Nickel-Cadmium Rechargeable batteries anyone?

adwsystems:
If you can solder, you can go with one of these

Velleman K7300 NiCd Battery Charger

(available elsewhere for less, but this link was convenient)

Yeah that looks cool and all and surely seems like it would do what I want. But then again, it would be more fun to try and make one myself. That thing DOES require a solder and I do have one but right now I'd prefer to go the other route.
But thanks nevertheless for the offer, I had no idea that existed and will keep it on my wishlist for later