No (easy) access to Master BMS of your Seplos battery! Seriously?
ฝัง
- เผยแพร่เมื่อ 7 ม.ค. 2023
- I really like the idea of connecting all #BMS together so they act as one battery, having them reporting all data to the #Victron system so we can act on it. But... yeah, where do I start?
Bluetooth software is still buggy, master battery cannot be accessed through PC software, SOC is drifting further and further apart,... just to name a few of the issues I'm dealing with for the last couple of days. All this can get really frustrating. To go one step forward, it is two steps backwards first. NOT GOOD!
Is the product unfinished or is it just because I connected two different BMSes which is not recommended by #Seplos? There must be a solution to make this work! It cannot be that hard!
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Thanks Andy, for figuring it out for us and let them know, keep up the good work !
Thanks, will do!
I think I'll hold off on Seplos for right now. I am tired of being a product development engineer for these companies and paying them for the opportunity.
That's a bit harsh isn't it? How's the one you developed going?😄
@@mikekoens7284 ? I'm not the one promising something that they can't deliver. Not harsh at all. If you buy a car you expect it to function correctly and as advertised. If the wheel falls off and you complain and they have to send you a new bolt because they used cheaper bolts to save money but they break. That's a problem.
@@timpatton3948 I've had one of these BMSs for almost 12 months, and have been aware from the beginning that they have this limitation. Not sure where I saw it, I've just been perusing the manual, can't find it there ATM. Anyway, apart from my own limitations in my ability to get it to talk to the inverter, I am very happy with the way the BMS performs. My only criticism would be the manual, if it was a bit clearer, I think I would be able to get it working!😏🥺
If you stay with the same battery capacity it will work fine. I'm testing a non-recommended setup here.
@@mikekoens7284 I used the Ant BMS - two different versions - to build my packs. The first did not even come with the app! but I eventually downloaded it from a link left from a you-tuber. The installation was easy and rather self intuitive, even without any translation. The vendor page had a bunch of pictures worth a thousand words! I later asked and got a manual from ICGoGogo to better understand the programming of the parameters used in their bluetooth apps. That will be useful much later when I design my own ESP32 based BMS. Meanwhile I watched and learned from Andy's + others of course because it's less work and way more fun. My BMS do not talk to the inverters. They just cut off whenever the measured voltage or current threshold of one cell or the battery is reached, according to your programmed values. Moreover you can program a warning before them an you can even set it to send an audible signal. What Tim Patton said is justified. Most of all the electronics is designed in China and will come without much help. So it created a market for integrators in the US, Australia and other countries to repackage OEM electronics and provide documentation as well as some limited services and warranties. This way you'll feel "pampered", more like you're shopping at home. However they're also in the same boats as we are. They're learning "their" products from customers feedback, albeit at a faster pace than the rest of us, because they deal with much larger quantities.
Thank you so much for your amazing research so far.
Don't give up Andy! Please stay in the topic ! cause i plan to buy a additional Battery Bank with Seplos BMS and connect them via CAN.
I'm not giving up, don't you worry. I'll find a way...
Hold the faith andy. I have three of the big battery in parallel and other than the can issues you already know about they have run perfectly for last 6 months in my ess Victron system with ac and dc coupled solar. I’m adding two more to give 75kwH
Thanks for sharing. All the same BMS and batteries?
First and foremost a big thank you to Honest Andy. We are very lucky to have you and your ability to tell it like it is. Thank you from all of us DIY’ers.
The question I was going to ask was (and it had nothing to do with this video originally) was if you had any intentions of trying some of the many other steel box diy kits for similar Eve 280cells, or any cells really. I think it would be great for us DIY’ers to see the same level of honest review of some of these other “steel box and BMS” kits available. Any chance of that happening in the future???
Personally i prefer that he sticks to the non turn-key approach. Why is everyone so obsessed with getting them? They are more expensive and basically neither serviceable nor accessible at a DIY level. We're trading our basic learning, our pragmatic know how of open architecture for convenience at much higher prices for those integrated solutions. This would only make sense if it was saving us money, but I do not see that as of yet. Thanks to the testings Andy did for those Eve with different BMS, active and passive, I learned and felt confident enough to replicate his primary installation with noticeable different hardware that cost a fraction of what he paid for and yet worked as well. At least his testing on the Seplos taught me to stay away from them.
@@francoisguyot9770 Last I looked they were pretty competitively priced, when including the BMS and enclosure. Ready made is $2.5K to $3.5K for 4KWh. The batteries posted to you are likely to cost $1500, the BMS at least $200, bits and pieces (wires/fuses/container/etc) is likely another $100-$200, so you are looking at a little under $2k for something that "just works" and doesn't take up hours of your time.
DIY is def cheaper, but it is getting harder and harder to say it is better.
@@francoisguyot9770 I understand what you mean, the “shelf batteries” Andy built were very transparent in how everything connected and worked, ideal for learning. I have done a similar thing for my RV. In my question I was interested in the steel box because of Andy’s comment that they were great value compared to Buying all the seperate components. I’m about to start building a DIY home battery and I believe it would be much neater and cheaper in the garage to have the three steel boxes in a tower rather than Andy’s shelf battery.
Anyway it’s great we can chat about these things here. Well done Andy and community.
You're just talking about the battery case here, right? There are some out there which are very similar but I'm not sure if we get any new insight.
I really thought the Seplos system will be great and a good solution between hard core DIY ('The Shelf') and ready built server-rack batteries.
@@OffGridGarageAustralia yes Andy I was talking about the box and BMS combo. As an example if we bought a generic box (without BMS) and paired that with our favourite BMS. That might be a better outcome??? Just an experiment in best of breed combinations.
Hi Andy!
And thank you again for this video, as I told you previously in one of my messages, the battery do not communicate with each other, not with each other, the communication cables to be connected in cascade on each battery are only made for Monitoring, just to be able to monitor all the battery at the same time.
Obviously when you position the address cursor for the Can communication, it's over, it no longer works. and the Cerbo (or inverter,solar controller) will have data from the master battery only.
It is for this reason that for me, this story of communication is just sales pitches.😁
Quite simply, if you set the settings on the solar controller or inverter to Good, you don't need any communication at all (this is my opinion)
I don't know enough about the victron system and the cerbo, but I have already noticed that when you connect CAN to 1 inverter,
the inverter only has information from the master battery.
(very easy to control when you have communication by CAN you disconnect one or more communication link cables, and nothing happens, but of course if you disconnect the master communication cable, you instantly have an error and alarm)
Regarding the differences in charging and discharging current, this only comes from the different resistance of your battery. you will never be able to correct this, or just modify the behavior of the battery a little, by slightly modifying the settings of each battery, but necessarily you will always have these differences in charging and discharging current, so automatically a battery will charge and discharge differently from the other.
