>
>
> Sorry, no.  I didn't have a camera when I opened it at work (better tools=
).
>
> It was just a battery in blue "shrink wrap" with 2 wires.
> 30mm x 50mm x 4mm, about 600mAH.
>
>
I wonder if it's a lithium polymer battery. These are rolled in an aluminiu=
m
foil case and are not hard shelled. Nominal voltage is 3.7V/cell. Fully
charged is 4.2V/cell.

thousands of lithium polymer batteries and cells are marketed to the radio
control hobby.

take a look at this cell, for example:
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=3D7572
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