yes you can run them with an inverter you will need to run your truck the whole time though or you batter will die almost instantly. My setup is sprinter van with two batteries. Aims power 3000W pure sine wave inverter (about $1000). will run the warmers all day long as long as the van is running. You likely don't need the pure sine wave part its for running variable speed tools. truck stops are a decent source for cheap inverters. Likely easier to buy a gennie just depends on what other uses you might have for it.