To be able to maybe? have the best possible balance, you have to use the same cells (which also have the same resistance between them) and use the same BMS with the same cables (identical length too) and connector too, but despite this, as you get older, the differences will be even more important.
Is that why Andy when you did your Big battery charging and discharging tests with 3 different BMS and different cells, and also different capacities, I was very surprised that the balance of the 3 packs was so good? I was very impressed?!
In the end, it's not really a problem, to have these differences between the battery, the important thing is that they all charge completely and also discharge normally, and all protect and balance individually and correctly.
About this slight problem, I had to find if there was a device, just to balance the Full packs between them!!, I had found 1, it was called DBMS (for differential battery management system) on the principle and data sheet, you could adjust the charge and discharge of each pack individually! this device connected between your solar controller (or inverter) and the battery packs.
But after having had all the information (data sheet, user manual) it seems to me that this device has never seen the light of day??
There were 2 models, for 4 battery packs or 6 packs. (and different voltages and current of Max current charge and discharge)
You could even connect Lithium batteries with lead acid!!!, because you could normally set them completely differently. (Voltage and charging current, bulk and floating different)
If you are interested, I can forward the information about this, but it seems to me that they have abandoned this device, probably because it was not working properly?😜
Thanks again Andy, for this video, because you always want to do the right tests, and understand the operation and the results as well as possible, and to share this with us is really nice!👍
No, the comms still works when CAN is enabled. We can see the low/high voltage and temperatures across all packs, so the master is collecting all this info via RS485 and send it combined to VenusOS.
I'll keep trying...
Hi Andy, Greetings from Germany. 😉🍻
I also have 2 Seplos BMS 10E with Bluetooth in parallel (280ah and 100ah) but not on a Victron system.
I use a Growatt SPH4000. both batteries are connected in parallel via rs485 and communicate.
the large battery is connected to the Growatt inverter via CAN and communicates with the master battery without any problems. DipSwitch Master: all off / DipSwitch Slave: only #1 on. Automatic DipSwitch communication off because it doesn't work. Only manual configuration works. I don't use BT.
In both batteries are one Neeeeey!! 🤣 (I have to laugh about it again and again) 4th generation installed and also work well.
I only had a communication problem between the BMS once, but it was fixed after turning both BMS switches off and on again. I also noticed that with a very small charging current (less than
Thanks Andy, we have had Seplos BMS for almost 2 years now, much older models with 2x 200ah battery packs. At the time we were not even aware that these were Seplos BMS because we purchased the batteries from another manufacturer, and our batteries were also standalone, i.e. not communicating with the inverter.
I found a solution to the SOC issue perhaps you can test it out and share a video of your thoughts. It will also be helpful because you are able to access the BMS settings where I cannot (dont have the cable, sorry)
Our natural thinking was that if the BMS is showing a OV-Warning that you need to back off on the charge voltage, which we did naturally down 0.2 V every time. This was the wrong solution as in extreme cases we had one battery showing 96% SOC and the other showing 8% SOC (Discharge Shutdown) but the pack voltages were both 54V.
We did lots of things but what "magically" fixed the problem and we have now been running 6 months + without the issue reoccurring. Upping the bulk charge voltage of the inverter to the point where the BMS shuts off the charge mosfet itself. One pack shuts off at 54.6 V and the other at 54.8, when the BMS shuts off it automatically Syncs the SOC value to 100%. My brother has the same setup with an even older inverter, his batteries both shut off at 54.4 V, this could just be inaccuracies in the voltage readings.
What I assume is happening is the BMS does not have an accurate current meter, so it is losing accuracy each day regarding what is going in and out of the Battery. In my case, the drift is approx 0.5% between the two batteries.
Charging to where the BMS shuts off itself forces the sync to 100% SOC
Keep After Them Andy! You have more influence over them than anyone so if your testing can't show them they need to fix their issues, I don't know what will. I have 10 of these BMSs (Various Versions) installed inside batteries on several different systems and I have noticed unpredictability in all of them. There are 1000s of these units installed all over the world. I can't believe they have these huge design flaws and yet they are deployed everywhere! Insane! I totally agree, great potential. Just get your Sh*t together Seplos! If you buy a server rack battery, you are almost certainly going to being using Seplos. Insane!
It's a long way to walk....
I have discovered more design problems with their BMS logic. Coming up soon...
Hi Andy, again very interesting to see your video. The communication problem with activated CAN communication is unfortunately well known. This is really not good.
However, I must also say that you are using a system configuration that is not intended. On the part of SEPLOS are only battery packs to operate in parallel, which have the same technical requirements. You have the 280 DIY Pack and the Masonpack with the 135 Ah together in operation. This can be seen from the Ah hours displayed in the Victron. 560 would be 2 packs of 280 Ah. This also says the CAN configuration. 2 packs and the 280 Ah hours pack is your master. The 411 Ah hours are then the 280 + 135 Ah Yes there are still 4 Ah missing, but that is probably related to the calibration values. Try taking out the Mason 135 Ah and putting on the second 280 Ah pack. I could bet that then the system behaves a little differently.
Please allow me to comment on the cables you use to connect the two packs to the busbars. You should connect 1 cable from the Mason 135 Ah pack and 1 cable from the 280 Ah pack to the power in. Not both cables to one pack and then to the Power In. However, it would be best if you connect both packs directly to the Power In and do not clamp the parallel connection between the two packs, but connect the packs in parallel via the Power In busbars.
But before I forget I wish you a happy new year and greetings from rainy Germany.
Thanks. I know this setup is 'not recommended' but it still should work. I'm testing here to see what the issues are and how far we can come. I'm sure, the system showed the correct Ah when we tested this before, 280Ah + 135Ah. That data in the VenusOS makes very little sense.
The cables are temporary as I said.
@@OffGridGarageAustralia No, it won't work correctly, you are experiencing exactly what happens when your loads are not balanced between packs. Just connect correctly and give it a few days to balance. If you had more packs this would be obvious because you would see the packs SoC graduate down to the highest SoC in the pack farthest from the load leads, but seeing 2 you're just not getting it. If you connect as we have said, the load lead length will be identical for every pack and no voltage drop will be visible between packs. Then the voltage being identical, they will self balance. If you connect as Green home energy has suggested, make sure all leads between packs and bus bar are the same length.
It seems Seplos needs to add an external antenna socket for an antenna to be mounted outside the metal case for decent communication also. (And supply that external antenna as part of the kit for the BT BMS)
Thank you for this video. Yes, it is not good to communicate with seplos if you tell them anything doesn't work like expected. This is what I've got learned. I have a problem with the protocol witch enables 'battery equalization' at the inverter after some time like if there where lead batteries connected. And they won't understand, that the protocol has to disable this function on inverter. It's terrible! 🥴🙈
Greetings from Germany, Andy! 🙋♂️
I think it all comes down to communication translation and not really understanding what the other person means. I've got the feeling, I have to break everything down, bit by bit, so they understand what I actually want.
