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Great stuff, can two of the 280ah with JK BMS setups be parallel to another same 280ah setup for 560ah in total. Can the JK BMS handle being paralleled

Y my bms balancing doesnt turn on??

Most of the larger 280 Ah cells need 2.0A balance current.

Cool, I just installed 4 of these today.😊

Is there a way to reset the password?

I've got two Daly BMS 4S LiFePo4, but it comes with two separate modules with separate bluetooth. Do you need to connect to them separately in order to set up Battery protection and Active balancing?

The JK BMS has multiple extra cabels included. There is the on and of switch. Could you explain the rest.? Gps en other one?

You said .08 for cell difference protect but left it at 0.8v I think you meant to say 0.8 volt. Just a simple error in a great video.

I think some information is out of date. Active ballance can play havoc with the battery if it's allowed to running throughout charge curve. It needs to only be ballanc8ng at voltages above 3.4v and cutting off at 3.3v

Could you make a video where you connect a dc-ac inverter to the JK BMS.?

Please can you help me I'm in great trouble regarding my EVE battery

What about the black wire where does it goes

Are you affiliated with lifepo4 Australia? Why have basically the same name?

give pwd in time error with 32700 cell 16s jk bms you have any solution sir

What voltage and amps should you top balance at?

Great instructional video. One suggestion is to wrap electrical tape around the shaft of your socket wrench in case it gets dropped while tightening.

I am confused by this for example for a 48V system you would need 16 3.2 V cells in series. Surely a BMS system will need a pair of wires going to each cell to monitor each cell and control charge and set voltage to each cell.. In the video I dont see a wiring loom that does this. Can someone clarify this for me.

try change password to "qwerty " for JK BMS (qwerty with space at the end). And record video after that :P about how to change the settings of the BMS board with this a such password

Super

Superb video..kudos

good evening friend i can't find charge over current protect and discharge over current protect thank you any help

Hi there, If I made a 24V battery with this BMS, could I add a second 24V battery in series? To make a 48V system with 2 x JK 8S BMS? Thanks

Can you make jk bms to be able to do remote monitoring ? Using uart and esp32 with lan or similar ?

Battery full charge but going on inverter few times later 0 % display & inverter off but after that few times later display more percentage I’m confused & J k bms & battery cell brand new please any one can help me how to setting that 8 cells 24 V 8-24 bms 230A Thanks

pleeaase upgrade your audio

You should do the sound again without you turning away from the mic.

Yes the daly turns on the charge automatically I think when the voltage drops 0.05v per cell or so

Hola: acabo de encontrar su página la cual me parece de las mejores que circulan por la Web. Enhorabuena. Tengo un problema con mi 250A DALY cuando me levanto de la cama por la noche y son las 2 am ó las 4 am, inmediatamente que conecto la bomba del agua, de 1500W, se corta el BMS y nos quedamos sin electricidad. ¿Hay alguna manera de remediar esto? Gracias y un saludo desde España.

Thank you very much for the video... I want to Ask you i have a Daly bms how big and all that is not necessary just it's Li4po 170 amp and 24 volt how Meny volt to charge them whit it it 29.2 volt or??? Best regards David

I have an APC 3000va UPS. I purchased a Daly brand, 15s 150 amp Smart BMS and created a 48-volt LifePo4 battery pack. However, I'm encountering an issue. Normally, the BMS's B- should be connected to the battery, and the P- should be connected to the UPS. But when connected this way, if the city power is cut, the device automatically shuts down. After it shuts down, if I press the button, it turns back on and continues to operate on battery mode. If the power is cut again, the UPS shuts down once more. There's no problem with charging the batteries when the city power is available. When I connect the B- to the UPS and the P- to the battery, as long as the battery is charged, it automatically switches to the battery when the city power goes out. However, in this setup, it does not charge the batteries and even discharges them while the grid is active. So, the UPS is functioning correctly, but it does not charge the batteries. Additionally, there's another odd thing. If I use another BMS from Daly that is not a Smart model, I encounter the same problem; however, if I reverse the connections-connecting B- to the UPS and P- to the battery-the system operates normally and charges the batteries. Can someone please help about this problem

If two cells are connected in parallel then both cells reach the same state of charge. One 4 cell BMS can certainly be used for a 4s2p battery system. When there were no primatic cells yet, many round cells were connected in parallel. These were often used cells with different capacities and different internal resistance. It was just ensured that the parallel pack had approximately the same capacity. Then the p-packs were connected in series and and connected to a BMS. That worked very well back then. But the lithium batteries back then were not as safe as today's LFP batteries.

