Why does laptop battery show < 100% charge

Craig White craigwhite at azapple.com
Thu Sep 17 02:03:22 UTC 2009


On Wed, 2009-09-16 at 17:51 -0700, Paolo Galtieri wrote:
> This is something that has been driving me crazy over the last several
> weeks.  I have my laptop plugged into AC power and has been plugged
> into AC power for several days now, but the battery applet shows 97.3%
> charge.  It has been showing < 100% for several days and never reaches
> 100%.  The battery is less than 3 months old.  I'm running F11 with
> all the latest updates.
> 
> I would appreciate any ideas as to why this is the case.  There have
> been no power outages so it seems to me there is no reason my battery
> should show < 100% charge.
> 
> In case it makes a difference I'm running wireless on a 3945ABG.  The
> processor is a Intel(R) Core(TM)2 CPU T7200  @ 2.00GHz
----
sounds as if the battery needs to recalibrate itself. Try running on
battery power for 15-30 minutes and then plug it in again and it should
reach full charge.

Craig


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