RS485 is a master slave communication protocol. The PC software acts as a master and batteries as slave, except the master battery who is a master also, since it needs to retrieve cells information from other slave batteries. that why the PC software can't talk to a master battery. 2 master can't talk to each other and a device can be only master or slave, not both.
The 2 rs485 port are connected in parallel to the same RS485 interface, so it doesn't matter if you switch your RS485 cable.
They can try to modify their PC software and firmware to detect masters collision and restart command from both master with different timing until success
But the only way to get this right is to have an additional independent RS485 port and interface on the battery, just like pylontech and some other battery.
Great work Andy, woukd this be such a problem if i decided to go with the lastest 3 x Seplos BT systems for my 280ah all link and the same batteries,or do you still see issues.
Or would you lean towards a custom built shelf with JK BMS's in place. Thank you Kal
Since the two batteries are of different capacities; does the charge controller accept the master battery’s SOC / voltage as nominal?
What will happen if the smaller battery reaches low SOC ? Will it shut off the whole system or will the system still run with the higher cap battery ?
Hey Andi!
It works, even with dipswitch 5 activated. You have to type set pack adress 00. then you can access the pack 00 or 01.
I tried that as well and it didn't work for me. What Battery Monitor software version do you have?
it didn't work for me for the last almost 2 years. what is your firmware and battery monitor software?
@@OffGridGarageAustralia i use V2.1.9 for the Batterymonitor and Firmware 16.4, i dont marked any pack, but typed packadress 00 or 01 and connected, so only one pack is shown, but i can switch between if i change pack adress during beeing connected and press setting
I would have thrown away those Seplos BMS long ago and replaced them with JKBMS ... how I admire your patience :D
I want to make this work!
@@OffGridGarageAustralia I understand you, but this seems like pissing against the wind... no offense pls :)
hi. just find ur channel and watching all the videos from yesterday, awesome stuff n efforts . just one question is SEPLOS HITEN bms are available ? because I have 80 LG Chem's lithium-ion cells 42aH each and want to built HV battery for my Growatt inverter.
Hello and welcome. I don't think they are making HV BMS. Not many gear out there for that as it is not DIY any more.
Correct me if I am wrong, your cerbo cx can also connect throug rs485 (ok, you need a dongle) but should be able to communicate with both soplosses
Not sure if this would work but it's a great idea... keep it RS485 and no CAN any more...
Hey Andy, I have the same issues with connecting. I think as a work around they should make a dummy master module. I have 4 x 100ah and really once it were setup they are working fine. only problem is I had a lose BMS wire in a pack and shut down all supply which is of poor design, and not great for redundancy. The balancing also works fine, as for when I wrote this the difference across the packs is 3.363 - 3.370v which is more then fine. I also find they SOC drift over time and requires a full charge to correct this issue. Thanks, Matt.
Thanks for sharing, Matt.
The reset of SOC is also a problem as it requires either the cell or pack max charge voltage to be reached before it resets to 100%. Yes this cn be adjusted but imaging I set this to 55.2V and everytime it reaches this voltage, the BMS turns off the MPPTs 🤦♂️ They don't understand that this is a problem with their design.
@@OffGridGarageAustralia I also had a major fault out of the blue, costly fault. The Seplos battery disconnected once charged and because there were only a light loads at 100% SOC. Then I turned a large load on and for an instant the only supply were the MPPTs and the high impedance supply and the mosfets within the Quatttro let the smoke out. careful of the battery set unloading with all the solar you have hovering around 100%, especially with large inductive loads.
Andy, sounds like beer time and a nice walk. It shouldn’t have to be that hard and can’t say you haven’t tried. You’re a true trail blazer. This issue, along with the poor factory balance, these batteries are “bleep”.
Hi Andy, I just found your channel a few days ago when trying to learn about smart BMS's. Your content is amazing, full of information and humor, and I am greatly enjoying learning from you. My late father was an immigrant to the US from Austria, so your German accented English is a pleasure to listen to. I have subscribed to your channel.
I have a question that may have been answered in one of your videos that I haven't seen yet, so please excuse the question if that is the case.
As a "general rule", how much would be saved by making my own 300ah 12v pack from "storage grade" LiFePO4 280ah cells vs buying a $700 USD prebuilt pack? Assuming no cost for tools and my own time, just costs for the cells, the wire and terminals and maybe a pack fuse, the aluminum for the cell interconnect buss bars, the steel or aluminum and hardware to compress the packs, and the 150a discharge rated smart active balancing BMS?
I look forward to your response and guidance,
Philip from Oregon, USA
Thanks a lot, Philip and welcome to the channel. Great to have you here!
I would say you can save 20-30% when building yourself plus all the knowledge and skills you gain by doing so. You will always know your battery well and if something goes wrong, you will know exactly where to look.
The Inconveniences and bugs are most popular features from modern equipment (usual Chinese) vendors.
Be strong, Andy!
I'll find a solution!
I think the best would be to connect the Lynx shunt to the cerbo and then in System setup > Battery monitor set the lynx shunt as the main battery monitor so it would read the Voltage,Current,SOC correctly, But then would the mppt still be in external control by the bms? That would be a good setup to test
That would be the alternative. In this case, we would not use the Seplos BMS connection at all. This will work as the battery shelf then with single individual batteries.
I wanted to have this battery acting as one... I'm not done yet... 😉
You work harder than anyone online to get it right… I hope it happens for you… hang in there.
Thank you. Yes, I hope I can find a solution.
Hello Andy, just out of curiosity, if one cell in one of the packs exceed the max voltage, will the CAN communication force the Victron system to reduce the charging power or will the battery pack go offline? I haven't much experience with SEPLOS or the other BMSs you are using. I'm using the Batrium BMS with CAN communication to Victron. When there is excessive balancing or when the state of charge reaches a programmed level, the BMS instructs Victron to reduce the delivered power to the batteries. Is that possible with the other BMSs?
That is part of my test series. At this point, I'm not sure if it does that naturally or we need the help of Node Red to get such functionality.
In theory, it should adapt the Charge Voltage Limit (CVL) and also the Charge Current Limit (CCL).
The Seplos BMS reduces charge current to 10A if one cell exceeds 3.5V, but that's just for this one BMS.
Oh, Andy...!!! 🤦♂🤦♂What a communication mess...!!!
These wierd performances and readings gives me more indications that the two SEPLOS BMS's can not talk between each other and to the Cerbo Gx at the same time...!!!
I would definitely put each battery directly to the LINX Distribution system and communicate each battery directly to the Cerbo Gx... Let the Cerbo Gx run the show...!!!
