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Old 01-14-2016, 05:38 PM   #1
ButterflyMelissa
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Question decreasing power indication


Hi all
I have a power indication on my laptop (Xubuntu) and it showed 99% at the beginning of the week, not it shows 97%. The power pack is in and it's always plugged in...
My humble analysis: failing power pack...
Am I right?
Thanks
Melissa
 
Old 01-14-2016, 05:52 PM   #2
suicidaleggroll
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My laptop has done that since it was new. Some days it says 99, some 98, etc. Never lower than ~96 (unless of course I actually use the battery), and I have no reason to believe there's anything wrong with the battery.

My guess is that the system has a distinct charging mode, that it only enters when the battery capacity is below a certain level. It charges it up, then shuts off charging, and lets the battery sit and float. Over time the battery will self-discharge, causing the capacity to drop a couple of percent, and when it hits the charging threshold it gives it a little blast of current to bring it back up to full before letting it float again.
 
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Old 01-14-2016, 06:13 PM   #3
michaelk
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I agree, mine too typically sits around 98-99% but not charging. Its not good for Li batteries to be constantly charging and the charging circuit is smart enough to only charge below a certain level.
 
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Old 01-15-2016, 02:22 AM   #4
ButterflyMelissa
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Thank you both
Saves me on having to invest in a universal charger (that do NOT really come cheap)...
Marking as solved
Melissa
=^.^=
 
  


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