The Rechargeable Battery for Black 13-Inch MacBook from Apple is a rechargeable, 55-watt-hour lithium-polymer battery for the Black 13" MacBook notebook computer. The battery is identical to the one that ships with the laptop, allowing it to serve as a spare or a replacement. It features integrated charge indicator LEDs to give you an idea of its current capacity. This is an excellent solution for anyone who needs to replace their MacBook battery or would simply like a spare for extended usage away from a power source.

• Spare Battery

Having an extra battery lets you double the time you can use your computer without plugging in, all you have to do is keep a spare charged battery in your carrying case and you will be set for long meetings or flights.

• LED Display

Integrated charge indicator LEDs on the battery provide users with an easily visible display of the battery's remaining power.

• Rechargeable

The Lithium-Polymer battery is easily rechargeable. Just plug the laptop into a power source with the battery installed and it will charge. This allows you to operate your computer off power and charge your battery at the same time.