Anyway, good luck with this project...!!! 👍👍👍
Hi Andy, I see the same frustration as mine. But since you have a BMS with the 10E version - is it possible to operate this as a master while using the new function of the 10E with automatic addressing without DIP switches? If you had several new 10E BMS - would they communicate with the automatic addressing in such a way that the master BMS is also accessible via PC?
I did that in the video a bit later and changed the master to the battery with 10E BMS.
I doubt you will have access to all the BMSes even if you only use 10E versions. I will try when my other cells are here...
Hi Andy. Can you not use the Target config Pack Adr field with value 16 in the program when selecting the pack to connect?
I never had any luck with this function and could nto find out how it works.
andy what happens if u change the mastery and slave on the batteries???does it act the same then it coud be caused by software if the symptoms reverse then it has to be caused by the capacity difference
I did this and it shows either 560Ah (2x280Ah) or 270Ah (2x135Ah) as the installed capacity. It does not really add up the single capacities of the batteries as I would expect it.
Servus! Wo kann ich denn so ein RS485 bestellen, um beide Kisten miteinander zu verbinden?
Andy.. i use Stuart Pittaway diybms...full integration with victron and works perfect
I haven't got time to solder this all together and last year they didn't offer the ready built PCBs. It's also not that straight forward, I would say. But I haven't had a play with it yet...
Andy, you have an extra Seplos BMS I remember, just add one more "dummy" pack to your system as third battery. So you can set the dummy BMS as master and still get access to the 2 real ones. May be a dumb idea, but worth trying maybe :)
I know, but I have no cells any more to build it.
My 4 different size batteries with various BMSs in parallel work fine...voltages are always the same..indicated state of charge is different.. why do you need communication???
I do love you videos👍
I'm testing 😉
Thanks Andy 😖👍
Hi Andy, I received my third BMS Seplos yesterday, but this one with Bluetooth.
Do you know where I can find the App Android?
Can I remote the older BMS trough the app if connected together?
For the moment I don't have any charging issue with my 2 first Seplos BMS. But if some similar problem occurs, I think I will recall the factory settings first.
Is there not a QR code on the BMS you can scan and download?
I can put this on my website to download when I'm back home (3h from posting this). You will find it here under the Seplos BMS section: off-grid-garage.com/battery-management-systems-bms/
@@OffGridGarageAustralia Hi Andy, thanks for that link, I'll try that ASAP.
@@writm1821 This website always has the latest version. They released a new built just a few days ago which includes the fix not being able to set the balancing voltages through the app as I have shown in a previous video. Glad they got this sorted quickly.
What kind of BMS do you have now with your Seplos setup?
@@OffGridGarageAustralia I acquired 2 empty Seplos 280 racks 3 months ago, and I am waiting for the 3rd rack in which I will install the BMS Bt. (16S 304 EVE, 16S 310 CATL and 16S 280 CATL for the 3rd). dark and cloudy days 5 days out of 7, the almost 900Ah will not be too much here in Normandy!
Sounds like you need a Spat out 2 buddy. What a nightmare. Chin up. 👊🏾
I had two that night 😁
@@OffGridGarageAustralia 🤣🤣🍺🍺
ao this is exactly the reason seplos dont recomment mixing batteries.
i believe also the reason they came out with the 10e bms.
if using only 10e bms'es there's no need for dipswitching anymore.
do have to agree with you though, the not being able to access the master when setting can is also on of my biggest frustrations.
i wish they would solve this in their software, as that is not able to deal with id 0 , or so it seems
Sometimes only listen, makes live easyer. And if i loose conection, my Victron System go in „low Batterie“ and i have a Alarm.
Even without mixing the monitoring problem is the same
@@patrickmartin4482 well, dont know yet.
so far have only 1 10e ( 280 kit) and 1 10c ( 280 kit too) , second 280 10e is still enroute.
then again, monitoring software is used rarely ( unless constantly tinkering) , cell monitoring i have through Solar Assistant, which is also connected to my inverters
As I explained in this and previous videos, I'm testing a not recommended setup with different capacities here.
I'm still keen to find out if the master just multiplies its own capacity by the amount of connected batteries instead of reading the actual single capacities. It almost seems like it.
Does the software only connect via RS485, or can you also program the BMSses via a CAN adapter on your PC?
That won't be possible.
Andy, I just got the Seplos 200 amp BMS. And I’m in need of how to configure mine. Are you willing to share your configuration of the 280aH setup, you have? I will implement it into my 310aH CATL batteries, via the EEL battery box, thru the Bluetooth access
I haven't configured mine yet as I'm still testing. Still not sure what some of the settings actually do...
Have you any feedback from Seplos? I’m getting nothing…….! 😡
Andy, Did you notice that the top battery immediately started charging once you disabled the CAN on it? Can you please try something? Put the config back as you had it, connect the CAN via the 135Ah battery as it was to see if the charging stops again, if it does disable the DVCC on the Cerbo and see if the battery starts charging again once the DVCC is disabled, I still think that there is a CAN issue between at least the smaller battery and the DVCC on the Cerbo, I could be wrong but would be nice to see if this makes a difference.... It could be that that particular BMS firmware is just not communicating properly with the CAN to the Cerbo if the DVCC is on.. I have my battery packs connected to a remote PC running the software and VNC, with this I am able to log in remotely to my packs and monitor them at the cell level. Good luck.
I believe it turns on DVCC by default when using a smart BMS. I remember seeing a comment in the DVCC section and the switch was greyed out. I'll test again...
"I have a dream this afternoom, to have an active (2A mini) BMS with working MODBUS/CANBUS communication".... I am a dreamer, I know .... Anyway, thx you I will continue with my JKBMS.... Especially when you can now monitor & control them via BT and a ESP32 and send everything where you want (HomeAssistant, VenusOS, etc...)
You use the ESP to connect via BT to the JK and forward these info to VenusOS? What if you have several JKs though?
@@OffGridGarageAustralia Personally I don't use VenusOS (I don't have any victron, when my chinese voltronic will die, I will), but since VenusOS accept any MQTT informations, it's a piece of cake to do the dialog between the ESP32 & VenusOS (via WiFi or Ethernet). Yes by ESP32-BT, you can control several JKBMS in the same time. You just need to give their respective MAC adresses in the code and vollà. To resume, the ESP32 can monitor&control several JKBMS, have an independent Webserver (in case) and communicate with VenusOS via MQTT. FYI, if you run HomeAssistant (as I do), you even don't need the MQTT layer.
