> -----Original Message-----
> From: piclist-bounces@mit.edu On Behalf Of Isaac Marino Bavaresco
> Sent: Wednesday, February 29, 2012 10:17 AM
>
>
> Em 29/2/2012 11:50, alan.b.pearce@stfc.ac.uk escreveu:
> > I have an LED torch that gets its power from being wound up.
<snip>
> the generator produces about 12V when wound, but the
> capacitor looking piece immediately drops back to about 3V when
> you stop winding.
> >
> > Does anyone know what is used for energy storage in these? The
> device in it looks like a capacitor, marked
> >
> > 3.6V 80mAh
<snip>
>
> The "mAh" rating is used for batteries.
>
> Perhaps a LiFePo4 battery (lithium-iron-phosphate). They are rated at
<snip>
>
> Best regards,
> Isaac

It could be a Ni-MH 3.6V 80 mAh memory backup battery pack. Made by a few
different manufacturers, Dantona COMP-16-1NMH, Gold Peak GP60BNK3A1H, Varta
3/V60R, 3/60DK, 3/V80H-2P.

If it is this battery then AFAIK, charging directly from a 12V generator
would not be good for a long life.

Paul Hutch

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