I got the same problem on my thinkpad x300 with Ubuntu 12.04.1 LTS. kill upowerd fixed the issue.
my battery was replaced recently with a new one (oem).
Device: /org/freedesktop/UPower/devices/battery_BAT0 native-path: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:01/PNP0C09:00/PNP0C0A:00/power_supply/BAT0 vendor: SANYO model: 42T4522 serial: 37
I got the same problem on my thinkpad x300 with Ubuntu 12.04.1 LTS. kill upowerd fixed the issue.
my battery was replaced recently with a new one (oem).
Device: /org/freedeskto p/UPower/ devices/ battery_ BAT0 LNXSYSTM: 00/device: 00/PNP0A08: 00/device: 01/PNP0C09: 00/PNP0C0A: 00/power_ supply/ BAT0
native-path: /sys/devices/
vendor: SANYO
model: 42T4522
serial: 37