Basically, it easily lifted a 12-volt car refrigerator and a mobile charger... 14 hours trip from Germany to Italy and it didn't heat up at all... the refrigerator was permanently open... the previous one I had bought for 10 euros almost caught fire... occasionally it would come out of the car lighter socket because I have a small socket... it works very well for 12 volts... very expensive but at least I didn't have any issues...