Public bug reported:
I have a second-gen MacBook, 15 inch white version with original
battery. Latest battery firmware (1.4) applied in OS X. The battery
still holds charge and works as it ought to. I have external lights
that show me how much charge there is and whether the battery is
charging.
I took my laptop off power about 2 hours ago, and allowed it to slowly
discharge. I then plugged it back into power about 1 hour ago. I am
attaching screenshots to show what power manager is reporting. It
correctly identified that the power slowly drained, but when I plugged
the AC power back in, it declared that there is 2.8% charge remaining
and has done so for the last hour. I can confirm using my external
lights that my battery discharged no lower than 80% and then was
charging betwen 80 and 100% for the last hour.
Also, looking at the power statistics, it seems as though something is
SNAFU. It appears as though one of the numbers is miscalculated. Also,
my laptop reported 2.8% full for an hour when the rate was 2.8 Watts.
Is it confusing the percentage-full with the wattage?
Richard
** Affects: gnome-power-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: battery gnome laptop macbook power
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Power Manager reports incorrect battery charge
https://bugs.launchpad.net/bugs/410604
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