Unfortunately, this model does not have built-in battery monitor (Mobicool calls apparently ABS = Automatic battery protection), nor heat function, but the main task is indeed cooling. This works very well. The cooler fits well into the footwell of the rear seats. Before driving the box is about 1 hour run in the house and there come in yet 2 ice packs. In the car she then runs on de stage "eco" almost silently and even if you forget the box once in the car (no power), the content is after a few hours still cool (what that looks like in mid-summer, unfortunately could not test this year will).