Im building a 560ah 24 volt battery with the eve grade a cells. The ones ive ordered have the dual bolt holes in each terminal. Ive ordered 2 jkbms with 2 amp active balancers. Hopeit all works well. I ha e been running my camper with 24 leaf modules at 24 volts for about a year but the addition of the lifepo4 should power the camper and the leaf batteries will only power the air-conditioning now. The ac is a 38 seer minisplit and 220 volt. Its ran by a sungold power 110v/220v split phase inverter. The rest of the camper is ran by a 3000 watt all in one inverter solar charge controller and i have 1800 watts of panels. The ac and the sungold power with leaf cells has their own 100 amp charge controller and im still needing to buy more solar panels for that side of the system. Once i install the lifepo4 it will be 2 seperate systems as to now its just one system by sharing the leaf batteries. This off grid lifestyle is trully amazing and i wish id gotten started in this journey years ago. Thanks for the videos it helps a lot of us new to this
@@manwithfewwords3954 woe that's a lot of battery storage. You must have some high amp draw appliances or maybe just wanting several days of reserve power. I was able to be off grid with just my 24 leaf modules and 1800 watts of solar but I added the minisplit and even tho it barely uses any power it still made it where I needed more storage power. I got the 16 eve cells and this should be enough for me to be off grid while I'm home in the holiday rambler. My real home is in this semi truck lol. I spend a minimum of 26 days a month in the truck but the 4 days I get to be home I'm off grid
@@syleishere I've never heard of those big of cells but they sound great. I just ordered another batch of the 280 eve cells. I want to eventually replace my leaf power wall with lifepo4 but it's just so expensive. I've spent 5 grand this month on batteries and the wife is pissed lol... she just don't understand that living off grid don't mean it's free
I'm almost done top balancing my prismatic cells, I'm planning to connect it 16s and hoping the multimeter method in waking up my JK BMS works. Cross fingers :) thanks for this!
simple hay ,love it ,,,,lol think ill order 8 more cells soon build a second pack , can never have to much storage lol gotta love this tec ,these cells are so good ,
Yes I would have saved on wiring and bms. I started out with 2 Victron Multiplus ii 24/5000 connected in parallel so I'm stuck with it,since everything is running smoothly I decided to stick with it.
Connect all Positive together, and all Negative together using 2 busbars. Watch the video below, all the parts are listed in the comments section. th-cam.com/video/FZFE4ImVzF0/w-d-xo.htmlsi=ZMMUOd5a805YJQZF
@@manwithfewwords3954 Thank you dear. This is to connect cells. I want to know if I have 3 or 4 48v 100ah battery packs with bms. how to connect them parallel to increase backup? You also do that in your setup.
Hello Manwithfewwords, all the positive and negative cables, from your LFP battery, comes together in a red and black connection block. Where did you buy it please, I looked on Aliexpress and can't find it. Regards. Willy
Manwithfewwords, I have not clearly defined my question. From each pack of 8 cells, the + goes to a switch and then to a box. That's where the 4 cables come together to go to the inverter - I think. Likewise with the -. It's these "boxes" I'm talking about. You have a very clear installation. Regards. Willy.
Hello I really like your setup planning to build the same, Can i parallel the bms directly? Although the description says you must use a fast class T fuse withe each bms for parallel.
I see you only use 1 of 2 terminals on the bms for your cables. Is there any reason to use both terminals?. Is it ok to use only 1 of the 2 terminals on each side for a 16s battery?
I'm running 8 banks in parallel so a single 2awg cable is enough for my application. If you use a smaller cable 6awg for example,you would need 2 or more cables running in tandem using those 2 terminals.
Yes you do, it allow individual cell monitoring so each 8S pack will require its own BMS. 2P8S will only let you/your BMS monitor pairs of cells but will only require 1 BMS.
Hello wonderfull video. I bought the same bms i d like to connect with a computer with rs485 and can. Did you do ? could do a video about rs485 connexion ? Thanks.
How do you compute what size of wire to be used? For example i have a bms rated for 130A 24v117ah 7s 3.7v per cell. What would be the recommended size of the wire if i use both terminal?
@@manwithfewwords3954 I ordered that too, 2 weeks ago, from Hankzore store, it's on the way from China. It's the one with heat can function. I also took the small display ans RS485 adaptor. I think this new model comes directly with push button and there is no need for aditional voltage, but I'm not 100% sure..
Hello. I also have everything as seen in the video 2x 24v. It's just that one bms is 120A and the other 60A. I set charge / discharge 60A on both, but I notice that from the bank with the 120A bms it charge / discharge twice as many amperes. I don't think this is normal, it is ? Thanks.
