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I have 3 JK BMS's with 12 280ah cells.. 3 batteries with 4 cells in each connected. The 3 batteries are in parallel so I have 840ah. One of the packs was low when I connected the charger for some reason. I did manage to short one of the batteries when I was wiring so I am worried that have...

I have 12 280ah cells and building a 12volt 840ah battery. I bought a JK BMS Jk-B2A20S20PHC and didn't realized it was for 20volt and up battery. What JK BMS should I get?

I have a Victron Multiplus II compact and it goes into cycles of shutting off and coming back on when I plug in my Epson printer. I am in a sailboat and if I plug a cable directly from the marina and into my boat and plug the printer in then the printer works fine, but through the Victron it...