[captainclock1988]

I was also thinking of those Sealed Lead-Acid Rechargable batteries like the onces they use in those UPS Backup supplies, I have tons of resistors ranging from 1/8 watt to 10 watt jobs and I figure I might be able to do something like that for the "A" Battery, either that or get some Lithium-Ion Rechargable "D" Cells (which do exist), and use those.

EDIT: I found these rechargeable batteries at Harbor Freight for $8 and they are supposed to be High Capacity batteries that are good for high drain applications such as electronics devices, and they can be recharged up to a 1,000 times, there's also a decent looking option at Batteries + Bulbs for $33. See links below.

Rechargeable Batteries

Rechargeable Batteries 2