Hi Merts, I payed $200 for a upright 55lt second hand Chinese fridge, its very quite when running when the 4wd is stopped, but driving along the compressor has a rattle inside it like a tin can trying to escape, it runs no more than a engel, I have not tested it to see what amps it uses, Ive had it in the back of my old 80 series for a few weeks and it gets hot in there but it kept the drinks icy cold and the freezer bit was frozen, How long it will last I have no Idea, Craig