N type battery holder
coin cell batteries
sharp wire cutters
Step 1: With A Little Help From My Friends
The A23 battery fits very well in an N type battery holder (keep that in mind for the future), but I only need 4.5v. Just three of the cells inside the battery will work well. But three cells definitely will not fit in this holder. Let's cut it down a bit.
Step 2: We Can Work It Out
You can use a small fine toothed saw to cut out the bit of battery holder. If your saw is in a storage unit somewhere like mine is, a set of sharp wire cutters will work as well. Just cut down the sides, fold the base back and cut through that as well. I used a Dremel tool with a sanding band on it to clean up the edges and make them straight. Leave a bit extra with each cut to allow for this sanding.