Thor Forums

[Beau388]

Originally Posted by Chateau29Z

Whatever you do with the batteries DON'T WIRE THEM IN PARALLEL!!!!
Parallel wiring sets them up for a current loop which will allow the weakest cell to discharge the strong ones. Series wiring doesn't have this feature and while one cell may be weaker than others it can't be part of a current loop unless you are using the equipment in the RV. Then the equipment is part of the current loop.

In all lead batteries, the maximum supplied voltage per cell is 2.15 volt @ 70 F degrees. The minimum charging voltage for individual cells is 2.23 volts @70 degrees. Weak vs strong cells deals with amperage delivery and not with voltage, so how a a weak cell requiring 2.23 volts to charge, discharge a cell supplying 2.15 volts? Now if an individual cell is shorted, it will discharge all good cells in the circuit (parallel or series).