I have an Apple Wireless Keyboard and a Magic Trackpad, and I was wondering if there is a way to monitor the battery life remaining/percentage like there is in OSX.
Asked
Active
Viewed 2.2k times
4 Answers
19
There isn't a GUI for read wireless mouse or keyboard battery data.
You can find useful information on sysfs under /sys/class/power_supply/. For example the Apple Wireless Keyboard is under /sys/class/power_supply/hid-78:CA:39:4E:6F:C7-battery/. In the device directory there is a file named capacity, this is a capacity in percents.
So in summary, for reading Apple Wireless Keyboard battery capacity you should do:
cat /sys/class/power_supply/hid-78:CA:39:4E:6F:C7-battery/capacity
Note that hid-78:CA:39:4E:6F:C7-battery can be different for your device.
Daniele Napolitano
- 576
- 3
- 8
-
Huh, this is a really cool directory I never knew about! Thanks! – Ben Kushigian Feb 11 '18 at 18:09
-
My device does not show in power_supply/ what to do? – Ankur Loriya Jul 24 '18 at 14:29
9
In newer Ubuntu (starting from 16.04, I guess), check under Settings -> Power
Here's a screenshot for Ubuntu 16.04 
.
Yuri Baburov
- 191
- 2
- 8
3
According to this article on webupd8, this functionality is planned for Ubuntu 11.10 as part of Ubuntu's new Power Indicator.
Knowledge Cube
- 14,681
- 15
- 80
- 151
0
if you are using your magic keyboard on Linux (I'm using Ubuntu 20.04), In settings, Select Power Statistics and look for keyboard
Sunrays
- 11
- 2