Grind tiles to the right size or deburr metal with a Bosch cordless angle grinder. Because it works on a battery, you having to be near to a socket. You also won't have to mess around with extension cords, so you have a lot of freedom of movement. A Bosch cordless angle grinder is just as powerful at the version on a power grid. You can buy a Bosch cordless angle grinders both with or without a battery. So if you already have a battery at home, you can also use it for your new Bosch angle grinder. Make sure that it's part of the same battery platform and has the right voltage.