I got my hands on about a dozen of the single holder in a local Radio Shack
clearance. They are available Try Jameco, DigiKey, and Mouser to name a few. I
have seen two cells in the ones like I have but they are just thinnner cells.
No gain there. If you are looking for option, you may want to try some of the
Cordless phone batteries.  most just simple plug into a two pin header. Lots
of power and rechargable.

Just a Thought

Eddie Turner, KC4AWZ

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