TWB Premium Grade Generic Laptop Battery For MacBook A1331/A1342 TWB Batteries are the perfect choice that you can make for your computer. Very affordable, The best quality batteries on the market. Long Life durable Battery for your Laptop Apple A1331 Description Compatible laptop model APPLE: APPLE A1342 APPLE MacBook Unibody 13 APPLE MacBook Pro 15 APPLE MacBook Pro Unibody 15 APPLE MacBook Pro 17 APPLE MacBook Air APPLE MacBook Air MC234LL/A 13.3-Inch APPLE MacBook Air MC233LL/A 13.3-Inch APPLE MacBook Pro 13.3-Inch APPLE MacBook Pro MC375LL/A 13.3-Inch APPLE MacBook Pro MC374LL/A 13.3-Inch APPLE MacBook Pro 15 series APPLE MacBook Pro MB985LL/A 15.4-Inch APPLE MacBook Pro MC118LL/A 15.4-Inch APPLE MacBook Pro MC373LL/A 15.4-Inch APPLE MacBook Pro MC372LL/A 15.4-Inch APPLE MacBook Pro MB986LL/A 15.4-Inch APPLE MacBook Pro MB133LL/A 15.4-inch APPLE MacBook Pro MB471LL/A 15.4-Inch APPLE MacBook Pro MB134LL/A 15.4-inch APPLE MacBook Pro MB470LL/A 15.4-Inch APPLE MacBook Pro 17 series APPLE MacBook Pro MC024LL/A 17-Inch APPLE MacBook Pro MC226LL/A 17-Inch APPLE MacBook Pro MB076LL/A 17-inch APPLE MacBook Pro MB766LL/A 17-Inch APPLE MacBook Pro MB604LL/A 17-Inch Compatible Battery models APPLE: A1331 cell quanity = Li-polymer???855268*3? Battery capacity = 10.95V 63.5WH Package includes: 1x Laptop Battery What's in the box 1 X Laptop Battery