I started off with 2 12V pre build batteries connected in series. When I started to build my own I decided to stick with 24v because all my Victron inverters and chargers are 24V.
Hey man can you help me out please, i dropped a sapanner on my terminals and my battery went strait to 8v and wont do anything. Can you tell me where to get a bms , because it looks like the one you are using. I can not afford another battery and need to try fix it myself. Thank you kindly if you help me
@@thestoicloser link for bms a.aliexpress.com/_mOXjLDI You should do a capacity test on all the cells to make sure they are not damaged from the short. Insulate you tools with tape before you work on the batteries.
Does this BMS balance the batteries (type: LiFePO4) well? How long have you been using it? Are there any problems with this BMS? I have brand new 280Ah batteries (16 pcs), will this 200A bms type B2A24S20P work well with these 280Ah Lifepo4 batteries?
I have jk bms 200amp, it worked fine for 30 mins. Then automatically turned off. I tried to wake up as usual with push button but not starting. Tried with 9v battery not starting, also tried with diod mode , no result. I can see little light in push button switch if i hold it. Please help. Cell voltage 53.4v
@@sahilpatildreamer 3.8V? that is way too higher,max voltage per cell should be 3.65V. I think the bms shut down from over voltage protection. I only charge mine to 3.5V per cell.
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Im building a 560ah 24 volt battery with the eve grade a cells. The ones ive ordered have the dual bolt holes in each terminal. Ive ordered 2 jkbms with 2 amp active balancers. Hopeit all works well. I ha e been running my camper with 24 leaf modules at 24 volts for about a year but the addition of the lifepo4 should power the camper and the leaf batteries will only power the air-conditioning now. The ac is a 38 seer minisplit and 220 volt. Its ran by a sungold power 110v/220v split phase inverter. The rest of the camper is ran by a 3000 watt all in one inverter solar charge controller and i have 1800 watts of panels. The ac and the sungold power with leaf cells has their own 100 amp charge controller and im still needing to buy more solar panels for that side of the system. Once i install the lifepo4 it will be 2 seperate systems as to now its just one system by sharing the leaf batteries. This off grid lifestyle is trully amazing and i wish id gotten started in this journey years ago. Thanks for the videos it helps a lot of us new to this
I just bought 4 more JK-B2A8S20P and 32 LF280K cells to build 4 more 24v banks, might be able to go off grid soon.
@@manwithfewwords3954 woe that's a lot of battery storage. You must have some high amp draw appliances or maybe just wanting several days of reserve power. I was able to be off grid with just my 24 leaf modules and 1800 watts of solar but I added the minisplit and even tho it barely uses any power it still made it where I needed more storage power. I got the 16 eve cells and this should be enough for me to be off grid while I'm home in the holiday rambler. My real home is in this semi truck lol. I spend a minimum of 26 days a month in the truck but the 4 days I get to be home I'm off grid
yeah just want some reserve power for rainy days and we can never have enough batteries 😂
You might want to wait till the beginning of 2024 when lf560k batteries come out
@@syleishere I've never heard of those big of cells but they sound great. I just ordered another batch of the 280 eve cells. I want to eventually replace my leaf power wall with lifepo4 but it's just so expensive. I've spent 5 grand this month on batteries and the wife is pissed lol... she just don't understand that living off grid don't mean it's free
I'm almost done top balancing my prismatic cells, I'm planning to connect it 16s and hoping the multimeter method in waking up my JK BMS works. Cross fingers :) thanks for this!
Thanks for watching.
Did the multimeter method work?
Yes video👍 ⚡🔋💡
You have a awesome set up i love it
simple hay ,love it ,,,,lol think ill order 8 more cells soon build a second pack , can never have to much storage lol gotta love this tec ,these cells are so good ,
yeah, I'm running 8 banks on that rack,got no more room for more.😢
Boa Noite !!🌙
Parabéns pelo trabalho de qualidade!!
Que Deus nos abençoe sempre!!
Thank you.
Thanks for replying. I will double check everything again
you're welcome.
very nice build ! may I ask you why 24v and not 48v especially at this system size ? you would have saved on the wiring and half the BMS's...
Yes I would have saved on wiring and bms. I started out with 2 Victron Multiplus ii 24/5000 connected in parallel so I'm stuck with it,since everything is running smoothly I decided to stick with it.
Hello thank you for your video!
Does it need a cable to communicate with the hybrid inverter ?
alex.
