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Apple Notebook Batteries
With a little bit of care, you can maximize the life of your Apple notebook battery. Most importantly, always use your Apple notebook in its comfort zone for temperature. Never leave it locked in a hot trunk during the summer.

Be sure to fully charge your portable when you plug it in for the first time, and then run Software Update to ensure that you have the latest software. Apple periodically releases updates that may improve battery performance.

For proper maintenance of a lithium-based battery, it is important to keep the electrons in it moving. Apple does not recommend leaving your notebook plugged in all the time. If you use a desktop computer at work, and save a notebook for infrequent travel, Apple recommends charging and discharging the battery at least once a month.

A properly maintained Apple notebook battery is designed to retain up to 80% of its original capacity at 300 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs.