#!/bin/bash
[ -f /sys/class/power_supply/BAT0/type ] || exit 1
type=$(</sys/class/power_supply/BAT0/type)
[ "$type" != "Battery" ] && exit 1

cap=$(</sys/class/power_supply/BAT0/capacity)
stat=$(</sys/class/power_supply/BAT0/status)

if [ "$stat" = "Discharging" ]; then
    printf "󰁹 %s%%" "$cap"
elif [ "$stat" = "Charging" ]; then
    printf "󰂄 %s%%" "$cap"
elif [ "$stat" = "Full" ]; then
    printf "󰁹 %s%%" "Full"
else
    printf ""
fi