Sceadwian
Banned
I have a laptop battery that would no longer properly charge and gutted the cells from it, they're Sony 2200mah cylindrical Lithium Ion cells. Most of the cells read 1.4-1.9 volts or so, two read .9 I can guarantee the .9 volt cells are unusable but I don't know anything about the charging circuitry and why it was cutting off. Anyone have any experience trying to recharge lithium ion cells that have reached this state and been there for quiet a bit? I'm going to hand charge one of the better cells using a low constant current monitoring for temperature but I don't know what happens to the chemistry of a battery that's been in such a state for a long period of time, other people's experience would be useful.
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