Comment 53 for bug 1103064

Same here on Linux Mint 17.1 Cinnamon x64 with an Rapoo 6610 Bluetooth Mouse.

Here is what upower -d had to say:

Device: /org/freedesktop/UPower/devices/line_power_ACAD
  native-path: ACAD
  power supply: yes
  updated: Fr 20 Mär 2015 15:48:35 CET (2684 seconds ago)
  has history: no
  has statistics: no
  line-power
    online: yes

Device: /org/freedesktop/UPower/devices/battery_BAT1
  native-path: BAT1
  vendor: UNKNOWN
  model: AP12A3i
  serial: 12985
  power supply: yes
  updated: Fr 20 Mär 2015 15:48:40 CET (2679 seconds ago)
  has history: yes
  has statistics: yes
  battery
    present: yes
    rechargeable: yes
    state: fully-charged
    energy: 51,4485 Wh
    energy-empty: 0 Wh
    energy-full: 51,4485 Wh
    energy-full-design: 55,5 Wh
    energy-rate: 0 W
    voltage: 12,444 V
    percentage: 100%
    capacity: 92,7%
    technology: lithium-ion

Device: /org/freedesktop/UPower/devices/mouse_hid_6co5do63o00o21o74_battery
  native-path: hid-6c:5d:63:00:21:74-battery
  model: Rapoo 6610
  power supply: no
  updated: Fr 20 Mär 2015 16:33:18 CET (1 seconds ago)
  has history: yes
  has statistics: yes
  mouse
    present: yes
    rechargeable: yes
    state: discharging
    percentage: 0%

Daemon:
  daemon-version: 0.9.23
  can-suspend: yes
  can-hibernate: yes
  on-battery: no
  on-low-battery: no
  lid-is-closed: no
  lid-is-present: yes
  is-docked: no

The indicator is always at 0% and not changing.

Best regards and keep up the good work!