I have a couple of Wahl cordless soldering guns with
very small tips on them which each use 2 2.5-volt re chargeable
cells. I ten to not use them for very long periods of time and
then discover after a couple of years that the cells will no
longer charge and must be replaced which is a mechanical nuisance,
getting everything back so you can close the case once again.

	The two cells are roughly C-sized nicads. This made me
wonder if a couple of ultracaps might be a reasonable
replacement. They might survive periods of disuse better.

	It would probably also be necessary to modify the
charging circuit so the voltage would stay at 5 volts across the
pair when fully charged since these aren't nicads.

Martin McCormick
--=20
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