I think you have multiple problems here. One of them is that either
energy-full or energy-full-design is wildly incorrect, resulting in very
low % full readings. There's an example above - here's mine. Note that
upower (and battery meter), are both reporting 11% left; there's really
a lot more than that.
Device: /org/freedesktop/UPower/devices/battery_BAT0
native-path:
/sys/devices/LNXSYSTM:00/device:00/PNP0C0A:00/power_supply/BAT0
vendor: DPONz4516KWDGKMA3123456789ABCDE
model: bq20z4516KWDGKMA3123456789ABCDE
power supply: yes
updated: Tue Apr 19 21:07:33 2011 (12 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: discharging
energy: 75.59 Wh
energy-empty: 0 Wh
energy-full: 636.83 Wh
energy-full-design: 84.5 Wh
energy-rate: 17.343 W
voltage: 11.92 V
time to empty: 4.4 hours
percentage: 11.8697%
capacity: 100%
History (charge):
1303261653 11.870 discharging
1303261623 11.893 discharging
1303261593 11.915 discharging
1303261563 11.936 discharging
History (rate):
1303261653 17.343 discharging
1303261623 20.442 discharging
1303261593 15.973 discharging
1303261563 15.189 discharging
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https://bugs.launchpad.net/bugs/531190
Title:
upower (devkit-power) reporting bad data when AC cable is unplugged
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