Bought my used camper last year and a solar panel was already installed when I got it. My last camping trip I ran the heater overnight for two nights with no problems and was camped under trees so do...
Measured the battery voltages this morning. Battery #1 13.02v Battery #2 13.09v
I put my car charger on one of the batteries and it drew 2 amp of charging current but the voltage measured 15.4v which is a volt higher than the camper charger was putting out.