The residential fridge was standard equipment in this 5th wheel. It's powered by a 1500 watt pure sine wave inverter and the standard 2 each 6 volt batteries. Since we're not boondockers, this is adequate for us as the batteries are maintained while we're traveling through the +12VDC feed from the truck's baatteries and alternator via the trailer's umbilical cord. Otherwise, we're plugged into shore power as we're either at a campsite or in our covered storage bay where we have 30 amp service while the 5th wheel isn't in use.

Rusty