These modules were not opened or reset. These modules were not bad ones we restored, they were always good that we have maintained. The BMS does draw power from the module during normal operation. If left in storage for over a month, keep an eye on the voltage and top off the battery periodically.
You can series and parallel these batteries as needed, but we don’t recommend going over 4 in series. Make sure they are all fully charged before you series them, and at least the same voltage before you parallel them.
BMS will automatically balance the cells within one module during the top of the charge. Will not balance between modules when hooked up in series, only in parallel. If wiring these modules in series, please see the balancer we have listed to keep your batteries balanced. You would need the 12V version, one for every module you have in series.
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