Years ago the so called decorators on the job I wired masked the sockets and switches off rather than undo them with a screwdriver. I said this was not good. In there wisdom they got a dewalt drill and were using this to undo them and tighten them up. They broke a few sockets. I was not happy. If you do use a battery device ensure you have the torque set to minimum. By the way they were not real decorators they had a day of in the week to go to get there dole.