wmbattery(1x) on Linux
The text d8210b1ffa08, as Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
dockable battery monitor
Flags it lists
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-a -
-b -
-c -
-d -
-e -
-g -
-h -
-l -
-s -
-w