I bought this to plug in in the front by my seat in the motor home, because the heat comes from the diesel engine at the back of the 40’ mammoth, so it’s not very warm at all. This works perfect to keep me warm. My husband wished I’d gotten one with a cigarette plug instead of a regular plug, but if it’s real cold, he just runs the generator for me. This is a 12 V, so it pulls too much energy for the batteries. I also use it sitting on the couch, which I can plug in normally, without the generatSee full review