of some help. I have 5 14kw hour lithium iron packs that I want paralleled. I have 5 relay based 300amp Bms by jbd. Do you by chance know a good way for them to connect to each other? I have all voltages in the packs sitting at 52v.
As long as every pack has its own BMS, you can just parall them. I would suggest to a DC circuit breaker to each of the parallel banks as well. Fully charge the whole battery and they will balance against each other once you hit ~54V. Some packs may stop while others will still charge. Totally normal.
Quick question... Do these BMSes have a delayed inverter start to allow pre-charging of the battery inverters' capacitors? My REC BMS has a special circuit for this with a relay etc, but doesn't allow you to parallel BMSes without buying an expensive Master BMS (which only allows three slave BMSes, limiting the overall capacity). So if I can get a decent alternative that can parallel using the Pylontech/SMA protocol with capacitor pre-charging I'd be very happy to try them instead.
Power up is not something I do very often, so I have a large resistor that I can switch into circuit for 2 mins before turning on the main battery breaker. It's inverter designers that should implement this rather than BMS manufacturers..
@@dougle03 I agree that it should be part of the inverter, but I won't be throwing out my two Sunny Islands just because of that! Yeah, I've bought a couple of resistors too. The REC BMS's delay contraption doesn't seem to wait long enough to sufficiently pre-charge the two SIs anyway, so I guess it's a bit moot as I'd need to use the resistor anyway.
Andy is the JK inverter BMS working smoothly/ reliably when paralleled with an additional JK inverter BMS? Haven’t heard anything since your parallel battery vid a while back. Thank you.
Can you force update to an older firmware version? The button seems available when selecting an older firmware. But it also seems to be available for a different device firmware, which would be scary. Could you reset to "factory settings", i.e. the original firmware version and then upgrade to an older firmware version maybe?
I don't think so. Force Updating needs a code form JK which is only valid for 1h or so... There is no reset to factory default button anywhere, so not possible.
Hello Andy I've been following your channel for a long time and was very impressed with the introduction of the JK-BMS. Of course, I quickly bought one in the hope that it would work with my system, especially since the 2A balancer completely convinced me. I don't know if I understood correctly that you were or are involved in the development, but in any case I'm eagerly waiting for a firmware update that supports my system because it works perfectly with Seplos-BMS. It's about the interaction of JK_PB2A16S20P (vers. 15.17) with an SMA battery inverter_Sunny Island At Seplos the protocol is called: SMA_CAN or Sofar_Can protocol Do you perhaps have any influence on the developers so that this is implemented in a next FW update? Thanks Keep it up, you keep inspiring me Thomas
In the video description and on my website now. Tested all USB to RS485 adapters successfully with the JK Inverter BMS. off-grid-garage.com/bms-communication/
Hallo Andy, ich habe ein Problem mit der älteren Generation (JK-B2A24S) und frage mich ob dich das vielleicht auch interessiert. Kurz gesagt wenn man discharge auf off hat, und charge auf on kann man nicht mehr laden. Ein Kollege und ich haben insgesamt 5 JK-BMS (2 verschiedenen Hardware-Versionen) und möchten mit einem Riden RD6024 16 Zellen laden. Da wo wir das festgestellt haben möchten wir jetzt gern rausfinden ob es ein Hardwarefehler ist oder ob das durch die Software auftritt und somit durch eine Firmware zu beheben ist. Dein Video ist dazu fast passend, aber halt leider nicht für die letzte Generation, wir finden auch kaum etwas, bis wenig. Meine erste Frage ist eigentlich, kann ich die alte Generation überhaupt selber updaten? P.S. sorry das ich alles in Deutsch geschrieben hab, ist das ok? ansonsten muss ich mir mehr Zeit nehmen und es übersetzen (lassen ). Liebe Grüße
I see alot of comments about cables. Andy could you do a video on JK to computer cable to update fireware, JK to cerbo ( communcation) and JK to raspberry pi Communcation.
OK, I'' add this to my list of video but I don't know where the confusion comes from. For the RS485 coms, you only need a nromal LAN cable For the Cerbo/inverter CAN coms, you need to make your own or use Victron Type A cable. That's pretty much it...
@OffGridGarageAustralia I always look forward to your videos Andy. Forget the informative content, the entertainment alone makes them worth watching. I do have a question, I have just installed a new PB2A16S20P. The FIREware is V15.12, Is it worth upgrading to the V15.24? I haven't seen V15.12 anywhere to download (IF V15.24 has more bugs) to downgrade.
Hy Andy and Community... i have a great problem with the firmware update. I have 2 2A150A HWV15 with the 15.10 firmware. Everytime i start the update my bms shuts off and nothing happen.... Have anyone suggestions for me? I`ve tryed different computers....different cables.....3 versions of the PC Software... always the same I hope there is a solution for that
Your PV panels are parallel as i followed on a german live stream. Do you use diodes to avoid back current to shadowed modules? Maybe you want to make a video about that ?
No diodes needed. They all have the correct size circuit breakers in case one string is faulty. I have only two panels in series and 18 in parallel with 4 MPPTs.
I have two JK-PB2A16S15P with 15.05 and trying to update to 15.10 but when I click start updating it just stays at zero percent bms will beep after a few minutes and reset. Speaking to support they think I need a temporary code to update. Hopefully, I will be home when they send me the code.
How did you contact support? I sent an email two days ago, but haven't had a response yet. Curious what the solution is for you. Problem I have seems to have common ground with your problem.
@@alexveldman2465 I wrote them a message through Aliexpress. So far they have been responding within 24 hours. The last update I got from them is I need an authorization password and to contact them again in a few days.
Was it ever on their website? Have a look in my Google Drive. I still have the .APK file there for Android: off-grid-garage.com/battery-management-systems-bms/
Hi Andy, and all the other readers, I recently bought and received the JK_PB1A16S10P three times. According to the blue tooth app on my android phone, it appears to be a hardware version: V15. XA with Software version: V15.06 (all three) I want to update this to V15.10. I got this version from both the JK site and the Off grid garage Drive site. The dip switch is set to 1000 In both cases I keep the warning: Device Identify is not the same to connected device! (In all three) What am I doing wrong? Or is there another bug in version V15.06? Does anyone know what to do? PS: I hope this comment doesn't end up in the list multiple times. But I don't see the reaction itself in the list anymore.
Would like to report that the firmware V15. 17 and 15.32 interfere with the connection of the inverter Deye 16 SF and meter Eastron. I was forced to dowgrade the firmware to 15.11 to restore the communication between the inverter and meter.
