Same problem in Ubuntu 14.04 with a Dell XPS 13 9333. Extrangely, before upgrading to 14.04 from the original stock 12.04 Ubuntu version shipped with the computer, the mouse battery was reported correctly (as a mouse). Mouse is Dell Travel Mouse WM524 =============================================== # lsb_release -rd Description: Ubuntu 14.04.1 LTS Release: 14.04 =============================================== # upower --dump Device: /org/freedesktop/UPower/devices/line_power_ADP0 native-path: ADP0 power supply: yes updated: mar 20 ene 2015 15:44:41 CET (1558 seconds ago) has history: no has statistics: no line-power online: yes Device: /org/freedesktop/UPower/devices/battery_BAT0 native-path: BAT0 vendor: SIMPLO model: Dell serial: 2959 power supply: yes updated: mar 20 ene 2015 16:10:20 CET (19 seconds ago) has history: yes has statistics: yes battery present: yes rechargeable: yes state: charging energy: 33,1076 Wh energy-empty: 0 Wh energy-full: 55,944 Wh energy-full-design: 55,944 Wh energy-rate: 17,9894 W voltage: 8,036 V time to full: 1,3 hours percentage: 59% capacity: 100% technology: lithium-ion History (charge): 1421766620 59,000 charging 1443692692 80,000 discharging History (rate): 1421766620 17,989 charging 1421766590 18,100 charging 1421766560 18,256 charging 1421766530 18,271 charging 1443692698 8,939 discharging 1443692696 9,805 discharging 1443692694 17,242 discharging 1443692692 12,735 discharging Device: /org/freedesktop/UPower/devices/battery_hid_00o1fo20oe8o4co97_battery native-path: hid-00:1f:20:e8:4c:97-battery model: Dell Travel Mouse WM524 power supply: no updated: mar 20 ene 2015 16:10:33 CET (6 seconds ago) has history: yes has statistics: yes battery present: yes rechargeable: yes state: discharging energy: 0 Wh energy-empty: 0 Wh energy-full: 0 Wh energy-full-design: 0 Wh energy-rate: 0 W percentage: 88% capacity: 100% 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 =============================================== # apt-cache policy upower upower: Instalados: 0.9.23-2ubuntu1 Candidato: 0.9.23-2ubuntu1 Tabla de versión: *** 0.9.23-2ubuntu1 0 500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages 100 /var/lib/dpkg/status =============================================== # apt-cache policy gnome-power-manager gnome-power-manager: Instalados: 3.8.2-1ubuntu2 Candidato: 3.8.2-1ubuntu2 Tabla de versión: *** 3.8.2-1ubuntu2 0 500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages 100 /var/lib/dpkg/status =============================================== # grep . /sys/class/power_supply/*/* grep: /sys/class/power_supply/ADP0/device: Is a directory /sys/class/power_supply/ADP0/online:1 grep: /sys/class/power_supply/ADP0/power: Is a directory grep: /sys/class/power_supply/ADP0/subsystem: Is a directory /sys/class/power_supply/ADP0/type:Mains /sys/class/power_supply/ADP0/uevent:POWER_SUPPLY_NAME=ADP0 /sys/class/power_supply/ADP0/uevent:POWER_SUPPLY_ONLINE=1 /sys/class/power_supply/BAT0/alarm:0 /sys/class/power_supply/BAT0/capacity:61 /sys/class/power_supply/BAT0/capacity_level:Normal /sys/class/power_supply/BAT0/charge_full:7560000 /sys/class/power_supply/BAT0/charge_full_design:7560000 /sys/class/power_supply/BAT0/charge_now:4644000 /sys/class/power_supply/BAT0/current_now:2467000 /sys/class/power_supply/BAT0/cycle_count:0 grep: /sys/class/power_supply/BAT0/device: Is a directory /sys/class/power_supply/BAT0/manufacturer:SIMPLO /sys/class/power_supply/BAT0/model_name:Dell grep: /sys/class/power_supply/BAT0/power: Is a directory /sys/class/power_supply/BAT0/present:1 /sys/class/power_supply/BAT0/serial_number:2959 /sys/class/power_supply/BAT0/status:Charging grep: /sys/class/power_supply/BAT0/subsystem: Is a directory /sys/class/power_supply/BAT0/technology:Li-ion /sys/class/power_supply/BAT0/type:Battery /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_NAME=BAT0 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_STATUS=Charging /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_PRESENT=1 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_TECHNOLOGY=Li-ion /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CYCLE_COUNT=0 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_VOLTAGE_MIN_DESIGN=7400000 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_VOLTAGE_NOW=8064000 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CURRENT_NOW=2467000 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CHARGE_FULL_DESIGN=7560000 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CHARGE_FULL=7560000 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CHARGE_NOW=4644000 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CAPACITY=61 /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_CAPACITY_LEVEL=Normal /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_MODEL_NAME=Dell /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_MANUFACTURER=SIMPLO /sys/class/power_supply/BAT0/uevent:POWER_SUPPLY_SERIAL_NUMBER=2959 /sys/class/power_supply/BAT0/voltage_min_design:7400000 /sys/class/power_supply/BAT0/voltage_now:8064000 /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/capacity:88 grep: /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/device: Is a directory /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/model_name:Dell Travel Mouse WM524 /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/online:1 grep: /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/power: Is a directory grep: /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/powers: Is a directory /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/present:1 /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/scope:Device /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/status:Discharging grep: /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/subsystem: Is a directory /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/type:Battery /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/uevent:POWER_SUPPLY_NAME=hid-00:1f:20:e8:4c:97-battery /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/uevent:POWER_SUPPLY_PRESENT=1 /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/uevent:POWER_SUPPLY_ONLINE=1 /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/uevent:POWER_SUPPLY_CAPACITY=88 /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/uevent:POWER_SUPPLY_MODEL_NAME=Dell Travel Mouse WM524 /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/uevent:POWER_SUPPLY_STATUS=Discharging /sys/class/power_supply/hid-00:1f:20:e8:4c:97-battery/uevent:POWER_SUPPLY_SCOPE=Device