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Help with JK BMS and Victron (sopuli.xyz)

submitted 4 weeks ago* (last edited 4 weeks ago) by Dequei@sopuli.xyz to c/solardiy@lemmy.world

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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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[–] MysteriousSophon21@lemmy.world 1 points 1 week ago (1 children)

Your current JK B2A20S20P should work fine with the Victron system using a RS485 to USB adapter connected to the Cerbo GX - no need to spend money on new BMSs unles you want the extra features of the V19 series.

[–] Dequei@sopuli.xyz 1 points 1 week ago

We ended not changing the BMSs but we bought an SmartShunt. It works really well.