Calibrating your MacBook's battery can get tedious because it can take a long time to get through the whole process of draining your battery completely. You need to charge up your MacBook, leave it plugged in for at least 2 hours, then drain the battery until the laptop shuts down from lack of power. In this state, the MacBook should rest for at least 5 hours. After that, it can be used regularly.
If this process takes too long, we suggest trying to tax the battery as much as you can so that it goes by quicker. We run the Cathode app to do this, coupled with the following battery settings so that the battery gets drained quicker.
Select the maximum brightness of your display. If you've got a Mac with two graphic cards, install the GfxCardStatus app. Once it's installed, select the 'NVidia Only' option from the Magic Menu drop down. Alternatively, you could play some games on your MacBook or edit some really large photo files. Anything that usually takes a lot of processing power, via the CPU or the graphic card, will drain your battery quickly. With the above settings, calibrating a MacBook's battery can take only a few hours instead of a whole day.