Charging 4 batteries with external charger.
My RV has 4, 6 volt batteries. I've recently run them down and need to charge them with an external charger. Does it matter which positive post your connect the positive cable to and which negative ...
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At 10 amps you can't hurt nothing. No joke see if you can charge them individually. Likely the charger will register as an error. My friend stuck a 12v 5a charger onto a 6v for 2 days. Poor mans equalization charge.
