Product review (5 stars): Worked perfectly for two full weeks
I bought this cooler for a two-week road trip we took with a friend visiting from Norway. When it arrived, I tested it by plugging it into the wall, and it quickly started to get cold. I didn't test it again. The morning we left, I plugged it in for half an hour, then loaded it with food from the refrigerator (we had our drinks in a separate, smaller cooler with ice). It then was plugged in, either in the car or in our motel rooms, 24/7 for the next two weeks. We did a lot of sightseeing, so we made many stops, which turned the cooler off each time. It started up immediately again when the car started. We never had any problems with the cables overheating (I checked periodically). It's very quiet, although in the car it developed a small rattle at times (I think it was the motion of the car because it disappeared when the car wasn't moving.) We got home yesterday, and I unloaded the still-cold food. There was some condensation in the bottom of the cooler, but after two weeks of running continuously, I wouldn't expect anything else. I am extremely pleased with this cooler.