Hey Andy, I Noticed @ 4:25 That You Have Both Wires From Charge Controller To Batteries Going To Top Battery? 🤔 Try To Remove The Right Positive Lead & Move It Straight Down To The Bottom Battery Right Positive Where You Have The Empty Lug + In Reverse? Try The Same In Opposite With The Negative Down With Positive Up To See Ifin It Makes Any Difference? It's Worth The Try To See Ifin The Current Is Then Forced Thru Both Batteries More Than One Just Leetching Off The Other?? Thanks 😁😎
Thanks. That will not make a difference in this case. As I said, it's just a temporary setup and all batteries will be cabled individually to the Lynx Power In eventually.
The batteries will always be on the same voltage except when having very large currents. Then, and only then, a different cabling would be beneficial.
_IF_ you have a Bluetooth BMS, and want access to a remote site via an onsite PC,.maybe a Bluetooth to serial adapter could achieve this (eg IRXON BT578 or BT580 - supporting BLE and SPP), assuming the BT BMS and the PC software allows such access. Maybe something you could try Andy. Still, it's not great if you have the older BMS.
I wonder if you can't just use rs485 to a Pi and do CAN to the victron system.
Of course you need to convert protocols and keep state.
Also, is the SEPLOS BMS actually controlling the secondary battery, or are you just connecting to an rs485 bus and addressing the different devices on the bus? Because in that case I would connect them both to the CAN as the victron system is a lot smarter.
That sounds complicated. I guess, we can have only one protocol setup with these BMSes at a time.
I don't think the master BMS is actually controlling the slave BMSes. It's more to get the data in one place and report to the Victron system.
Have your tried paralleling with bus bars instead of daisy chaining? I haven't watched your bus bar video yet but I know daisy chaining parallel can cause this uneven load behaviors.
The cabling is not a problem.
I still think that if you connect battery packs of different capacities together you're going to have problems, regardless of the equipment. They may be different than the problems you're currently concerned with the SEPLOS, but they will be just as bad if not worse. Would you assemble a battery pack using different capacity batteries? Because this is EXACTLY the same thing, and it's a bad idea. Even when you're using batteries with identical ratings, you'll get the best results by matching the cells after doing capacity testing on each cell, and try to get them all to the same SOC and voltage before assembling them.
I also don't think this particular issue of the master pack settings is as big a deal as you're making it out. Generally a BMS is going to be set once, and maybe make some changes in the initial setup period if you forget something, but then it will never be accessed again. Many BMSes in battery packs that you buy preassembled don't even have the possibility of changing any settings. You're just permanently stuck with however they came from the factory.
I'm not saying your concerns aren't valid or that SEPLOS shouldn't address them. But I do think you're losing sight of the fact that you are all about comprehensive testing and catching edge cases that the average person will never experience.
It won't be if he connects the main +ve and -ve to different packs, they will self balance.
You should watch some of the video where he has explored and disproved this already .
Not a problem to connect different battery sizes together. Also not a matter on how you connect the batteries.
Yeah a new video!
Now I don't have a seplos, but familiar with 485. Can't you just move the id numbers of all the packs up by one. Ie the first pack is now 1 not 0 and 2 not 1.... Then there would be a valid dip switch setti g?
If you have CAN active you must have address 00 in the system. Otherwise it won't work.
It won't as the combination 10001000 does not exist for CAN communication. CAN uses the last 4 bits of the DIP switch only. The first 4 need to be 0.
Andy, you see my frustration too. I have the Seplos 48200-BT BMS, and I can’t figure out 20% of the registers! 🤬
It's insane. I play around with it almost every day and are finding more and more quirks. Not happy with that.
@@OffGridGarageAustralia just a side note: we have a son, in Townsville, a missionary (married an Aussie- now with three kids), we’ve been there 3-times sin the last ten yrs…….
@@jimpowell9205 That around 1500km from me. Just down the road, as they are saying here.
Isn’t there a option to run a Android OS as a virtual machine and use a Bluetooth dongle to connect on remote sites?!?
If there is no windows/Linux/MacOS App for the seplos Bluetooth function?
Still not nice but a option.
Oh, what a workaround... but yeah, would be possible, I guess...
Indeed we can feel a lot of frustration in your video, many people were waiting for your opinion on this system and you are probably afraid to disappoint them, I am disappointed, but I do not hold you responsible for the design flaws of SEPLOS.
Thank you for your honesty and transparency, these are 2 assets that guarantee my loyalty.
I'm still working with them, but their design makes less and less sense to me.
nice video, thanks. you can test JK-BMS with CAN-Bus DIY adapter... then you can add to victron.
But I can add only one JK to Victron, not multiple! I have tested this in a previous video here on the channel already and it works. For one battery bank only though.
@@OffGridGarageAustralia with DIY addon CAN Bus for JK?
Can you do video on adding an active balancer to the Seplos 10E BMS ?
I think I did: th-cam.com/video/uuB3qwjh994/w-d-xo.html
Another question - when you call up the BMS in the Victron Remote Console, there is a history - this shows the charged and discharged energy - how can this be reset?
This can be reset in the Smart Shunt. Connected via Victron Connect to reset the stats.
@@OffGridGarageAustralia I don't use a smart shunt in this system - here the Seplos BMS is the only battery monitor and sends the values to the Cerbo. Unfortunately I haven't found a reset function for this on the Seplos or anywhere else?
Hi Andy,
I wonder,
1. why you don't connect the both batteries in "Tichelmann-Verschaltung": the plus to the first set and the minus to the last set to equalize the voltage drops for all sets.
2. why you didnt try to set the RS485 to "1" and "2" instead of "0" and "1"? As the Can bus does not see the "0" Set, but the "1" Set and "2" Set, it could work.
Anyhow - the BMS is only supervising, what happens with the battery sets - but they are absolutely not control on analoque basis the currants of the sets. The BMS can only shut down (off/off) of the controlled set in case of over- or under- voltage.
It is your responsibility by correct wiring according 1. to give both sets the chance to run with equal cell voltages.
I think, you have to equalize both sets again by calibrating them each by each and afterwards you can run them together
Sometimes, I think, you are kidding us...
Thanks, but as I said before, this is not the final cabling and just a temporary connection of the batteries.
@@OffGridGarageAustralia In case, the temporary connection causes main problems, it is a principle wrong connection - and the temporary connection in this case can be easily corrected to a working one.
It looks like you're making these mistakes on purpose??? I know you know all this better and have discussed it in previous videos.
Stupid question - why not connect the RS486 to Cerbo directly or connect both BMSs to CAN?
Could work! If he can set the TOP battery to be CAN1 and RS485 SLAVE1 and the BOTTOM battery to be CAN2 and RS485 SLAVE2 and his COMPUTER be RS485 MASTER. Should be possible, arent the first 4 Dipswitches for rs485 and the followoing (5 and up) for CAN adresses?
Because we need a master battery collecting all data from the slave batteries. If you connect via RS485, you end up with 2 single batteries in VenusOS of which you can pick one to the be battery monitor (smart shunt). The other battery will be ignored.
