New A1331 6-cell li-ion rechargeable battery pack for Apple MacBook Pro 13", 15", 17", MacBook Air 13" series laptops. The battery is made of A-Grade battery cells and rated at 5800 mAh. 100% compatibility with OEM equipment is guaranteed. The battery is designed to power up the following Apple notebook models:

MacBook Unibody 13"

MacBook Pro Unibody 15"

MacBook Air 13"

MacBook Air 13" MC234LL/A

MacBook Air 13" MC233LL/A

MacBook Pro 13"

MacBook Pro 13" MC375LL/A

MacBook Pro 13" MC374LL/A

MacBook Pro 15"

MacBook Pro 15" Unibody

MacBook Pro 15" MB986LL/A

MacBook Pro 15" MB985LL/A

MacBook Pro 15" MB471LL/A

MacBook Pro 15" MB470LL/A

MacBook Pro 15" MB134LL/A

MacBook Pro 15" MB133LL/A

MacBook Pro 15" MC373LL/A

MacBook Pro 15" MC372LL/A

MacBook Pro 15" MC118LL/A

MacBook Pro 17"

MacBook Pro 17" MB766LL/A

MacBook Pro 17" MB076LL/A

MacBook Pro 17" MC226LL/A

MacBook Pro 17" MC024LL/A

and more models.

Best replacement for the following OEM battery part numbers: A1331, A1342, 661-5391, 020-6580-A, 020-6582-A, 020-6809-A, 020-6810-A