Hi i just got my usb to rs485 converter it looks the same as your one. I can not get it to connect to the jk pc app. Is there any trick to install the usb. I have set everything just the same as the video.😢cheers🍻
@@GarryL277 That should perfectly work. I've tested now a lot of adapters (will be in the next video) and they all worked under W10 and the newest PC software 2.5 from JK.
Dankeschön! Interesting, that the update software as well as the Feuerwehr on your google drive have a higher version than the one found on the official webpage. I guess they use you as beta-tester.
I updated the bms to version v15.23, after the update the display stopped working, everything else works, is it a software error? anyone else had this??
Andy... You are our last hope... Low temperature trigger. Please help with communication to JK team. For some reason they take out from firmware (15.10 here) "low temperature" trigger (for dry contact). Is was one of the major function for me and for some other people here. Could you be so kind and try to convince them to get it beck? Thanks!
@@OffGridGarageAustralia it looks like. I checked it so many times. And suspicious is that Aliexpres official store write me that there are some issues with heating so that cancel heating function. My thoughts are that they for unknown reasons delete either low temperature trigger. And I can confirm that heating function is missing in software but all 5 tem sensor are working just fine. Maybe they are right that heating and use 2-3A trough 4 or 5 thin cables isn't the best idea but... Please return triggers... No response from them email, WhatsApp, web form). Could you please be so kind and help? I can send you screenshots. Thanks
@@OffGridGarageAustralia @OffGridGarageAustralia both are missing... But heating function is not so important. If there will be low temperature trigger for dry contact I could use it easily.
@@mateuszmazur1482 It is Chinese New Year at the moment, they won't reply until end of February. Most companies have closed or are on skeleton staff...
With such an amateurish company doing many things with so little attention to detail, do you really have trust and confidence in either the hardware or firmware design or implementation?
No, I don't but other solutions are not better. All comes from China and is not of great quality. And I consider the BMS as a safety device... Maybe we should stick with Seplos as they are in the market for a lot longer and have no major issues...
JK BMS PB2A16S20P met Hardware ve: V15.XA firmware: V15.17 een firmware V15.37 te hebben uitgevoerd, is na de ip-adresen hardware ver. V15.XA verandert in V15.A Is deze verandering normaal? Of heb ik een verkeerde firmware update uitgevoerd? Kan iemand mij hier duidelijkheid overgeven? Ben benieuwd of ik nu iets fout heb gedaan of niet, BVD Groetjes Jurgen
Anyone that has manage to update the firmware with something else than a RS-485 adapter? Seen some people having trouble with finding the correct RS-485 adapter, and I was wondering if there was another way to update the firmware using for example RS-232 or TTL? And if needed connected to another location on the BMS? Maybe on the ARM32 pinout?
Its funny you should mention this, as its not the only problem I am having, my laptop running win10 has the prolific serial to usb chip, if you look in device manager MS says that the firmware has been stopped since 2012, only 12 years ago, so I am trying older firmware to try and get it connecting
And that makes it more interesting, since I have seen some people comment that they have been able to use an RS232 adapter on the RS485 port succesfully. And more people comment that the RS485 adapter they used did not work. Saw one comment where a store selling the JK inverter BMS recommended to only use one specific RS485 adapter (which they did't directly sell either).
Still no go on connecting to PC as per video, I am using a Bewinner Industrial Grade USB to RS485/422 from Amazon, I have tried a Cable Matters USB to Serial Adapter Cable 0.9m USB to RS232, USB to DB9 using the RS-232 port with no luck, I also used a RS485 serial USB toggle without success, I have now ordered from Ali what is supposed to be the right cable, I don't think all USB to RS-485 RJ45 are wired the same, be so much easier to do it with a phone APP, so at this stage I am waiting for delivery from Aliexpress, Been a real pain in the arse
I have spent 2 nights trying to get this fixed, I too am using the usb to RS485 from amazon, I tried win7 serial drivers and they didnt work for me, I have now loaded a prolific driver from 2008, still not perfect tho, so no fix yet
Some older prolific drivers come up with an error under later windows OS, I have found this being the case with my Zhetech battery tester, but is easy to work around with drivers under Device Manager, I think the problem lies with hardware on the termination of the RJ45, until the new adapter comes from Aliexpress I can't be 100%, but I think it is the plug end.
what will happen by Force Updaten when try to downgrade will it brick it self just curious? and nice joke with fireware and Feuerwehr as i heard fireware i had thinked of a Feuerwehr
Here's a partial conversation thread from my interaction with a sales rep. Sales Rep-1.Disconnect the host. 2.Select Force update from PC software. (Need authorization code, I will provide you) 3.Press the activation button without releasing it. 4.Press the reset button and release it quickly. You will see the PC software and start the firmware update. 5.If this fails, repeat the preceding steps... Me-When you say disconnect the host, do you mean pull the wire out between BMS & PC, or push the disconnect button in the App? Sales Rep-First button...Do you follow this step? (she sent me a PDF to upgrade fireware). Me-The BMS has the latest firmware installed (see my earlier picture above), I just want to be able to change my settings... this should not be so difficult!. Sales Rep-We do not recommend that you modify the parameters yourself. Me-I have to modify them, they come with the wrong settings out of the box. Sales Rep-Yes, you need to use rj45 wiring to brush the computer. Me-Brush the computer? what does that mean?
@@OffGridGarageAustralia ze thanks, i solve it just day before the video, the hard think was get the code from JK it was impossible.. but they seend it to me and now all work fine. Thanks
1.Fixed a bug where parameters were lost after BMS restart. The bug is caused by a logical error in the parameter entered by the user. 2.Change the default configuration parameters to LPF to improve security. 2.Optimized JKBMS Modbus protocol, added RCV RFV register support. The protocol must use the PC software version V2.5.0。 3.Fixed the Bug that the hardware version may be incorrect in the device information. 4.Add battery low temperature alarm to dry triggers. -@2024-01-09 by JKBMS
-V15.09 Upgrade logs 1.Fix a bug, parameters (RFV Time) Storage failure. 2.Change the default configuration parameters to LTO to improve security.
-@2024-01-12 by JKBMS -V15.10 Upgrade logs 1. Button shutdown logic detection and optimization. 2. Bluetooth communication optimization.
-@2024-01-17 by JKBMS AND for 14 -V14.20 Upgrade logs 1. Button shutdown logic detection and optimization. 2. Bluetooth communication optimization.