Only the Positive and Negative cables are connected to the inverter.
@@manwithfewwords3954 ok thank you
Do those long lead wires come with the JK Bms?
do you mean the balancer wire? yes they came with it.
@@manwithfewwords3954 oh ok thanks
How you do parallel connections among different battery packs? Please make a video on it.
Connect all Positive together, and all Negative together using 2 busbars.
Watch the video below, all the parts are listed in the comments section.
th-cam.com/video/FZFE4ImVzF0/w-d-xo.htmlsi=ZMMUOd5a805YJQZF
@@manwithfewwords3954 Thank you dear. This is to connect cells. I want to know if I have 3 or 4 48v 100ah battery packs with bms. how to connect them parallel to increase backup? You also do that in your setup.
@@parmeetsingh2381 use this busbars a.aliexpress.com/_mM0jy14 to connect the battery pack in parallel.
Hello Manwithfewwords,
all the positive and negative cables, from your LFP battery, comes together in a red and black connection block.
Where did you buy it please, I looked on Aliexpress and can't find it.
Regards.
Willy
They should come with the BMS,ask your seller to send one for you.
Manwithfewwords, I have not clearly defined my question. From each pack of 8 cells, the + goes to a switch and then to a box. That's where the 4 cables come together to go to the inverter - I think. Likewise with the -. It's these "boxes" I'm talking about. You have a very clear installation. Regards. Willy.
ah the busbar, here's the link for Aliexpress
a.aliexpress.com/_mrdOIzW
or search for 300 amp busbar on ebay.
Hello, may I ask you where did you find the so long releasable ties?
You can get them from hardware stores.
how did you turn the bms on at the end? did you just short out b- and p- or do you need to apply an additional 5v on top of the pack voltage?
just short it with the multimeter, no additional 5v needed.
@@manwithfewwords3954 that's bloody awesome. thanks for the tip mate. highly appreciate it 🙏
@@duznt-xiztjus uploaded a short video on how to turn in on. th-cam.com/users/shortsWN1SY9d1X-k?feature=share
Ive seen people just turn it on using the switch when fully connected
Hello
I really like your setup planning to build the same,
Can i parallel the bms directly? Although the description says you must use a fast class T fuse withe each bms for parallel.
I'm running 16 bank in parallel with ANL fuse no problem, watch my video th-cam.com/video/FZFE4ImVzF0/w-d-xo.htmlsi=QQsdDt3z7l177WA2
@@manwithfewwords3954 thanks for the reply, yes I have already watch it
I see you only use 1 of 2 terminals on the bms for your cables. Is there any reason to use both terminals?. Is it ok to use only 1 of the 2 terminals on each side for a 16s battery?
I'm running 8 banks in parallel so a single 2awg cable is enough for my application.
If you use a smaller cable 6awg for example,you would need 2 or more cables running in tandem using those 2 terminals.
Agregaste una Bateria 8s a otros 3 Bancos ya existentes?
Cada uno tiene su JK? Saludos.
All the banks are connected in parallel and each bank have their own bms.
I have 16 banks connected in parallel and all banks have its own JK bms.
th-cam.com/video/FZFE4ImVzF0/w-d-xo.htmlsi=S6hzGMqopjg85ZiH
@@manwithfewwords3954 wow Excelent Job! Thanks!
@@manwithfewwords3954 realmente asombroso tu Trabajo.
Te juro que hare cuando menos 2 Bancos de esos! Saludos desde Mexico!
Do I need 2 BMS’s to make an 8S 2P stack of lithium iron phosphate cells?
Yes you do, it allow individual cell monitoring so each 8S pack will require its own BMS.
2P8S will only let you/your BMS monitor pairs of cells but will only require 1 BMS.
i wonder why you did not do 8S2P?
@@ricardoatilano56 With 8S1P I can monitor every single cell in my system with the JK app.
Cześć. Czy bms odpali bez podłączonego przewodu " P- " . Mam jk b2a24s15p pakiet 8x3.2x280 robię wszystko tak jak ty , tobie wychodzi a mnie nie 😊
yes it should turn on without the P- connected.
@@manwithfewwords3954 ok wszystko działa, nie był podpięty ostatni kabelek b+ do ostatniego ogniwa +
Hello wonderfull video. I bought the same bms i d like to connect with a computer with rs485 and can. Did you do ? could do a video about rs485 connexion ?
Thanks.
Sorry I don't have the rs485 cable.
How do you compute what size of wire to be used? For example i have a bms rated for 130A 24v117ah 7s 3.7v per cell. What would be the recommended size of the wire if i use both terminal?
