From: Kevin Jarrett (kevin_jarrett_at_hotmail.com)
Date: Thu Sep 27 2001 - 11:24:18 EDT
Discovered something interesting, thought I'd share.
Up until recently, I always recharged batteries when cool or cold. I would
drain them until the pc shut down, let them sit a couple hours and get to
room temperature, then charge them, often overnight.
However, my past few recharges were "hot", the PC would go to 3%, hibernate,
then I'd plug in the AC and charge her up.
Doing this seems to have cost my battery some capacity, as reported before,
but doing it the old way appears to have brought some of it back: last
night, I did a 'cold' overnight charge, and the battery capacity is now
chowing 36.16wh, up from 33-something yesterday. That's about a 10% gain,
and the cell is now up to 93% of factory capacity.
1) How do you all charge batteries?
2) What is the best way to deep-discharge the battery? I usually just leave
it on and W2K shuts it down with 3% remaining or so. Is it safe/advisable
to, alternatively, leave the PC in the BIOS setup screen, to allow the
battery to run down? On my Win98 PCs, I just boot into Safe Mode Command
Prompt Only and let 'em die. W2K doesn't allow me to do this usually - I
don't think I've ever been in Safe Mode Command Prompt only on this PC.
Thanks, kj
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