The basic cordless power drill has been around for decades and you’re likely to find at least one in just about every home where there’s an adult male. They’re shaped like a gun with a thick handle, a trigger and a motor mounted horizontally that turns the drill bit. There’s nothing complicated about them. They have large, rechargeable batteries (a new cordless drill will often have a 20v battery) and can weigh anywhere from a couple of pounds to 2 or 3 times that. The hammer drill by comparison looks like a regular cordless drill but has a feature that drives the drill bit forward something like a jackhammer. This is intended to help you get your hole drilled faster, especially in concrete or other masonry surfaces. If you’re a woodworker, chances are you’re not going to need a hammer drill.\r