Is the small pack BMS 48100-10C pcbV14 still running on FW V2.8 specific Victron/SMA version or also updated to the V2.9 general version?
In a week i will catchup with testing to this point (Deye with 48200-10E pcbV16 + 3 slaves 48100-10C pcbV14 all on FW V2.9)
Please share your experiences with this setup
@@deonbezuidenhout1304 I will do, but need to wait until weekend.
FW 2.8 is necessary to make it work with Victron system. Not sure what changes 2.9 brings as they don't publish change logs.
@@OffGridGarageAustralia Technical information is rare, I only got from seplos the "BMS can get confused".
I'm going to run the combo anyway with a Deye 12k SG04PL3-EU, 48200-10E as master with three 48100-10C V2.9 with daily one cycle, let's see how that goes.
A 4th 48100-10C isn't a solution for me to charge the EVE LF280k cells (10%>90/95%) in mostly 2 hours daily i have.
time for Seplos to fix those troubles, send a technician and dont leave till its fixed, their reputation is on a small wire now hopefully they understand the customer is the king
I am in contact with them and discussing the issues. Progress is slow though...
JBD make a BMS with CAN & RS485 now. It's brilliant. it runs pylon protocol so it works with lots of inverters. They currently only make a 100A one but are looking into making 150A and 200A. There are also many different other manufactures which make BMS's which support CAN/RS485 plus different communication protocols...
Any info or links on this BMS? Can you have multiple in parallel?
I have one JBD bms with rs485.
The port is a 4 pin regular socket.
How do I convert to rj45?
Thanks
They work only for one battery. If you have several banks, you cannot make them communicate the combined data to an inverter or VenusOS. Hence, I'm testing the Seplos so thoroughly. Alternative would be the Batrium for a lot of $$$
Hi Any, you are forgetting that you can access the BMS over canbus in canbus mod.
the rs485 connection problem is the limitation of modbus protocol, unless they switch a proprietary protocol there is nothing they can do about that.
No idea how this would work. And if so, it would only give us access to the master, I believe and we need to use the Battery Monitor for the other BMSes?
Heya, as I'm not a victron user I'm not gone go with the seplos bms's just the jb bms would be goood
Did you try turning both BMS off and back on after changing DIP settings? You know it's a valid troubleshooting method. A lot of things read settings at boot and cache that somewhere. I don't see how this could not be a thing here.
When all else fails…reboot!
Yes, both have been restarted multiple times. In fact you just need to restart the master, the slave will follow...
Yes i agree it is a messy design flaw. SEPLOS should have installed 2x CAN ports per unit, forget about RS485 communication between units and just daisy chain any battery units to the same CAN bus to other systems, like the Victron. They can include a LAN port in additional to Bluetooth connectivity. This would be very similar to how Victron set up theirs. Neat and tidy, no more messing up with DIP switches.
The network topology should either be a star network or daisy-chained network.
That is a great idea but I'm afraid it's too late for Seplos to do that...
@@OffGridGarageAustralia I believe your feedback represents a very reasonable expectation from a typical user and is a very good use case. SEPLOS should take all your advice and feedback very seriously.
Certainly functionality is important, but usability is also another important aspect, especially for higher voltage battery systems involved many cells connected in series. It is important to keep monitoring and spot any potential issues or signs of weakest link.
When it comes to systems integration, it is all about simplicity, reliability and wide compatibility. Learning from already established brands such as Victron is a great starting point. Look at what they are doing and understanding the rationale behind their decisions. Innovations are good, but only if it improves existing standards... certainly not just for the sake of innovation.
Let's see if SEPLOS would incorporate your feedback in their next release of products. 😬👍
If SEPLOS doesn't offer a reasonable solution, a work around might be to purchase just a BMS board but connected no batteries. Make that unit 0. Then attach your first battery as unit 1 and the larger one as unit 2 😂👌
If you replaced both seplos BMS with JK BMS, would you be able to see both batteries in the Venus OS???
The reason I ask is because I am running the JK BMS on one set of 270Ah batteries and I'm thinking about getting another set but at the moment I only have Bluetooth access to the JK BMS and would like to be able to access the JK BMS over the internet from anywhere else around the world....
Also, I was thinking what if you set one seplos BMS to pack one and the other to pack two? But from what I'm seeing.... It probably won't fix the communication issues....
No, you would see only one battery. That is exactly the problem. You can make only one BMS the Battery Monitor in your system. Hence the communication between the single packs and the master BMS is the consolidated battery monitor.
@@OffGridGarageAustralia I get what you want from a BMS, and I also believe that should be standard... But right now, I would be happy if the one BMS could report for the total capacity....
I'm happy with JK BMS, it just works but I only have one set of 270Ah worth of cells and I'm wondering if when I get a second set of cells, should I also get another JK BMS or should I just parallel them to what is already there?
Because at the moment, the amount of current that the 3kw xing ping inverter (exactly the same as your one) is drawing from the battery, isn't coming anywhere near the limit of the JK BMS....
Although.... I have yet to connect my main fridge in the house to it, I was running the solar system on 3 48V strings of 12V 8Ah Lifepo4 batteries.. they have internal BMS's and when the fridge would fire up, the induction spike would kill a BMS here or there.... I have seen over 3kw spikes when the fridge would fire up but you have to watch the app constantly (you are not the only one who has done that LoL) and it never shows up in the history!
If I'm drawing 3.5kw from the inverter and the fridge fires up, the Xin Ping inverter goes into protection and shuts down.... It's also annoying that the inverter just sits there beeping! It won't turn back on even if the required voltage is there!!!!
I don't know, somehow I feel that if this was Japanese made, it would function as expected!
I have seen where people have a shop and are selling something that they have no idea what it is..... That's like a factory making solar equipment but for some reason don't know what they are making and as a result, don't have a research and development department..... They probably have a "let the customer figure it out" department!!!
weird. I know you need to have all the BMS connected in order to see them in cerbo, but maybe just use 2 individual connections and do not let them to talk with each other? It seems, that when they talk with each other, the charge gets wrongly distributed. I do not know seplos, but is master BMS only with pack 0? Alternatively would it not work if you configure one as Pack1 and another as Pack2 and not use Pack0 at all?
That won't work s the Cerbo can look at only one battery monitor device, which makes perfect sense. So only one master BMS can report all the combined data to the Cerbo.
So this is the second video I believe that shows Andy facing the same "issue" with the dip switch and the master visibility...
Is this a bad design or a bug? I don't think so.
1- Victron reporting 2x master capacity instead of master (280A) + slave (135A). Is this issue on seplos or victron side?
2- Victron reporting 411A available capacity. Well, that's close enough (280+135=415A), that may well be a symptom that a full charge/discharge cycle is needed.
