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Aryton
Aug 21, 2014

How to calibrate MacBook battery?

First off, I’m not sure that this is really necessary, but even if it isn’t, it seems like a pretty easy dose of snake oil compared to the cost of a battery replacement for a MacBook. So, what are the steps to calibrate a MacBook battery?

jimlynch
08/26/2014
Apple Portables: Calibrating your computer's battery for best performance
http://support.apple.com/kb/ht1490
becker
08/25/2014

I’m not so sure this is necessary either, but it is easy so what the heck.

1. Plug in to AC and fully charge the battery. Let it “rest” in a fully charged state for 2-3 hours. 

2. Unplug your MacBook and use it until the battery gets low and your MacBook automatically goes into sleep mode. 

3. Leave it in this discharged state overnight (or at least 5-6 hours).

4. Plug it back in and let it charge until it is once again fully charged. 

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