#!/usr/bin/env bash

ac_status=$(cat /sys/class/power_supply/AC/online)
bat_status=$(cat /sys/class/power_supply/BAT0/status)
bat_lvl=$(cat /sys/class/power_supply/BAT0/capacity)
if (("$ac_status" == 0)); then
    echo "$bat_status - $bat_lvl%"
else
    if [ "$bat_lvl" -lt "90" ]; then
        echo "$bat_status - $bat_lvl%"
    fi
fi