Hello Andy, I have been following your Off-grid-garage channel for a long time. I have also received a lot of good information. After the video about Yixiang DIY battery case, I also ordered 3 of them. They work, although I still have to exchange my Cerbo-S for a Cerbo GX MK2 so that I can integrate and display the JK BMS in the Cerbo GX as you described. So far so good. Now I have seen your video about the firmware update of the JK-BP2A16S20P and wanted to update it via my PC and the JK software. I had the firmware V15.30 and also wanted to upgrade to V15.38. I got this version from your homepage. The update started and stopped at 38%. It didn't go any further. After about 2 hours at 38%, I canceled the update. After several resets, only the display appears and I no longer have access to the BMS. Neither via PC nor via the Bluetooth app from JK.
My question: Do you have a tip for me on how I can get my JK BMS back? So how I can get access to the BMS again and update the firmware. I have 3 other Yixiang cases with JK BMS that also need a firmware update. But the firmware V15.33 is already available here.
Thank you for your help - Greetings from good old Germany - Martin
Many thanks mr. solar. Very helpful, time to update for v. 14.20. I guess it will erase all the settings and you will need to re-type them as well. I was kind of crossfingering that you would have shown your complete settings as well as at least myself have bit troubles to catch somewhat "correct" values, even knowing that each solar system and environment may be different. It's bit of confusing sometimes when on the videos have screen recordings from app showing different setting values. Definitely NOT complaining, maybe just add snapshots to your web page, it would be crazy help for us beginners.
But huge thanks for everything you do for the community. Best in YT.
Andy you're so hilarious, I really hope JK is watching this, priceless
Thank you very much. Yes, they are watching😄
Hello Andy, thanks for the great videos. A “USB to RS485 adapter serial converter interface for Raspberry Pi” can also be used to connect to the BMS. It's cheap. You just have to cut open a LAN cable and connect the wires correctly.
Can you be more precise about the wiring ?
@@nicodupont3962 You can look in the specification of the bms: Pin 1,8 = RS485- B1; Pin 2,7 = RS485-A1
I don't need to change the pins with a RS485 to USB adapter. I just use a normal LAN cable.
@@OffGridGarageAustralia But you need a Adapter LAN - USB, i don`t have this, but the serial adapter - no extra pay
Andy and community: thank to you for your great support
A couple of thoughts...
If the BMS only needs battery minus (-) and battery plus (+) in order to flash, this makes it easy to do on the bench with a bench power supply.
The hardware difference may be something as simple as supply chain issues requiring a second source supplier for a component that requires a slight change in firmware. My company has encountered this the past few years with flash memory, with PMIC, and some other pieces parts. Most of those were footprint compatible, but had slight differences necesary in the firmware to function correctly (or at all in some cases).
Thanks for documenting this. WHAT A PAIN IT IS!
Yes, good points!
Have you seen that there is a "Force Updating" button on the bottom, when you select an older fimrware file? :)
I think the button was too small...
Maybe you use The Force when it is bricked?
That requires a pass from Yoda.
Exactly what i wanted to ask. Could you downgrade the firmware version by force uploading?
Nope, that's not what the button is for. It's in the next video...
if I saw you video before...I bricked one V15 BMS while in Master-Slave config, but thanks to you I managed to unbrick it :). Keep up the good work Andy!
Brilliant Andy. JK is a great product but OMG the technical support is Desperate. I ordered and installed the Peter Boards thanks to your help.
They are mighty
Loads of data and in HA too. Of ourse with all these things there are unintended consequences . I have 4 battery banks almost exactly like yours . I have 4 JK BMS (200 A ) like your old ones , 2 No new ones with the 100% SOC setting,( Ver. 11.XA_S11.41). 1 no. with Ver 11.XW_S11.24H and 1 No with Ver 10.XW_S10.08.
I performed a Top Bal last night and the 2 No New ones Ver. 11.XA_S11.41 Performed as expected and set the SOC to be 100%
The 1 No with Ver 10.XW_S10.08. reported a SOC of 85%
THe 1 No with Ver. 11.XA_S11.41 is report only some data and SOc is roughty correct but has moved 2% in a few hours .
I watched the fireware update on the new jk bms .
Question to the community, is can my older onles be updated to Software Vertion S11.41?
I think I know the answer but one can always hope!
As always your ahead of the ball Andy. Cheers!
Thank you.
Danke!
Thank you!
Hello Andy, thank you for the remarkable explanations.
My first JK-BMS has arrived and I am now waiting behind my new EVE 320Ah batteries. I can't wait to explore with you with your clear videos. I appreciate your effort. regards
Jean-Pierre from small Belgium
Good Morning Andy, would the Victron MK3 to USB cable work. Victron also sell an USB to RS485 interface cable that would need an RJ45 connector plug wired to it. Given I see so many issues surrounding comms for these BMS-inverter/computer connections, have you considered if terminating with the 120 Ohm resistor would reduce comms issues by better matchong the standard Cat5/6 ethernet/LAN cable as per RS485 recommendations?
That will definitely not work. The MK3 has specific software running and will only talk to Multi or Quattro.
All communication is terminated correctly both ends. At least I hope so...
REPOST DUE TO SPELLING!!
“Brilliant Andy. JK is a great product but OMG the technical support is Desperate.
I ordered and installed the Peter Boards thanks to your help.
They are mighty.
Loads of data and in HA too.but with all these things ,there are unintended consequences .
I have 4 battery banks almost exactly like yours .
I have 4 JK BMS (200 A ) like your old ones , 2 No new ones with the 100% SOC setting,( Ver. 11.XA_S11.41). 1 no. with Ver 11.XW_S11.24H and 1 No with Ver 10.XW_S10.08. I performed a Top Bal last night and the 2 No New ones Ver. 11.XA_S11.41 Performed as expected and set the SOC to be 100% The 1 No with Ver 10.XW_S10.08. reported a SOC of 85% The 1 No with Ver. 11.XA_S11.41 is reporting only some data and SOC is roughly correct but has moved 2% in a few hours . I watched the firmware update on the new jk bms .
Question to the community, is can my older ones be updated to Software Version S11.41?
I think I know the answer, but one can always hope!”
The FW on the older BMS cannot be updated. Even if technically possible (maybe?) who do you get a new fw from???
In one of the next videos, I'll show how to reset older BMS to 100% without the need of going OVP all the time.
Peter boards are crazy good. I love them! Thanks for sharing.
Nice sunny weather we go to work over ice skate today.
Hahaha, nice!
As usual Andy, you are a real blessing to the DIY community with these videos. Would be great if we knew what version 20 latest firmware changes include. By any chance do you know if these new JK BMSes will work with Solar Assistant for remote battery control and monitoring?
I also use Solar Assistant, which would be wonderful. The older version (JK-B2A24S-20P) works, unfortunately without information about the individual cells. I asked, it should be coming soon. What also annoys me in solar assistant is that I can't assign a static IP.
