Date: Fri, 23 Mar 2001 11:47:20 -0500
From: David VanHorn <[EMAIL PROTECTED]>
Subject: Re: H Re: frightened batteries / what is in there?
>
>Of serious interest, not that sex isn't, I do not recall anyone describing
>what they found in a Lib battery pack. I have assumed all three cells were
>charged or at least monitored independently. Something to do with the Hocus
>Pokus explosive nature of Li-Ion cells. I would brag that mine have both been
>with me for the whole four years, but know that the next thing I would see is
>an orange flashing light.
There's circuitry in there, but of course not a schematic.
It appears to be overcurrent protection, rather than charge management.
All you need to charge these is a 1% accurate voltage source, with an
appropriate current limit.
I've done it on the bench.
Camcorder cells (like those all electronics ones) appear to be fine
replacements.
Caution: Replace ALL the cells at once, not one at a time.
The only problem is in welding the tabs on. Maybe this could be done by
one of the major battery shops.
--
Dave's Engineering Page: http://www.dvanhorn.org
Where's dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9
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