16mm2 cable if using both terminals or 35mm2 cable using one terminal.
I use this cable calculator here www.fabhabs.com/dc-cable-sizing-calculator
@@manwithfewwords3954 Is it possible to use 4pcs 10awg 2pcs each on both terminal? Im out of wire for now.
I think you should use 3 10awg on each terminal
@@manwithfewwords3954 okay thank you so much
Hi is your bus bar getting very hot when you use it? Is it normal?
What model of the Jk bms is that?
I see you start it with a 9v battery help, so it's not the new model with push on/off button, right?
JK-B2A8S20P, the push button or the screen was optional from Banggood.
@@manwithfewwords3954 I ordered that too, 2 weeks ago, from Hankzore store, it's on the way from China.
It's the one with heat can function.
I also took the small display ans RS485 adaptor.
I think this new model comes directly with push button and there is no need for aditional voltage, but I'm not 100% sure..
@@silviuflorescu6838I'm pretty sure the small screen have the on/off switch built in.
@@manwithfewwords3954 , done.
Thanks!
@@silviuflorescu6838Thanks. I'm using 8 of these jkbms on my battery banks and haven't had any problem with them.
Hello.
I also have everything as seen in the video 2x 24v.
It's just that one bms is 120A and the other 60A. I set charge / discharge 60A on both, but I notice that from the bank with the 120A bms it charge / discharge twice as many amperes.
I don't think this is normal, it is ?
Thanks.
I don't have that problem so not sure. You should be using the same power rating bms on those batteries.
Maybe, but theoretically this shouldn't happen if I set both to max 60A.
Does it discharge equally for you?@@manwithfewwords3954
Using a Meter on What Setting To Start BMS?
On Diode test mode, watch my video here th-cam.com/users/shortsWN1SY9d1X-k?feature=share
why 24v with 8 banks not 48v 4 bank ?
I started off with 2 12V pre build batteries connected in series. When I started to build my own I decided to stick with 24v because all my Victron inverters and chargers are 24V.
@@manwithfewwords3954 yeh me too,, and less likly to kill you at 24v lol
Hey man can you help me out please, i dropped a sapanner on my terminals and my battery went strait to 8v and wont do anything. Can you tell me where to get a bms , because it looks like the one you are using. I can not afford another battery and need to try fix it myself. Thank you kindly if you help me
@@thestoicloser link for bms a.aliexpress.com/_mOXjLDI
You should do a capacity test on all the cells to make sure they are not damaged from the short.
Insulate you tools with tape before you work on the batteries.
Does this BMS balance the batteries (type: LiFePO4) well? How long have you been using it? Are there any problems with this BMS? I have brand new 280Ah batteries (16 pcs), will this 200A bms type B2A24S20P work well with these 280Ah Lifepo4 batteries?
Been using it for about 11 months, some of my banks are 280ah and they all balance very well. Haven't had any problem with any of them yet.
@@manwithfewwords3954 Thanks a lot!
@@manwithfewwords3954📌 Сколько AWG провод ?
I have jk bms 200amp, it worked fine for 30 mins. Then automatically turned off. I tried to wake up as usual with push button but not starting. Tried with 9v battery not starting, also tried with diod mode , no result. I can see little light in push button switch if i hold it. Please help. Cell voltage 53.4v
Have tried connecting a charger to it? When the cells voltage are too low the bms will turn itself off.
@@manwithfewwords3954 cell voltage 3.8v each parallel... Tried charger too
@@sahilpatildreamer 3.8V? that is way too higher,max voltage per cell should be 3.65V. I think the bms shut down from over voltage protection. I only charge mine to 3.5V per cell.
nmc cells full voltage 4.2v nominal 3.8 v charged battery 100% yesterday and drove vehicle 12kms . Then suddenly stopped mid way.
@@sahilpatildreamer ok I thought it was Lifepo4 cells. Check all balance cables are crimp tightly and plugs are connected properly.
Unsecure installation, do not reproduce... Lake of DC breaker, plastic protection on the cells to prevent short circuit , etc...
I've been running this setup over 4 years without any problem, I don't know what you are trying to say.
how to install 8s bms on 16 lifepo4 battery?
You can connect them in 2P8S using 1 BMS but you can only monitor pair of cells not individually.
Thank you very much @@manwithfewwords3954
WHAT THE HELL IS "CHARG PLUGGED/UNPLUGGED"
🤷♂️
how to connect heating?
This is the JK-B2A8S20P it doesn't have heating option.