That is a little bigger fridge than most... as the drivers often need as much cooling and freezing space as they can get! The fridge is powered by the inverter all the time... the storage battery is charged automatically by the 220 amp alternator whenever the engine is running. It seems to be a very reliable and trouble free setup. The generator stores in its own little metal box which is accessible only when the sliding door is open... by the generator only runs outside of the van, as its VERY difficult to create a safe box inside of the van when a generator can operate with enough cooling and little noise.