I am currently "off, off grid" on a mountain top in NE Arizona. Currently running led acid and wanting more power. The Lifepo4 304 amp batteries have caught my ey3 but this bms thing has gotten me stumped. At 70 i have been an electronics engineer and computer tech but im tired of continuously fussing with stuff, not to mention my companion is unbelievably non-tech. Install and setup I'll do but really looking for "plug and play" equipment. Any thoughts.
Love your channel, hot Australia, 6 months off Arizona deserts, just no wallabies 😂
Hey Andy, I love your channel. I recently purchased a Peter board based on your recommendation. I was getting ready to order a JK BMS for my DIY Battery LiFePO4. Then I saw your video about all the problems people are having with the newer BMSs losing their settings. My battery is going on my boat and it's highly possible that the BMS can be turned off on a regular basis. Given what you've learned about the new JK BMS. What JK BMS would you recommend? I'm setting up an eight cell 24 volt system. With 280 amp hour batteries. I'm really excited to use the Peter board. As soon as I saw that it interfaced with home assistant. I was so excited 🙂 now I can control my boat battery through home assistance when it's sitting in my driveway!
You have to differentiate between the old JK (BD series) and new JK BMS (PB series). Only the old style BMS will work with the Peter board. And only the new style BMS had the software issues which are now fixed with the latest FW updates.
Both BMS are here on my website: off-grid-garage.com/battery-management-systems-bms/
Thx Andy, FYI I have 4 - JK-PB2A16S-15P... Hardware V15.XA, Firmware V15.05. After changing settings/password in the 1st one, and then leaving it for 4 or five hours... come back to find I can no longer "verify password". So I changed it with the 2nd new one, and exactly the same thing has happened... I think they may be returned now? Cheers! Edit- spent 3hrs+ with the seller trying to resolve this with special authorization codes, sketchy instructions....... what a mess!
I had the same issue with my new V15.XA BMS. I contacted the HankzorBMS Store via Aliexpress and they could help me with an individual master password, dependend on the serial number of the BMS.
Oh dear... why is there even a v15.XA hardware? And again no communication from JK...
Perfect Timing jk employee master tester Andy! I wanted to Raise a request for the fw update. Great Timing. Many thanks. 🙏🙏🙏🙏🙏🙏🙏👍✌
No problem 👍
Interesting. Is the upgrade procedure similar for a JK-B2A8S20P?
Thanks for your work.
Hi Andy, big thank you for all those videos and information, it's helpful. For you what is the best BMS ? is a JK or Seplos 3.0 ? i plan to add a second battery (i know i need to change the actual BMS from Basen that is not good at all). thank you
@Off-grid Garage, any help about my question ? thank you :)
I would recommend the JK BMS, either older BD series or the new PB series. Both are great. The Seplos would not be my choice for a BMS for several reasons.
@@OffGridGarageAustralia Thank you a lot for your feedback and all your tests and videos about solar systems :)
Can you connect a Peter board to one of these?
The ports are different than the older models and the manuals are shit to try an understand what is what Tia
Peter is developing a new board right now and this can connect to Seplos, Pace and the new JK as well...
Andy, can we use RS485 to USB Adapter Converter referenced on your web-site to connect A, B, GRND, to the pin 7, 8, 6 respectively of RJ45 connector to update firmware of the BMS?
It would be nice! I will check it at weekend. Have anybody else practice this?
Your pin out is correct.. i had a rs485 adaptor wired and working with a different device and it did not work until i changed A --> 8 , B --> 7
waveshark adapter working with standard network cable using A->7 (brown/white) B->8 (brown) GND->6 (green)
Hmm I’ve just done this and it was pin 3 and 6
I use the adapter and a normal LAN cable. The other cable is for CAN coms only!
😂😂😂😂 jk company should hire your Google drive!!! Or ask you to give them some courses about how to sort and order the data.
So glad to see your videos i'm learning a lot!!!!!
Hehe, yeah, it's a bit messy what they provide on their website...
I needed to switch uart1 to jk, which required dipswitch to 0, then back to 1 for the upgrade. Is this not needed anymore? It seems you are now connecting to the rs4852 port, not the far left 'inverter' rs4851 port. I must have missed the part where it was discovered that connecting to the inverter port wasn't needed anymore. For those that are having trouble still, make sure your rs485 adapter has the proper pinout.
do you know the pinouts, I am having loads of trouble getting my jk bms to connect to my laptop, thanks Dean
It's pins 1 and 8 OR pins 2 and 7 that is the rs485 on the jk. What 485 adapter are you using? @@deanrowles3665
My very first of their BMS had this issue as well and I had to use the inverter RS485 port. Now, this seems to be fixed and I can just use the normal RS485-1 or 2 port with DIP sitting on 1000.
@@OffGridGarageAustralia I have been on this all day, I have tried all 4 ports and loads of prolific drivers, Dip switches on, on off off off and off off off off, some drivers the software seems to go further than others, I am going to download the windows drivers for my version which is windows 10 2H22, I have found this on microsofts site, listed as windows 11 2H22, I will keep you updated, could you tell us what version of windows 10 and the driver number of your usb-serial driver is please Andy?
many thanks for help,
Dean Rowles
Does your rs485 adapter send +- to the right pins? Mine was not right as it came in the box. @@deanrowles3665
Would it be possible to update the "FIREWARE" on a non-inverter JK BMS too?
No, not possible.
Do you have a link for the rs485 to usb interface?
Yes i am not able to find this link and Andy mentioned it was in the details
I don't find it neither.
ai asked Andy about this a while ago, he said he didnt have a link because one of his suppliers sent it to him.
In the video description and on my website now. Tested all USB to RS485 adapters successfully with the JK Inverter BMS. off-grid-garage.com/bms-communication/
Hi Andy,
Looking at your inverter bms movies about jk, I get a mixed bag feeling:
cheap, decent balance current, but with different bugs and a non communicating manufacturer.
My questions about the newest inverter bmsses:
- are the battery settings now stored in flash (if even present on the boards)?
- is it true only the ress versions can be connected with five of them to one cerbo without pushing the others siblings out of the nest?
It would have been nice if the other active compacter black models that can handle up to
20 cells were compatible in a group of five with the cerbo. can they?
Being not so shure if they can, I'll stick to my excisting an regretfully not so accurate and pricy 123smartbms that cost four times the price of the JK ones and need an external current measurement and cirquit breaker too....
Andy you’re the best! I have been trying to get mine updated with no success. I have the JK_PB1A16S10P with V14.04. I have contacted JK and they sent me a PC Monitor V 2.7 but yet still NOTHING. I have tried different cables and computers still no connection. The V 2.7 seems to make some type of connection but will NOT display any information, thus not allowing me to update it.
