running ioreg -l -n AppleSmartBattery -r | grep -i capacity gives me "MaxCapacit...

jhardy54 · on May 5, 2015

Your battery percentage is going to be:

    100 / DesignCapacity * MaxCapacity

Or, in the way that makes way more sense to me:

    MaxCapacity / DesignCapacity * 100

Which, with your results, yields something to the effect of:

    98.68%

It's kind of (read: very) dirty looking, but you can get the same result with:

    echo $(ioreg -l -n AppleSmartBattery -r | grep MaxCapacity | awk '{print $3}') / $(ioreg -l -n AppleSmartBattery -r | grep DesignCapacity | awk '{print $3}') \* 100 | bc -l

cgabios · on May 5, 2015

    ioreg -l -n AppleSmartBattery -r | awk '/MaxCapacity/{mc=$3};/DesignCapacity/{dc=$3};END{print 100*mc/dc}'

critiq · on May 5, 2015

mine is at 103.211