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Help with JK BMS and Victron (sopuli.xyz)

submitted 6 days ago* (last edited 6 days ago) by [email protected] to c/[email protected]

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Hello. I recently bought an off-grid house with its own solar system. So I'm learning little by little. Right now, I have a Voltronic Axpert VMIII inverter connected to two battery banks. These battery banks have 16 batteries each, totaling 32 batteries (LiFePO4). Each bank has a BMS model JK B2A20S20P. There is no communication between this inverter and the BMS; everything works based on voltages, meaning I have told the inverter what voltage it should have. I am going to upgrade my installation with more panels, a Victron MultiPlus-II 48/10000/140-100 inverter, a Victron Cerbo GX MK2, a VICTRON MPPT 250/100-Tr VE.Can, a VICTRON MPPT 250/70-Tr VE.Can, and some other things that I don't think are important right now. My doubts arise about whether it will be possible to connect the BMS of the battery banks to the Victron system so that it can manage the batteries correctly, or if it is better to buy new BMS that do allow this. What do you think?

If I should buy a new BMS, which one do you recommend for this case?

Thank you very much!

Edit: Added type of batteries Edit2: I'm from Spain

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[–] [email protected] 1 points 6 days ago* (last edited 6 days ago) (1 children)

I don't know what might be best, but I'm curious myself. So I hope someone can help.

I have been doing some reading, and it seems like you'd be giving up a bit of functionality with not having a smart BMS with that victron piece.

For a future-proof, safer, and smarter setup, upgrading to a CANBus- or RS485-enabled BMS that speaks Modbus or Victron CAN protocol is highly recommended. It makes system integration smoother and battery life longer.

I don't know which one would be best though. Maybe something like this? https://overkillsolar.com/

[–] [email protected] 1 points 6 days ago

For a future-proof, safer, and smarter setup, upgrading to a CANBus- or RS485-enabled BMS that speaks Modbus or Victron CAN protocol is highly recommended. It makes system integration smoother and battery life longer.

That's mainly why I was asking, because they have released some new BMS from Jk V19 or something like that, which seem to be able to connect through these protocols. The one I'm using has a connection via Can, but I don't really know what functionality they have. I can buy the V19 ones, but i don't want if it is not necessary to because i can save money.