Should I just order another one and hope for the best or do you have any Ideas. I did try your steps in the other video and still nothing.
Have you tried rs232 ? Jumper correct?
I have not used the RS232, I will have to try that next. Thanks@@AKu-vw9eb
Did you check if there is a bidirectional RS485-communication? In the PC software there is a green terminal button ">_" which opens a sending and receiving window. When connecting there should be a longer answer - stream. If not maybe the adapter is not working. I also had an adapter with a chipset which did not work... Or you didn't chose the right COM-Port...
Or the RS485 pins A & B are not correctly assigned to RJ45 - pins 1 & 2. I also hat to custimze the RJ45 assignments. I have 2 RS485 adapters with FTDI-chipset. Both are working.
if I open the green terminal button I am seeing long streams of information scrolling down BOTH send and receive columns, just no information on the display.
The send side has like one information string while the receive side has like 5 or more line of information streaming????? @@StefanEnglert-ud1pq
where to get the firmware? its no longer on their site
Good work as usual...but weil du es gerade ansprichst, is there an option to update the old gen jkbms? Two friends habe some trouble or weird behavior with them.
Nope the old one cannot be updated. They need to contact JK to troubleshoot...
Very frustrating trying to connect BMS to win 10 PC. Although it shows as connected on the PC Monitor v2.7 software when I run terminal window I can see packets being sent to the BMS but nothing is coming back. The same USB RS485 adapter works fine on JK 100A BMS but now i've upgraded to a 200A version it won't connect to PC. A lot of posters are saying some JK BMS's work fine and many don't so perhaps it depends on what firmware you have. Unfortunately without being able to connect it is not possible to change the firmware... very frustrating.
i have a bit of a conundrum.. My two inverters read battery voltage as 53.7v, my three JK BMS read 52.80 to 53.12. And my 3 volt meters read from 52.4 to 54.0... How do I find the accurate voltage so my BMS's protect my LifePo4 cells correctly?
You can get a precision voltage reference board for
Hi Andy my software always crashes when i try to connect. Any Idea why?
UPDATE: The Amp value showing on Cerbo only updates when battery “DETECT”is performed. Is there a forum where someone may be able to assist me?
I have just got my Victron/Gobel/JK system running and updated Fireware 15.32 to all 3 bms. Now only amps from B0 & B1 being sent to Cerbo. Any clues on why B2 is not being added? Thank you
I've updated 3 ver 14's and 2 ver 15's a few days ago... still waiting for batteries to arrive. Still trying to figure out a way to attach the 4.3" screen to my battery boxes, have to got yours yet to try out your 3d printer ?
I'm in the process of upgrading some Seplos Mason boxes with the JK BMS and also the screens. I don't have the screen though just the large one😆
Link to the Adapter ?
In the description now, Claus. Use the Waveshare link on my website: off-grid-garage.com/bms-communication/
Good job Andy, really helped me out!
Hi andy, been trying to get my JK-PB……. to connect to my laptop all evening, downloads latest monitor 2.5.0, tried 2 ethernet to usb’s and 2 ethernet cables, but allas, even tried different plugs on my data board and diferent dip switches, bms just will not connect. I have the original sw on it so cant connect to my 16S Lifepo4 battery, connects to my phone via app, any ideas?
Same problem here
@@sjdtmv what version of windows are you running and is it a pc or laptop?
Win11 @@deanrowles3665
@@deanrowles3665 Win 11
@@deanrowles3665PC or laptop shouldn't make any difference
Hey Andy, big thanks for your work. Today i installed the version v15.17 on my JK BMSs. Di you have any changelogs this time? You know a way to get out every single cell voltage out of the BMS, in best chase via CAN? In my Case the BMS ist connected via CAN-Hat on the Pi to the Venus OS (latest Version). Is it possible to you to talk to JK to implement that the cell voltages transfer via CAN to the Venus OS? Best regards from Hamburg, Germany. Thomas
Hello Andy, I am considering installing batteries from 48V LiFePO4 cells. Which BMS do you recommend? SEPLOS? JK BMS? Or other ?
Go JK, still the best in its class...
did the dog pass out from the heat at 10:07?
Hahaha, he enjoys the colder concrete in the garage. A Kelpie is made for hot weather.
I have two 100ah jk bms. One connects to pc software (will show voltage and current on pc 2.8.0 but all options are grayed out and firmware update stalls at 0%. The other one says connected but shows no info and gives no options
Hello Andy,
I love your videos and they are very informative.
I have a 12v system and 2 battery packs, both with the JK BMS B1A8S20P and is it also possible to connect this to a PC and carry out a firmware update?
I have contacted Jikong BMS several times in different ways by email but unfortunately I have not received a response until today.
I can't really find any clear or even useful information on the internet.
I have the right RS485 adapter with USB converter and it also connected to Venus os with a Raspberry Pi4 and it works.
When I connect this to my computer and press the correct COM port, it connects but with no information or data in the JK-BMS-MONITOR.
And I have another question, I have a third JK BMS B1A8S20P but I forgot the password. Is there also a way to reset this BMS so that it can be used again and the settings can be changed again?
Kind regards from Germany
Thanks Andy for all your hard work in these videos. I enjoy them all, and your humor as well :). I just ordered the JK pb1a16s10p, and fingers crossed. The JK site and support documentation/link/manuals are very hard to find. They have work to do on this! Question, to upgrade the firmware on this unit, do I need the RS485 to USB adaptor, or can I simply use the network cable from the RS485 port on the communication board, and plug right into my network port on the laptop? ( Will the MK3 to USB adaptor work from Victron?) Probably wrong communication protocol with the MK3 adaptor , but just trying to keep it simple... Ideally JK should just have BT firmware downloads we can do right from our phones vs having to connect cables, laptops etc...
saw the MK3 to USB comment below. thanks!
Hi, I have some questions for you about 48v lifepo4 charging, is this the right place to ask?
Yes!
I have a 15kw lifepo4 battery pack which I have fitted to a Reva Gwiz electric car, I have a spare Outback VFX 3048e inverter/charger I was thinking of connecting it to the pack and feeding in 230vac to the hot in. This should actually act as a 45amp DC charger plugged in to a normal supply? Or plugged into my off-grid solar supply?
What have I missed?
@@EllisBergman Uh, sorry, that is very very specific and I cannot really help you there as I don't know all details and regulations in your location. Someone would need a lot more information, see drawings and calculations to fully understand your setup and design. It's best to contact a local electrician who has knowledge of all requirements.
