> > More worrying than the fake Li-Ion cells is the quality of some
> > of the Li-Ion chargers
>
A reasonably OK LiIon charger is easyish.

Charge LiIon / LiPoly with 4.2V/cell current limited to <=3D 1C (or C/2
for some cells) and it will safely enough charge most cells OK.

Stop when voltage reaches 4.2V/cell (clamped to lower that during
current limited V ramp up) and you have optimum storage point for long
life.

Or allow to current tail down and stop at say 25% of I max for a
reasonably complete charge.

Charging very discharged cells with that system may be exciting.

For LiFePO4 replace 4.2V/cell with 3.6V/cell and do much the same.
Lower Vmax by 0.05V to 0.1V for longer life (& lower capacity).

__________________

NimH voltage limit to 1.45V/cell at 25C and all is usually not too bad.

     Russell


>
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