Can an RV refrigerator work when not plugged in?

Yes, an RV’s fridge can run when not plugged in to an external power source. RV refrigerators operate on household current or propane; when the camper is not plugged into an AC power source, the refrigerator uses heat from a propane-fueled flame to complete the cooling process. Some RVs offer residential refrigerators like those in a home. They use the RV’s battery power supply (inverted into AC power) to operate the refrigerator compressor and supply cooling when not plugged in.