Apple APLLE MACBOOK manual To calibrate your battery

To calibrate your battery:

1Plug in the power adapter and fully charge your MacBook battery until the light on the power adapter plug changes to green and the Battery icon in the menu bar indicates that the battery is fully charged.

2Allow the battery to rest in the fully charged state for two hours or longer. You may use your computer during this time as long as the adapter is plugged in.

3Disconnect the power adapter with the MacBook on and start running it from the battery. You may use your computer during this time.

When your battery gets low, you’ll see the low battery warning dialog on the screen.

4Continue to keep your computer turned on until it goes to sleep. Save your work and close all applications when the battery gets low and before the system goes to sleep.

5Turn off the computer or allow it to sleep for five hours or longer.

6Connect the power adapter and leave it connected until the battery is fully charged again.

Important: Repeat the calibration process every two months or so to keep your battery fully functioning. If you use your MacBook infrequently, it’s best to recalibrate the battery at least once a month.

If you purchased additional batteries, repeat the calibration procedure with those batteries as well. For more information, see “Using Your Battery” on page 74.

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Chapter 1 Getting Started