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.
• 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.
• MacBook Pro Compatibility
This battery is compatible with the aluminum unibody MacBook Pro, introduced in October 2008.
