Macbook / OSX / MacOS Battery Health Logger

battery_logger.sh

#!/bin/bash

LOG="$HOME/log/battery.log";

# create TSV headers if log file does not exist
if [ ! -f "$LOG" ]; then
	echo "Creating Log File";
	echo -e "Date\tCurrent Charge\tMax Charge\tCycle Count\tCondition\tAmperage\tVoltage" > "$LOG";
fi;

DATE="$( date +%s )";
REMAINING="$( system_profiler SPPowerDataType | grep 'Charge Remaining' | awk '{ print $4 }' )";
CAPACITY="$( system_profiler SPPowerDataType | grep 'Full Charge Capacity' | awk '{ print $5 }' )";
CYCLES="$( system_profiler SPPowerDataType | grep 'Cycle Count' | awk '{ print $3 }' )";
CONDITION="$( system_profiler SPPowerDataType | grep 'Condition' | awk '{ print $2 }' )";
AMPS="$( system_profiler SPPowerDataType | grep 'Amperage' | awk '{ print $3 }' )";
VOLTS="$( system_profiler SPPowerDataType | grep 'Voltage' | awk '{ print $3 }' )";

echo -e "$DATE\t$REMAINING\t$CAPACITY\t$CYCLES\t$CONDITION\t$AMPS\t$VOLTS" >> "$LOG";