If you are going to use it mostly for computers and electronics consider a cordless. I have an old, battered lightweight cordless drill with two batteries. It will easily last half a day on one battery because when I'm taking electronics to bits there is no load on the machine, it's just turning the little screw lots of times to get it undone.

I have one battery on charge and I swap them over as necessary. I definately wouldn't want to use a wired drill if I didn't have to.