On Feb 25, 5:21*pm, joesimmers wrote:
I agree, with using A123 cells. *They are coming down in price, pretty
rapidly too, I think. *Shoot, even Lowe's hardware and lumber stores are
selling them!

Are these the same type of batteries that you find in cordless drills?

The A123 cells, is a specific type of Li battery. LiFe aka Lithium
Iron Phosphate or sometimes stated as "Lithium Iron" but not to be
confused with Lithium-Ion (the standard Li chemistry). There are
several other Li chemistries in use. e.g. don't confuse the A123 LiFe
secondary battery with the LiFeS2 (Lithium Iron Disulfide) primary
battery chemistry used in ELT and PLB batteries and in the Energizer
e2 batteries for use in the SPOT messenger.

Nowadays cordless drills likely run on NiMh (Nickel metal hydride) or
standard Li-Ion or yes some do have the A123 cells.

Darryl