The Rechargeable Battery for 17" MacBook Pro from Apple is a rechargeable, 68-watt-hour lithium-polymer battery for the 17" MacBook Pro 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 Pro battery or would simply like a spare for extended usage away from a power source.
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.
Integrated charge indicator LEDs on the battery provide users with an easily visible display of the battery's remaining power.
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.
In the Box
Apple Rechargeable Battery for 17-Inch MacBook Pro