We purchased a 12 volt adaptor from Mikegyver. You send them your power supply and they cut the cord and make it so you can plug it into either 110 or a 12 volt cigarette lighter type plug. Using a 12 volt plug is a hell of a lot better than turning on an inverter.
We need to run our generator 1.5 hours a day to manage the boats energy needs ( a Kiss but no solar). When I turn the generator on, everything gets charged. It's a daily ritual.