Clinton
You should be able to buy a lead with baterry terminals on the end. If it's the 9v type get two leads join them together plug one end into the circuit board, you will only need to do it the once, and the other end can be fixed wherever you wish to place the battery.
If I'm not making sense pm me an email address and I'll sketch it out. But for a guy that made the guitar clamps it should not be a problem!
KJ