Anonymous2 years ago000Can this be operated without battery just by being plugged in the mains power socket? DarthShadow1 year ago000How long does a battery last? I would be interested in the part in my VW bus as a heater and air conditioner. If the part is placed in the bottom of the car, might it cool the whole bus, including the upper cabin?Show in original language (German)Commentgreffier.ch1 year ago • purchased this product000purchased this productYes on the 220volt but I haven't tested it yet as I've only just received it. Show in original language (French)Commentunamboy1 year ago000It is mains powered. An auxiliary battery can be purchased if required.Show in original language (French)Comment