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Have a battery pack to my electric bike. Built from Sony 2.9Ah 30A cells. Had some problems earlyer with the 4 cells that is the Main positive. They lost voltage, the other cells stayed in a couple of millivolts, but the cells with the positive cable was all the way down to 1.5V. Changed the...

Hi! Just got my hands on six 12s 60ah modules from a BMW i3. I have a Epever 24V solar charger/inverter, and in a couple of month Im going to buy some solar panels. Looking for advice for these modules, thinking of rebuilding them in a 7s config, or maybe buy a 48v charger/inverter and have...