Improve battery life

battery-life.sh

#!/bin/bash

battery_level=""

function battery() {
    echo $(acpi -b | grep -oE "[0-9][0-9]?%" | grep -oE "[0-9]+")
}

function play_sound() {
    paplay /usr/share/sounds/LinuxMint/stereo/window-slide.ogg &
}

notify-send "Battery Life is running!" "Charging: $(battery)%"

while true; do

    battery_level=$(battery)

    if on_ac_power; then

        if [ "$battery_level" -ge "80" ]; then
            play_sound
            notify-send "Battery is greater than 80%!" "Charging: ${battery_level}%"
        fi

    else

        if [ "$battery_level" -le "40" ]; then
            play_sound
            notify-send "Battery is lower than 40%!" "Charging: ${battery_level}%"
        fi

    fi

    sleep 30

done