subject: Calibrating a MacBook or MacBook Pro battery [print this page] Repeat the calibration process every two months, or so to keep the battery fully functioning. If you use your MacBook or MacBook Pro infrequently, it's best to recalibrate the battery at least once a month.to Calibrate the battery in your MacBook or MacBook Pro every month or two to keep your battery functioning at its fullest capacity.If you purchased additional batteries, repeat the calibration process with those batteries as well.
