some point that the charge was stopped at 4%. My Pismo was still reporting
charging the battery, but the battery was apparently not charging. I also
noticed that the expected time to reach a full charge went from 1:00 to
"Calculating... until full". Out of the blue, I removed the battery and put
it back in. Then, the Pismo started charging the battery again. It went to
about 11% and then stuck there. So, I started pulling the battery and
putting it back in, and the Pismo would continue charging. I'm about 90% of
Sounds like a shorted cell. There are several factors which will kick the battery off fast charge, one of which is overcurrent and another of which is overtemperature. The battery is pulling too much current and hitting a dT/dt plateau or exceeding Tmax, and the charger is switching off fast charge. When you remove and reinsert it, you get a couple of minutes' fast charge before the same thing happens again.
The 90% figure is almost certainly totally bogus, too - it's not a measure of actual charge level, but a measure of energy injected in as a percentage of best-guess energy capacity.
-- Lewin A.R.W. Edwards http://www.zws.com/ Learn how to build high-performance embedded systems on a budget! http://www.amazon.com/exec/obidos/ASIN/0750676094/zws-20
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