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coolmom42's avatar
coolmom42
Explorer II
Sep 06, 2020

No 12 V juice--battery or converter?

My new-to-me 2014 Coachmen C (21QB) has no 12 V juice without the generator running. As in, the lights won't even come on. The battery is a cheapo, previous treatment unknown. When I looked at it prior to buying, the generator was running, because it was a really hot day & I wanted to make sure the AC was working.

It's possible a light was left on inside the first day I got it home, too. That may have flat-lined the battery in a couple of days.


If the 12 V systems work when the generator is running, does that mean the converter is working?

If the 12 V systems work when plugged in to 110 V, does that mean the converter is working?


The generator hour display has a tiny battery icon and as best as I can see it shows a symbol of a battery charging (zigzag in the icon.) Does that mean that the generator is charging the battery?

What battery does the generator use to crank up? It starts just fine.