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smitty81503's avatar
smitty81503
Explorer
Apr 26, 2021

Duramax batteries drained by camper while plugged in.

I’ve had my GMC duramax parked for two days with my truck camper plugged in to the the house. I’ve been running the refrigerator in the camper . Now my two truck batteries only show about 10.4 volts ...
schlep1967's avatar
schlep1967
Nomad
Apr 27, 2021
Does your truck camper have a converter/battery charger in it? If it does, my guess is it isn't working. The refer should be running off the 12 volt and the converter should be supplying enough to do that when plugged in to shore power without pulling from the truck.

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