Ok, thanks for your time, Outback won't help, there are no restrictions here as it's all my own supply and there is no one who seems to understand it or want to give advice. I thought it was a straight forward question. Nevermind, your jk BMS videos are very helpful. 👍 If you have any thoughts on the idea please let me know. Regards Ellis
Thumbs up 👍 thank you for your work 😊
Thank you.
Hallo Andy,
Had some trouble today to update a harwareversion 15 BMS from 15.05 to 15.17 using the newest PC Software. Had to uninstall and install an older version.
Maybe helpful for others, if you can provide also older PC software version on your drive?
Hi, thanks for the video! If I turn on the first dip switch, there is no connection but if I turn off the first dip switch, the connection is there and I see information from the BMS, but all menu items except "Paralle" are not active. What am I doing wrong?
Perfectly fine. If you have only one BMS, you set all switches to 0000.
Only if you parallel the BMS you start with 1000, 2nd BMS with 0100, 3rd BMS with 1100 and so on...
@@OffGridGarageAustralia Got it, thanks! But why are all the menu items inactive?
@@tvgoogle8219 got the newest software for the PC?
@@OffGridGarageAustralia I have the same problem as described here at "diysolarforum" tread "JK PB2A16S-20P No Communication". I suspect that the problem is in the adapter. I use Industrial USB To RS485 422 Converter with CH340G Chip. Version of the PC monitoring software 2.8. Frimware BMS I have two versions 15.27 and 15.30.
The problem was in the adapter(Industrial USB To RS485 422 Converter with CH340G Chip) , maybe it is not compatible with my version of BMS or it is defective. I have ordered two other types of adapters that Andy recommends (Waveshare Industrial USB To RS485 Converter with FT232RL Chip and RS485 to USB Adapter Converter) and they both work great.
Hello. Is it necessary to restart the BMS after the update?
It does a restart itself afterwards and beeps. By then, it is ready.
@@OffGridGarageAustralia
OK. Thank you very much
Does that PC Software save the BMS profiles you set to a file, so that you can upload the settings profile to multiple BMS' ? Just thinking of folks with several packs in a bank.
I have not seen an option for that in the PC software, so I would say, NO.
But with my last few fw updates, the settings were still there.
Hi Andy are you still running seplos BMS ? I see that there has been new firmware releases today for V3 any chance you having a look at it for us Seplos owners
I upgraded them to 0.6 yesterday or the day before. No change log, so we don't know what the difference is. I'll ask them...
Hi guys ... i have a growatt spf5000es And a new jk inverter bms 200a... everytime i select Li battery type takes me to setting 36 protocol L00 ... what should be settings tried the L40 which someone suggested but inverter shuts down after a few seconds
Hello sunny Australia. I’m in need of some help. I have 5 14kw hour lithium iron packs that I want paralleled. I have 5 relay based 300amp Bms by jbd. Do you by chance know a good way for them to connect to each other? I have all voltages in the packs sitting at 52v.
As long as every pack has its own BMS, you can just parall them. I would suggest to a DC circuit breaker to each of the parallel banks as well.
Fully charge the whole battery and they will balance against each other once you hit ~54V. Some packs may stop while others will still charge. Totally normal.
Quick question... Do these BMSes have a delayed inverter start to allow pre-charging of the battery inverters' capacitors?
My REC BMS has a special circuit for this with a relay etc, but doesn't allow you to parallel BMSes without buying an expensive Master BMS (which only allows three slave BMSes, limiting the overall capacity). So if I can get a decent alternative that can parallel using the Pylontech/SMA protocol with capacitor pre-charging I'd be very happy to try them instead.
Power up is not something I do very often, so I have a large resistor that I can switch into circuit for 2 mins before turning on the main battery breaker. It's inverter designers that should implement this rather than BMS manufacturers..
@@dougle03 I agree that it should be part of the inverter, but I won't be throwing out my two Sunny Islands just because of that!
Yeah, I've bought a couple of resistors too. The REC BMS's delay contraption doesn't seem to wait long enough to sufficiently pre-charge the two SIs anyway, so I guess it's a bit moot as I'd need to use the resistor anyway.
Yes, the JK BMS does this automatically. I'll explain this in the next video where we go through the settings.
Hi Andi so it’s working just with new model of jk bms ? Or it’s working also with older models ?
Just the new models. The older ones have way to upgrade the FW.
Andy is the JK inverter BMS working smoothly/ reliably when paralleled with an additional JK inverter BMS? Haven’t heard anything since your parallel battery vid a while back.
Thank you.
I did only a test to check on settings and so on. I don't have a production setup yet...
@@OffGridGarageAustralia
Thanks mate, once you give it the all clear I plan on buying x2 units.
Fingers crossed
Can you force update to an older firmware version? The button seems available when selecting an older firmware.
But it also seems to be available for a different device firmware, which would be scary.
Could you reset to "factory settings", i.e. the original firmware version and then upgrade to an older firmware version maybe?
I don't think so. Force Updating needs a code form JK which is only valid for 1h or so...
There is no reset to factory default button anywhere, so not possible.
Heya, oke wel as long as it keeps doing what it has to do I'm oke with it. but why is it so difficult to get it right the 1st time ?
Hi Andy can you downgrade the BMS when you hit the force updating button?
No, you would need a code from JK every time you do that. So, not sure if downgrade works through this process at all.
Thanks
Hello Andy
I've been following your channel for a long time and was very impressed with the introduction of the JK-BMS.
Of course, I quickly bought one in the hope that it would work with my system, especially since the 2A balancer completely convinced me.
I don't know if I understood correctly that you were or are involved in the development, but in any case I'm eagerly waiting for a firmware update that supports my system because it works perfectly with Seplos-BMS.
It's about the interaction of JK_PB2A16S20P (vers. 15.17) with an SMA battery inverter_Sunny Island
At Seplos the protocol is called: SMA_CAN or Sofar_Can protocol
Do you perhaps have any influence on the developers so that this is implemented in a next FW update?
Thanks
Keep it up, you keep inspiring me
Thomas
rs485 to usb adapter link?
In the video description and on my website now. Tested all USB to RS485 adapters successfully with the JK Inverter BMS. off-grid-garage.com/bms-communication/
Hallo Andy,
ich habe ein Problem mit der älteren Generation (JK-B2A24S) und frage mich ob dich das vielleicht auch interessiert.
Kurz gesagt wenn man discharge auf off hat, und charge auf on kann man nicht mehr laden. Ein Kollege und ich haben insgesamt 5 JK-BMS (2 verschiedenen Hardware-Versionen) und möchten mit einem Riden RD6024 16 Zellen laden.
Da wo wir das festgestellt haben möchten wir jetzt gern rausfinden ob es ein Hardwarefehler ist oder ob das durch die Software auftritt und somit durch eine Firmware zu beheben ist.