It is good practice to balance the cells at the top first. This gives the maximum capacity of the battery. With grade A cells, a difference of 1mV can be achieved without a aktive balancer.

Hi. I think you are bit wrong with daly bms, it goes automatically back to charge mos on when voltage goes bit down. I using jk and daly bms already more than year for 48v system and they both work fully automatically for over voltage and under voltage, over current etc. I just check them to see how batteries doing that is it. No manual reset or something else. Just i have one problem with daly bms, few days ago current was almost on the limit of bms and cooling fan kicked in for daly bms and now it newer stops, keeps going, i did reboot, then i turned off and nothing changed, every time when bms boots up it starts running fan on full speed. So i don’t know or it’s software bug, or something went wrong.. but for the rest it’s perfect bms, just cheaper than jk 🤪

Hi Ernest, I think the JK BMS does not have a 4S model so a 12V battery is not an option with them. André in Sydney

Finally !! Thanks for making this videos!!

I use the JK B2A24S20P BMS with 200 Amp charge/discharge, Bluetooth and 2 Amp active balancing and have never top balanced my two 280 AH batteries. all 32 cells are and have been perfectly in balance.

balancing sound left right 50/50 Is It Necessary? only left 100% right 0%

Sorry to say, but one important value is set to bullshit. 'Start Balancing Voltage' you set to 3.2V. At 3.2V the BMS has no clue about the real SoC Value and will tend to make the Balancing even worse! It is widely agreed upon in the community that this value should be at least 3.4, better 3.43...3.45 V. Why? Only above 3.4V the voltage does mean anything in terms of SoC. You are right, the voltage tends to rise quickly if you charge agressively. Put your charge voltage to 3.45 x cellcount and you are fine to go! If the first cell exceeds 3.45V the Balancing will kick in and to the rest while the battery is still mildly charging, but with very low current the balancer can handle. Slight voltage differences above 3.4V don't mean a lot either in terms of SoC. If you have 10mV difference when cells are above 3.45V that means we are talking of less than 0.005C - 0.5% of capacity. But you know at 3.45V at low current the cell is 99.9% full or even more (depending on the actual current).

I made a dumb blunder. I didnt follow this part of the instructions. As a result the system "thought" the capacity of the pile was 30 amp hour not 280 Ah ... I thought this would be calbrated byt the BMS .. I was wrong .... RTFM ... rookie mistake ... Al fixed now nd it seems to be working great .... on it's first cycle and so far Very Happy ..

If you have 2 or more bms the same how do you separate them on your phone

Ernest. Correction : 12:58 Continuous Discharge Current is 0.5C not .05C - André

thank you !!!!

My BMS doesn't have "time smart sleep", is this just a function of certain models?

Hello Ernest, this is really wonderful. Everything is meticulously detailed. I was able to initialize my 2 JKBMS JK-B2A8S-20PC with my 2 12V 280 Amp battery packs, it's great. There is just one small detail, in addition to the Bluetooth on my phone I also have the control screen. (The large model). The batteries are fully charged, but it only shows 78 percent charge. Perhaps this is normal and we will have to wait for the cycles to complete and for the battery and settings to gradually improve. If you could reassure me on this point that would be great. Many thanks again for your video, it’s great. Dominic

Bonjour Ernest, c'est vraiment merveilleux. Tout est minutieusement détaillé. j'ai pu initialiser mes 2 JKBMS JK-B2A8S-20PC avec mes 2 packs de batteries 12V 280 Amp c'est super. iI y a juste un petit détail, en plus du Bluetooth sur mon téléphone j'ai également l'écran de contrôle.(Le grand modèle). Les batteries sont chargées à fond, mais elle n'affiche que 78 pourcent de charge. Peut-être est-ce normal et qu'il va falloir attendre que les cycles se fassent et que la batterie et les réglages s'affinent petit à petit. Si tu pouvais me rassuré sur ce point ça serait super. encore un grand merci à ta vidéo elle est super. Dominique

My bms app keeps on popping message saying "To upgrade devices and report data you need to grant access to File read and Write permission" where can i access to grant the permission

Can the Daly BMS be purchased as say a 16s and configured as an 8s to allow for system expansion?

Ordered one and waiting to arrive, what software version is it?

what software version is it?

I have a 5a active balancer, what do you recommend that it is on constantly or only when the cells are noticeably out of balance?