[ltp] Battery dying

Thomas Porter linux-thinkpad@www.bm-soft.com
Thu, 1 Nov 2001 23:46:56 -0500


On Thu, Nov 01, 2001 at 10:27:32PM -0500, Thomas Hood thoughtfully expounded:
> PMO.  I just bought a new battery in July, and already it's dying
> just as my last battery did.  When charging, after it charges to
> about 20% it jumps up to "100%", and when I run on battery it
> only runs down to about 85% before dropping suddenly to 5%.
> 
> Is this a firmware bug, or what?

Thomas,

I have had similar problems.  Can you check something for me:  What is the time
remaining when your battery charge level drops from 85% to 5%?

I have found on mine that regardless of my usage pattern, and thus the
percentage shown, that when the time remaining drops under one hour, from 1:00
to 0:55, is when the battery goes critical.

I too suspect some kind of system problem: charging circuit, firmware in
battery, APM BIOS support, etc. and am trying to confirm this.

-- 
Tom Porter                                       txporter@mindspring.com
------------------------------------------------------------------------
"On two occasions I have been asked [by members of Parliament], 
'Pray, Mr. Babbage, if you put into the machine wrong figures, will 
the right answers come out?'  I am not able rightly to apprehend the 
kind of confusion of ideas that could provoke such a question."


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