I was pleasantly surprised and happy with this. It's a good size, very usable amount of space inside, a good quality and robust construction which will be perfect for the boot of any car or van. It plugs in to the cigarette lighter socket, which I have in the boot too, so that's perfect! So far we've just tested it out to confirm it's suitable, and it definitely is. In the next few months or so it will get used properly, but we are confident it will do the job and replace our older one which is around the same size, but has less interior space. It has a auto cut off which can be adjusted, which is good, as I have dash cams and tracker all draining power constantly, so knowing this will cut off power instead of draining the battery flat is very important!