Dein Video ist dazu fast passend, aber halt leider nicht für die letzte Generation, wir finden auch kaum etwas, bis wenig.
Meine erste Frage ist eigentlich, kann ich die alte Generation überhaupt selber updaten?
P.S. sorry das ich alles in Deutsch geschrieben hab, ist das ok? ansonsten muss ich mir mehr Zeit nehmen und es übersetzen (lassen ).
Liebe Grüße
Nur die neuen PB BMS koennen mit neuer FW geflasht werden. Die alten gehen nicht, die sind wie sie sind.
I see alot of comments about cables. Andy could you do a video on JK to computer cable to update fireware, JK to cerbo ( communcation) and JK to raspberry pi Communcation.
OK, I'' add this to my list of video but I don't know where the confusion comes from.
For the RS485 coms, you only need a nromal LAN cable
For the Cerbo/inverter CAN coms, you need to make your own or use Victron Type A cable. That's pretty much it...
@OffGridGarageAustralia I always look forward to your videos Andy. Forget the informative content, the entertainment alone makes them worth watching. I do have a question, I have just installed a new PB2A16S20P. The FIREware is V15.12, Is it worth upgrading to the V15.24? I haven't seen V15.12 anywhere to download (IF V15.24 has more bugs) to downgrade.
Hy Andy and Community... i have a great problem with the firmware update. I have 2 2A150A HWV15 with the 15.10 firmware. Everytime i start the update my bms shuts off and nothing happen.... Have anyone suggestions for me?
I`ve tryed different computers....different cables.....3 versions of the PC Software... always the same
I hope there is a solution for that
Same issue on my Bms, same HW, same SW as yours
There is no way to upgrade firmware on JK_B2A24S15P, right?
No, just the new, larger PB BMS can be upgraded.
Your PV panels are parallel as i followed on a german live stream.
Do you use diodes to avoid back current to shadowed modules?
Maybe you want to make a video about that ?
I think he already did a video on that subject. Check his video titled something like « tutorial: solar panel protection in series en parallel »
I think he's using panel strings in series rather than parallel.
No diodes needed. They all have the correct size circuit breakers in case one string is faulty.
I have only two panels in series and 18 in parallel with 4 MPPTs.
Only two in parallel, no? 18 in parallel over four strings would have extremely high current needing thicker wires.@@OffGridGarageAustralia
-V14.20 Upgrade logs
1. Button shutdown logic detection and optimization.
2. Bluetooth communication optimization.
-@2024-01-17 by JKBMS
What is a shutdown logic detection???
Good question for jk ;-)@@OffGridGarageAustralia
I have two JK-PB2A16S15P with 15.05 and trying to update to 15.10 but when I click start updating it just stays at zero percent bms will beep after a few minutes and reset. Speaking to support they think I need a temporary code to update. Hopefully, I will be home when they send me the code.
How did you contact support? I sent an email two days ago, but haven't had a response yet. Curious what the solution is for you. Problem I have seems to have common ground with your problem.
@@alexveldman2465 I wrote them a message through Aliexpress. So far they have been responding within 24 hours. The last update I got from them is I need an authorization password and to contact them again in a few days.
Does anyone know if this new JK BMS will talk with MPP Solar inverters? The 6548 model specifically?
The MPP inverters are having RS485 coms only, I believe. I would contact JK and ask...
Is the Bluetooth app for Android removed from the website ? Can someone confirm this
Was it ever on their website? Have a look in my Google Drive. I still have the .APK file there for Android:
off-grid-garage.com/battery-management-systems-bms/
Hi Andy, and all the other readers, I recently bought and received the JK_PB1A16S10P three times. According to the blue tooth app on my android phone, it appears to be a hardware version: V15. XA with Software version: V15.06 (all three) I want to update this to V15.10. I got this version from both the JK site and the Off grid garage Drive site. The dip switch is set to 1000 In both cases I keep the warning: Device Identify is not the same to connected device! (In all three) What am I doing wrong? Or is there another bug in version V15.06? Does anyone know what to do? PS: I hope this comment doesn't end up in the list multiple times. But I don't see the reaction itself in the list anymore.
I have received the temporary password via whatsapp from JK. With this I was able to update the BMS to V15.10
Would like to report that the firmware V15. 17 and 15.32 interfere with the connection of the inverter Deye 16 SF and meter Eastron. I was forced to dowgrade the firmware to 15.11 to restore the communication between the inverter and meter.
where did get the firmware from? its no longer available on their homepage..
Hi i just got my usb to rs485 converter it looks the same as your one. I can not get it to connect to the jk pc app. Is there any trick to install the usb. I have set everything just the same as the video.😢cheers🍻
What is the chip inside your controller? Mine has the FT232RL chip and works well with all BMS.
@@OffGridGarageAustralia not sure I will try find that out and get back to you. Thanks.
Ok the folder from the CD has FT232RL ON IT
@@GarryL277 That should perfectly work. I've tested now a lot of adapters (will be in the next video) and they all worked under W10 and the newest PC software 2.5 from JK.
@@OffGridGarageAustralia my jk is 15.05 firmware maybe that’s got something to do with it or a faulty BMS
FYI headline is wrong, has to be called
JK Inverter BMS Fireware Update Process.
Dankeschön!
Interesting, that the update software as well as the Feuerwehr on your google drive have a higher version than the one found on the official webpage. I guess they use you as beta-tester.
I updated the bms to version v15.23, after the update the display stopped working, everything else works, is it a software error? anyone else had this??
Cheers!
Andy... You are our last hope... Low temperature trigger. Please help with communication to JK team. For some reason they take out from firmware (15.10 here) "low temperature" trigger (for dry contact). Is was one of the major function for me and for some other people here. Could you be so kind and try to convince them to get it beck? Thanks!
So, this function was in the latest v14.20 but not in the v15.10? I thought the are having the same functions and features?
@@OffGridGarageAustralia it looks like. I checked it so many times. And suspicious is that Aliexpres official store write me that there are some issues with heating so that cancel heating function. My thoughts are that they for unknown reasons delete either low temperature trigger. And I can confirm that heating function is missing in software but all 5 tem sensor are working just fine. Maybe they are right that heating and use 2-3A trough 4 or 5 thin cables isn't the best idea but... Please return triggers... No response from them email, WhatsApp, web form). Could you please be so kind and help? I can send you screenshots. Thanks
@@mateuszmazur1482 Are you actually talking about the heater function or the low temp trigger for the relays?
@@OffGridGarageAustralia @OffGridGarageAustralia both are missing... But heating function is not so important. If there will be low temperature trigger for dry contact I could use it easily.