3- Master is not accesible. You already came up with this in another video. Is it a flaw? Well it is what it is, if your inverter is CAN, then the master need to be configured as CAN and won't show up in the battery monitor app (as it uses rs485). I agree this is rather quirky as both master / slave seem to talk via RS485 but master doesn't show up in the app. To be honest I've had 2 batteries paralleled for 2 months now and both have been going neck to neck ( SOC delta of +- 0.5 -1 %) since, reliably to the point that I stopped monitoring them as they just work fine. Maybe once avery second week I take a look on their screens but that's it, I don't have the need to access to cells voltage / temp in real time, I leave it to the BMS that has proven so far to do it's job.
I believe cerbo is able to talk rs485 meaning that you could ditch the CAN and use the RS485 only, that in theory should allow the master to show up in the app along with all slaves right?
4) Seplos is been clear since the begining re/ your setup, i.e. diff BMS' that is yet to be tested, they haven't guaranteed full compatibility. However I do believe it should work. From your video&comments it appears that it actually works, it looks like a battery went rogue due to a bad dip switch configuration. The master is not visible, Yeap but otherwise both batteries SOC should go hand in hand.
I guess in summary I hear you, you're frustrated, this isn't a perfect product and may not be for everyone, however other brands are not exempt of flaws or quirks, for instance Pylontech using rs232 to monitor the battery (so in order to make things work you need can/rs485 but rs233) and I don't think it is fair to put the blame entirely on Seplos. The product is positioned as DIY, the documentation covers everything
Thanks Alex. I know, I'm testing here as always, and it is 'not recommended' by Seplos to parallel these two batteries, true. Some people have either batteries at home and consider upgrading. Should it work if buy another battery from them with a different BMS? Maybe it works, maybe not.
I know, I'm overthinking a lot here and I'm very desperate to make it work. It seems the limitation is to parallel batteries with different capacities. The software is not capable of getting this right. But again, why not making a better FW for these BMS and make it work. It's not a hardware limitation but only software. They have this great feature of being able to upgrade all their BMS with new FW easily but are not utilising it.
The documentation is far from perfect and does not cover everything, I'm afraid. Some others said, the product is actually aiming for more professional setups and installations and using true A-grade batteries (hence, the very small balance current).
You can turn it as you want it, but the product is great but the features not utilised enough.
For pylontech they recommend to use the newest battery/bms for can communication. maybe its the same case here and the new bms shoule be the can "master" for all of them.
Does Pylontech have an active balancer inside?
Same with Seplos, they say only to parallel same batteries together. I'm testing a non-recommended setup as I explained in the video.
Is there a reason you can't connect both batteries directly to the victron system instead of having one go through the other?
Because the batteries are not Victron & are third party....why would another company know how to control a supported product?!?!
@@patricklyons7683 If you read the video description, what Andy is doing is connecting the two Seplos BMSs together (over RS485) and then one BMS is connected to the Vicron Cerbo GX (over CAN bus). So one of the batteries is talking to the Victron already, and having worked in a similar industry in the past, it is likely protocols have been shared, published, reverse engineered or are standards.
My question is - why use the communications between the batteries and then to the Cerbo? What was the perceived gain over just connecting each straight to the Cerbo? I'm sure there's a reason to do it this way, I just don't know enough to guess what it is.
They would only show as two separate batteries in Victron. You can then select one of them to be the Battery Monitor for the whole system (like the smart shunt). The other battery would be totally ignored. That's why it will never work with JBP, JK or others...
How about both batteries in CAN mode? No RS485.
Won't work. You can only have one CAN battery shown in the system. You could decide which one is showing, the other one would be ignored.
A lot of battery BMS suppliers says NOT to use address 0 as it is supposed to be reserved for the charger/inverter connected. Use address 1 and 2, not 0 and 1.
Well, we're not connecting to an inverter here but to the VenusOS.
I read this too, but as we have seen, address 0 is good for Pack00 in the software and works.
i did tell you about the seplos bms not working with bluetooth software pc cam i call them on video call and showed seplos how the bms not good thank you
just saw a video from Keshee Battery. Looks similar DIY kit as Seplos', but their BMS has bluetooth function.
So has the Seplos BMS.
My question..
Why use the 485 at all.
If both are CAN to the Cerbo, and not linked together by 485 do you get to talk to them?
May be for 485 the address has to be something.
Sticking with my Rec BMSs for now.
In the Cerbo, you could only specify one of the connected BMSes as the battery monitor. All others would be ignored.
The REC seems good but very expensive.
@@OffGridGarageAustralia
Thanks Andy and keep up the good work!
Yes this is true. BUT BUT... if the batteries are as as closely matched as possible..
And well paralleled their charging and discharging set points should be effectively identical. Thus the one battery tracked is not a problem.
I added a simple Node Red macro on Venus OS Larger to checks that my multiple batteries are closely in sync and shuts down the system if there is a problem.
I am wondering if the Venus support for singular battery might change soon. In the boat world NMEA E13 calls for multiple lithium batteries that have to be monitored.
--
I believe that the RS485 comms protocol that Seplos are using only mentions voltage, current and SOC. Because no capacity is communicated the master battery can only guess that each of the battery capacities is the same and multiplies it's own capacity by the 2 SOC values.
This is clearly a bad idea, but it is why Seplos say "only one type of battery"
Correcting my words..
Correcting myself the Seplos RS485 messages contain 2Bytes of battery capacity at a 0.01Ah resolution as well as capacity remaining and SOC,
It does appear to output it based on a sample of one BMS. and the Seplos protocol document.. file:///home/brian/Downloads/SEPLOS%20BMS%20Communication%20Protocol_V2.0.pdf
Can it be a problem that you use a 10C and a 10E BMS together?
Then why would the company confirm that it’s not possible?
@tujusprojects8770 I thought Seplos only mentioned that they do not advise to use different capacities in parallel? Otherwise, they could also tell Andy to stop testing because it will create problem a and b when combining these two batteries.
Maybe Andy will test again with his third Seplos battery parallel with one of these (matching)..?
No .. I have old and new running, same problem without mixing
Seplos is not recommending using different capacities together. The different BMS should be fine.
Sorry to hear you're having a frustrating time of things, Andy. I would have hoped that Seplos would take feedback on the parameter names; misleading names befuddle the debugging process.
I'm flip-flopping on the idea of multiple BMS-es communicating with the charge/discharge system. More than one battery is difficult as there are multiple ways of getting them into different states of charge; the BMS making charge/discharge decisions, fuses could blow, breakers trip or even simple stuff like different cable lengths or loose connections. One would need a master BMS smart enough to detect these kinds of situations, and I think you're a bit tired of the smart in BMS. It does make me wonder how Pylontech does it ...
The Seplos system is not there yet. Even using the same batteries and BMSes, some parameters are still hard to identify. Controlling the whole system is hard.
