Its 400 watt can run anything that pulls less than 400. Best is anything that pulls 200 or less.400 watt pull will probably pop the fuse. Alternating current is in waves low and highs D.C. current is a constant. No peaks. I'm a truck driver and use a 2000 watt inventor in the truck. Also keep on mind anything that produces heat. Blowdryer heater heat gun pulls a lot . check out the item to see what it pulls.and Will have to run the pickup to keep from running the battery dead. Personally the idea of a 400 watt 110 in the bed is s bad and not very useful idea