Ok, I installed the new upower package, and it works on my Dell Latitude E5530, now the battery applet shows 100% on full charge.
Here is the output of: upower --dump Device: /org/freedesktop/UPower/devices/line_power_AC native-path: AC power supply: yes updated: mer 23 ott 2013 21:17:09 CEST (117 seconds ago) has history: no has statistics: no line-power online: yes Device: /org/freedesktop/UPower/devices/battery_BAT0 native-path: BAT0 vendor: Sanyo model: DELL NH6K933 serial: 1108 power supply: yes updated: mer 23 ott 2013 21:17:15 CEST (111 seconds ago) has history: yes has statistics: yes battery present: yes rechargeable: yes state: fully-charged energy: 62,16 Wh energy-empty: 0 Wh energy-full: 62,16 Wh energy-full-design: 62,16 Wh energy-rate: 0,0111 W voltage: 12,431 V percentage: 100% capacity: 87,8036% technology: lithium-ion Daemon: daemon-version: 0.9.22 can-suspend: yes can-hibernate: no on-battery: no on-low-battery: no lid-is-closed: no lid-is-present: yes is-docked: no -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1240673 Title: Reports 0% charged for fully charged batteries To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/upower/+bug/1240673/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs