I had a bad experience with the first product I ordered. I charged the battery overnight and went out the next day and checked my tire pressure and pumped up the tires that were weak. Everything seemed fine. I charged the battery after finishing. A few weeks later I went back to the AUTDER air compressor and the battery died. I've tried charging multiple times but the charge won't hold. But there's good news: the company was quick to send me a new replacement, and it's working like clockwork. It seems quieter than the first one I got and it fills the tires a lot quicker, the target pressure cut off seems very accurate and works great. New used a few times. I highly recommend both the AUTDER portable air compressor and the company.