Comment 1 for bug 1662336

+1
But Users won´t see it until compiled with ``battery=1`` option, which is disabled by default, and in the official builds.

This (+ the icons in the attachment) is what i use in my personal branch.
<Battery>
   <MaximumSize><Variable name="SquareButtonMaximumSize"/></MaximumSize>
   <PixmapUnknown scalemode="TILE">ic_battery_unknown_48px.svg</PixmapUnknown>
   <PixmapCharged scalemode="TILE">ic_battery_charged_48px.svg</PixmapCharged>
   <NumberStates>1</NumberStates>
   <PixmapsCharging scalemode="TILE">ic_battery_charging_%1_48px.svg</PixmapsCharging>
   <PixmapsDischarging scalemode="TILE">ic_battery_discharging_%1_48px.svg</PixmapsDischarging>
</Battery>