Forum Discussion
Executive45
Nov 28, 2018Explorer III
As a novice, here's what I would do. Since your batteries are already dead, disconnect just the NEGATIVE cable, that's the black one on each battery. Then hook up a decent, at least a $40 one not the cheapie, borrow one if necessary, to just one battery and let it charge completely. May take 24 hours to do so. Unhook the charger and put it on the other battery. Do not reattach the first battery's cable yet. Once both batteries are now fully charged, unhook the charger and reattach both negative cables. Trying to charge the batteries thru the coach will be difficult since you're using a 30amp to 15amp adapter. If you were, indeed, hooked up to 30amp service the coach could probably charge the batteries up but the way you have it wired I doubt it'll be able to do so. With the batteries fully charged, the on board charger should be able to keep up..it's difficult to troubleshoot without fully charged batteries.....good luck...Dennis
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