hooking up a 9-volt battery to a lazer pointer Answered
have you ever had a lazer pointer that was really fun, but then ran out of batteries? those little replacement batteries are hard to find. while I was supprised there weren't any instructables on this, I'll be posting one soon. I know how to use a 9-volt battery to power the lazer pointer again. this fuel cell is easy to find, and easy to work with. comments? are you interested?