#!/bin/sh

battery=$(cat /sys/class/power_supply/BAT0/capacity)

if   [ $battery -gt 80 ]; then
    symbol=
elif [ $battery -gt 60 ]; then
    symbol=
elif [ $battery -gt 40 ]; then
    symbol=
elif [ $battery -gt 20 ]; then
    symbol=
else
    symbol=
fi

echo "${symbol} ${battery}%"