@@mateuszmazur1482 It is Chinese New Year at the moment, they won't reply until end of February. Most companies have closed or are on skeleton staff...
With such an amateurish company doing many things with so little attention to detail, do you really have trust and confidence in either the hardware or firmware design or implementation?
No, I don't but other solutions are not better. All comes from China and is not of great quality. And I consider the BMS as a safety device... Maybe we should stick with Seplos as they are in the market for a lot longer and have no major issues...
You can force a wrong version or older version using the force update button.
You can't. You need to contact JK for a confirmation code every time you want to do that.
JK BMS PB2A16S20P met Hardware ve: V15.XA firmware: V15.17 een firmware V15.37 te hebben uitgevoerd, is na de ip-adresen hardware ver. V15.XA verandert in V15.A
Is deze verandering normaal? Of heb ik een verkeerde firmware update uitgevoerd?
Kan iemand mij hier duidelijkheid overgeven?
Ben benieuwd of ik nu iets fout heb gedaan of niet,
BVD
Groetjes Jurgen
Clear as mud! What a mess!
Andy not judging but totally judging! 😂
Fireware update 😂😂 maybe they are predicting something!!!
I'm not judging!😉
Anyone that has manage to update the firmware with something else than a RS-485 adapter?
Seen some people having trouble with finding the correct RS-485 adapter, and I was wondering if there was another way to update the firmware using for example RS-232 or TTL? And if needed connected to another location on the BMS? Maybe on the ARM32 pinout?
Its funny you should mention this, as its not the only problem I am having, my laptop running win10 has the prolific serial to usb chip, if you look in device manager MS says that the firmware has been stopped since 2012, only 12 years ago, so I am trying older firmware to try and get it connecting
RS232 does not work correctly with the new JK inverter BMS. JK advised to use RS485 only.
And that makes it more interesting, since I have seen some people comment that they have been able to use an RS232 adapter on the RS485 port succesfully. And more people comment that the RS485 adapter they used did not work. Saw one comment where a store selling the JK inverter BMS recommended to only use one specific RS485 adapter (which they did't directly sell either).
@@john-arvidkibsgard616 I am upto 2x RS485 adapters so far, still no joy, I have another 2x on there way. 🥲
Simply amazing.....in any way 😂
Thanks. It's so easy to upgrade, hahaha
Fine
Usually any Firmware update comes with a READ ME file as standard.
It's maybe called JHdu9823nkl0K;JN*N.txt ?
Still no go on connecting to PC as per video, I am using a
Bewinner Industrial Grade USB to RS485/422 from Amazon, I have tried a
Cable Matters USB to Serial Adapter Cable 0.9m USB to RS232, USB to DB9 using the RS-232 port with no luck, I also used a RS485 serial USB toggle without success, I have now ordered from Ali what is supposed to be the right cable, I don't think all USB to RS-485 RJ45 are wired the same, be so much easier to do it with a phone APP, so at this stage I am waiting for delivery from Aliexpress, Been a real pain in the arse
Maybe you are using wrong adapter drivers, I suggest you to search and test old drivers.
Win11 Device manager shows no problems with drivers on the Comm Port@@patriotaxl
Try WIN7 driver , I had the same difficult
I have spent 2 nights trying to get this fixed, I too am using the usb to RS485 from amazon, I tried win7 serial drivers and they didnt work for me, I have now loaded a prolific driver from 2008, still not perfect tho, so no fix yet
Some older prolific drivers come up with an error under later windows OS, I have found this being the case with my Zhetech battery tester, but is easy to work around with drivers under Device Manager, I think the problem lies with hardware on the termination of the RJ45, until the new adapter comes from Aliexpress I can't be 100%, but I think it is the plug end.
You might want to include the full firmware version in the download file name.
It's in folders and it seems, I don't even need to keep the older firmware files as there is no way to downgrade...
what will happen by Force Updaten when try to downgrade
will it brick it self just curious?
and nice joke with fireware and Feuerwehr as i heard fireware i had thinked of a Feuerwehr
Every Force Update needs a confirmation code provided by JK, so there is no way to play around with that...
🚒
Here's a partial conversation thread from my interaction with a sales rep.
Sales Rep-1.Disconnect the host.
2.Select Force update from PC software. (Need authorization code, I will provide you)
3.Press the activation button without releasing it.
4.Press the reset button and release it quickly. You will see the PC software and start the firmware update.
5.If this fails, repeat the preceding steps...
Me-When you say disconnect the host, do you mean pull the wire out between BMS & PC, or push the disconnect button in the App?
Sales Rep-First button...Do you follow this step? (she sent me a PDF to upgrade fireware).
Me-The BMS has the latest firmware installed (see my earlier picture above), I just want to be able to change my settings... this should not be so difficult!.
Sales Rep-We do not recommend that you modify the parameters yourself.
Me-I have to modify them, they come with the wrong settings out of the box.
Sales Rep-Yes, you need to use rj45 wiring to brush the computer.
Me-Brush the computer? what does that mean?
I like entertainment😉
Ye good, so i was updating it to downloaded v14.20 And its faul in 4 %, now the bms not working And cant even try to reupdate.. 🙈
It's in the next video. I had the exact same problem!
@@OffGridGarageAustralia ze thanks, i solve it just day before the video, the hard think was get the code from JK it was impossible.. but they seend it to me and now all work fine. Thanks
👍
From JK 14 ad 15 hv version
-V15.06 Upgrade logs
1.Fixed a bug where parameters were lost after BMS restart. The bug is caused by a logical error in the parameter entered by the user.
2.Change the default configuration parameters to LPF to improve security.
2.Optimized JKBMS Modbus protocol, added RCV RFV register support. The protocol must use the PC software version V2.5.0。
3.Fixed the Bug that the hardware version may be incorrect in the device information.
4.Add battery low temperature alarm to dry triggers.
-@2024-01-09 by JKBMS
-V15.09 Upgrade logs
1.Fix a bug, parameters (RFV Time) Storage failure.
2.Change the default configuration parameters to LTO to improve security.
-@2024-01-12 by JKBMS
-V15.10 Upgrade logs
1. Button shutdown logic detection and optimization.
2. Bluetooth communication optimization.
-@2024-01-17 by JKBMS
AND for 14
-V14.20 Upgrade logs
1. Button shutdown logic detection and optimization.
2. Bluetooth communication optimization.
-@2024-01-17 by JKBMS
That's the same log for v14.16, so 15.06=14.16 just different hardware.
Ha ha ! Fireware ! You killed me !
The filenames look like GUIDs
Hmph. They are using a UUID for their firmware filenames. What a mess.
Using http is even worse 😅