Comment 4 for bug 577825

Seems a kernel problem:

$ cat /proc/acpi/battery/BAT1/info
present: yes
design capacity: 4400 mAh
last full capacity: 4400 mAh
battery technology: rechargeable
design voltage: 11100 mV
design capacity warning: 300 mAh
design capacity low: 132 mAh
capacity granularity 1: 32 mAh
capacity granularity 2: 32 mAh
model number: BAT1
serial number: 11
battery type: 11
OEM info: 11

$ cat /proc/acpi/battery/BAT1/state
present: yes
capacity state: ok
charging state: charged
present rate: unknown
remaining capacity: unknown
present voltage: 10000 mV