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.
4 Answers
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.
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Huh, this is a really cool directory I never knew about! Thanks! Feb 11, 2018 at 18:09
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In newer Ubuntu (starting from 16.04, I guess), check under Settings -> Power
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Could you be specific about the first version you saw this on? Oct 10, 2018 at 18:56
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According to this article on webupd8, this functionality is planned for Ubuntu 11.10 as part of Ubuntu's new Power Indicator.
if you are using your magic keyboard on Linux (I'm using Ubuntu 20.04), In settings, Select Power Statistics
and look for keyboard