"The refer is being powered thru the converter and you vehicle engines alternator is keeping the battery charged." Our 20 cu ft fridge runs off the inverter, which is powered by four 6 volt batteries (connected in series and parallel), which is recharged by the truck alternator as we go down the highway. In two hours the fridge goes from room temp to 38 degrees in the fridge, 0 degrees in the freezer and stays that way till turned off. The four best things on our CC is the bed, bathroom, A/C's and the fridge.
Bob & Sharon, "15 Cedar Creek 38CK Custom, '13 RAM 3500 Laramie, 4x4, LB, CC, DRW 6.7 Cummins HO, Aisin 4.10"