It is a shame that the users have to reverse engineer the issues and problems with these BMSs. Hopefully Seplos gets all of the comments and understands what is happening, then maybe more people will buy into these battery kits. However, currently it doesn't seem like the two BMSs are compatible with each other and it doesn't look like you can do anything about it without Seplos helping. Maybe a firmware update, or even a replacement BMS will solve most of the problems. But, even with a firmware update or replacement BMS it looks like you'll still have issues with the two different battery sizes unless they rewrite the software.
The only plus for Seplos is their casing and the BMS talking to Growatt inverters.
The downsides are numerous.
I'll wait a bit longer...
Edit: btw Andy, never use your fingers on dips witches, use a tool instead ... Like a sledgehammer...
I like my fingers in Dip Witches . . .
And take a tooth pick for dipswitches!
😂🤣
Well, don't forget, I'm testing a 'non recommended' constellation here.
Very sad day Andy
I think it may be a little beyond my capabilities, but it would be great to write a script that could take input from multiple CANBUS/RS485 BMS, and then collate the information and forward the traffic to the Cerbo.
Or just use node red...
@Jason Devine I hadn't considered NodeRed as an option.
I guess that if it can access Hardware interfaces it could be used. Could probably push the combined BMS data directly onto the dbus.
@@gavinnoname1424 yeh in another project I use it accessing multiple serial ports through USB and then process the data. Can't see any reason we can't grab multiple serial and or rs485 or can bus and then combine totals ETc before presenting to victron app.
Your master is Pack 0. You should tick “target config” and type 0 then only click pack 01 on the below list of packs. You should see them both.
I thought I tried that but could not get it to work. Have you tested it?
I'll try again tonight.
@@OffGridGarageAustralia Yes Andy I see them both I have seplos bms too.
@@jasonluna333 What dip switch settings do you have?
My dips are 5 on host/master, 1 on slave. When trying to connect with battery monitor by selecting pack 1 and target config "0" it only connects to pack 01. I have two seplos 280a uprights any suggestions?
Well Andy, once again we discover technology is rarely Plug and Play, but rather "Plug and Pray"
Has Andy (or anyone) tried to switch DIP1 (for 485) and DIP5 (for CAN) ON at the master (at the same time!) and activate the slave(s) on (CAN) ID 2 (and higher). Maybe this works!?
Yes, tried that in one of the last videos. Not good.
Maybe you’re in need of a discharge, relax, nap, and get recuperated for a new day. Remember that you have a pool. If you’re able to connect two like size batteries 🔋 then what would it be? Happy New Year 🎆
Two the same batteries will just work. I'm testing this non-recommended setup though to see what happens. I'm almost there...
Now i know why i use Victron only. More prisey but all works. ;-)
For sure... do you use their batteries as well?
For this to be a good solution you need to be able to communicate with all the BMSs and you need to be able to configure different batteries in parallel for future add-on can't expect people to get stuck with legacy cells wen upgrading there system in the future.
For the BT just use a dongle on a USB extension cable on a PC or pi but to access both batteries due to their shit its lookin like ya need another RS485 adapter to run it separately
Hi Andy, the total Ah should be an increment of both values of both batteries. If the total is wrong check the total Ah per pack. Maybe it is wrong now for the smaller battery (overwritten by mistake?). That also explains the low SOC it is dispaying. It will correct itself after full discharge and charge cycle indeed,
I checked both BMS and settings are correct. I believe, the master BMS just multiplies its own capacity depending on how many slaves are connected. Hence, we saw 560Ah (2x280) and 270Ah (2x135Ah) with the other battery being the slave. There is no real communication in this regards from what I can see...
@@OffGridGarageAustralia that is than different in this E bms. My two C bmses just add both different values together.
(Nebenbemerkung: Ich würde die Bohrungen der Plexiabdeckungen der 3er-Batterie auf Langlöcher erweitern [alle zentrumsorientiert: Mitten waagerecht/senkrecht, Ecken diagonal]. Dann würde man die offensichtliche Spannung wg. Tenoperaturschwankungen vermeiden.)
Andy, would it not be better to remove this BMS and add a more capable/compatible one? Seems the final verdict is: Buy the case, not the BMS.
I'm not that far yet to really giving up on that. There must be a way....
Yes my thoughts as well. The case design is good - all batteries held securely in place. Looks smart and clean. The BMS.....not so much.
Coming soon to an ALI E-Baba near you;
The all new SEPLOS MINI FORKLIFT.
Hahaha, great!
i have 3 BT JBDs, reading them with esp32 24/7 no problems
Interesting. Connected how to the ESP32? RS485?
🎉
Batterie V3 is probably use the case of seplos and modify it to use the JK bms...
I really want to make it work.
You can schedule a remote connection with Alan from Seplos to figureout the issue. I did it once and he helpef me but not for this CAN limitation that I'm discovering with you.
I'm in contact with him. I've got the feeling, the translation swallows a lot of information and causes misunderstandings. It's not that easy...
@@OffGridGarageAustralia Andy, there are LOTS of Chinese in Australia. Might it work to find someone fluent in Chinee/English to do the talking to the techs at Seplos so nothing is lost in translation?
Oups pour SEPLOS ! j'éspère que la prochaine vidéo il y aurais une réaction de leur service...
Yes weekend! With nothing further to do!
Argh, what?????
@@OffGridGarageAustralia LOL!
It was for me a no go when I saw the mess of the naming. They had until today enough time to make it right. But nothing.
Wait there is more fundamental stuff which is not designed correctly.
It is not perfect at all...but if you have same BMS and cells, I just connected it in parallel, set the DIP-switches correctly to RS485 and updated the firmware...than back to CAN-Communication.
And it just works without changing any settings of the BMS😅
How about a factory reset of settings and see if it works better?
Thanks Raphael. How do you control single cells in your master pack though if using CAN? Are you running the V2.8 or V2.9 on your system?
Is there an option for a factory reset for the settings? I haven't found one.
@@OffGridGarageAustralia By Default, the option "Take the initiative current limiting charging" is switched off, when my 150A BMS got shipped with V2.7. I saved the settings of the 48150-1101-10C Version, when it came out of the box. Maybe you have still a untouched version of the BMS around. Or you can ask Seplos for the default parameter file.
You can save the setting, when you connect to the BMS and press "Upload Parameter". The window "Parameter Manage" opens and you can press "Save as" and save it as a XML-File.
Than you can go to the BMS, that you want to overrite and klick on "Load parameter". Than in the "Parameter Manage"-Window press "Set all".
Let me know, if it works. I could also send you the parameter settings via E-Mail, in case you need them.
Sadly, I do not have acess to my two parallel 280K batteries with the 200A BMS until March...so I can't do furter testing right now.