#!/bin/sh
while :; do
    capacity=$(cat /sys/class/power_supply/BAT0/capacity 2>/dev/null || echo n/a)
    temp=$(awk '{printf "%d", $1/1000}' /sys/class/thermal/thermal_zone0/temp 2>/dev/null || echo n/a)
    datetime=$(date +'%a %d %b %T')

    echo "${capacity}% | ${temp}C | ${datetime}"
    sleep 1
done