A combi hammer looks similar to a hammer drill, but it has a rotation stop. That allows you to perform light chiseling jobs as well. You can chisel tiles from the wall or break down a small stone wall, for example. With a cordless hammer drill, you can work in spots without a socket. You're also not bothered by cords. A cordless combi hammer is often part of a battery platform. This means you can use 1 battery for your combi hammer and other (garden) tools from the same platform.