#!/bin/sh

echo "battery discharge started at `date`"

sysctl -q \
	hw.battery.chargestart=0 \
	hw.battery.chargestop=100 \
	hw.battery.chargemode=-1

while true; do
	REM=`sysctl -n hw.sensors.acpibat0.watthour3 | sed 's/ .*//'`

	if [ "$REM" = "0.00" ]; then
		break
	fi

	sleep 10
done

echo "battery discharge finished at `date`, starting recharge"

sysctl -q hw.battery.chargemode=1 \
	hw.battery.chargestop=91

echo "battery status: `sysctl -n hw.sensors.acpibat0.raw1`"