I am very satisfied with my AUTOOMMO tire compressor. The design, similar to an electric drill, is really ingenious. Charging is easy, just disconnect the battery and plug it into a USB port or car cigarette lighter for a few hours until the indicator turns green and you're done. In terms of durability, the battery performance is excellent, I've pumped up half a dozen (scooter) tires and a couple of basketballs and still haven't had to charge them. In terms of accuracy, this is the most accurate compressor I've ever had. It's accurate enough that I don't have to use a pressure gauge.