most RV's don't have all that hefty of house battery capacity (my parent's house battery is 2 deep cycle lead acid batteries). Heating things takes a lot of po

most RV's don't have all that hefty of house battery capacity (my parent's house battery is 2 deep cycle lead acid batteries). Heating things takes a lot of power, probably run those batteries down before you got much more than a single kettle of water hot. Anything that's going to use an electric stove is most likely going to have a generator.