Bests & Worsts Reviews from Amazon

There are days when I don't feel very smart. When I got this unit I wanted to test it so I put the cigarette lighter plug on and plugged it into the car, plugged in my electric drill and then blew the fuse on the cigarette lighter socket. Dummy, the lighter fuse is only 15 amps. 12 volt system at 15 amps, 12 x 15 = 180watts. Even if you get a 50 amp fuse, 12 x 50 = 600 watts. You can't fully use this. This has to be connected directly to the battery for full use. Connected directly to the battery works fine.