EDIT: Downgraded to one star. Use the second time and it won't stay. The slightest effort trying to sand a plastic surface and it just shuts off. Tried leaving it charged all night, no improvement. Don't waste your money, buy a corded Dremel tool. Not a bad little tool, but not great either. It seems suitable for very light tasks, but gets bogged down too easily. Don't expect to cut plastic with a cutting wheel. The engine just dies under load. The bit also gets stuck in the chuck. I have to disassemble the chuck to hit the club out from behind with a different club every time I need to change it. I won't be returning it, but now that I know its limitations, I wouldn't buy it again.