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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I assume that you have your batteries hooked up to provide 12 volts to your coach. If you hook up the charger at the same point where the 12 volt output is taken from, there should be no problem at all.
