Comment 121 for bug 531190

From this we can see that hardware and kernel reports right figures when unplugging the powercord:
tarmo@tarmo-hpmini ~ $ cat /proc/acpi/battery/BAT1/info
present: yes
design capacity: 2600 mWh
last full capacity: 2383 mWh
battery technology: non-rechargeable
design voltage: 10800 mV
design capacity warning: 120 mWh
design capacity low: 24 mWh
capacity granularity 1: 0 mWh
capacity granularity 2: 100 mWh
model number: Primary
serial number: 100000
battery type: LiOn
OEM info: Hewlett-Packard
tarmo@tarmo-hpmini ~ $ cat /proc/acpi/battery/BAT1/state
present: yes
capacity state: ok
charging state: charging
present rate: 64269 mW
remaining capacity: 1959 mWh
present voltage: 12548 mV
tarmo@tarmo-hpmini ~ $ cat /proc/acpi/battery/BAT1/state
present: yes
capacity state: ok
charging state: discharging
present rate: 1260 mW
remaining capacity: 1959 mWh
present voltage: 11789 mV

Here we can see how upower miscalculates remaining battery charge (time to empty 2.2 minutes):
tarmo@tarmo-hpmini ~ $ upower --dump
Device: /org/freedesktop/UPower/devices/line_power_AC0
  native-path: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/ACPI0003:00/power_supply/AC0
  power supply: yes
  updated: Wed Jan 12 14:35:07 2011 (835 seconds ago)
  has history: no
  has statistics: no
  line-power
    online: yes

Device: /org/freedesktop/UPower/devices/battery_BAT1
  native-path: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0C0A:00/power_supply/BAT1
  vendor: Hewlett-Packard
  model: Primary
  serial: 100000
  power supply: yes
  updated: Wed Jan 12 14:35:13 2011 (829 seconds ago)
  has history: yes
  has statistics: yes
  battery
    present: yes
    rechargeable: yes
    state: fully-charged
    energy: 2.383 Wh
    energy-empty: 0 Wh
    energy-full: 2.383 Wh
    energy-full-design: 2.6 Wh
    energy-rate: 65.535 W
    voltage: 12.364 V
    percentage: 100%
    capacity: 91.6538%
    technology: lithium-ion

Daemon:
  daemon-version: 0.9.1
  can-suspend: yes
  can-hibernate yes
  on-battery: no
  on-low-battery: no
  lid-is-closed: no
  lid-is-present: yes
tarmo@tarmo-hpmini ~ $ upower --dump
Device: /org/freedesktop/UPower/devices/line_power_AC0
  native-path: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/ACPI0003:00/power_supply/AC0
  power supply: yes
  updated: Wed Jan 12 14:50:10 2011 (3 seconds ago)
  has history: no
  has statistics: no
  line-power
    online: no

Device: /org/freedesktop/UPower/devices/battery_BAT1
  native-path: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0C0A:00/power_supply/BAT1
  vendor: Hewlett-Packard
  model: Primary
  serial: 100000
  power supply: yes
  updated: Wed Jan 12 14:50:13 2011 (0 seconds ago)
  has history: yes
  has statistics: yes
  battery
    present: yes
    rechargeable: yes
    state: discharging
    energy: 2.383 Wh
    energy-empty: 0 Wh
    energy-full: 2.383 Wh
    energy-full-design: 2.6 Wh
    energy-rate: 65.535 W
    voltage: 12.43 V
    time to empty: 2.2 minutes
    percentage: 100%
    capacity: 91.6538%
    technology: lithium-ion

Daemon:
  daemon-version: 0.9.1
  can-suspend: yes
  can-hibernate yes
  on-battery: yes
  on-low-battery: no
  lid-is-closed: no
  lid-is-present: yes

Could it be that upower uses very high charging rate as basis of calculation of remaining time (seen in the first battery state)?
I agree with previous comments that this is a critical problem. This is causing laptop being useless. When unplugging laptop goes to standby, when waking up, it comes up but immediately hibernates etc... I hope there could be some sort of patch for this version of upower, because it will be used in ubuntu 10.04 for tree years (long term support). Is there any way I could help in locating the problem?