Apple MacBook Pro A1321 Battery (15″ A1286)

A1321 A1286 (Mid 2009 Mid 2010) Laptop Battery for MacBook Pro 15 Inch Battery A1321 A1286 MC371LL/A, MC372LL/A, MC118LL/A, MB985LL/A, MB986LL/A, MB986LL/A MC373LL/A, MC373LL/A, MB985, MB986, MC118 This battery is designed for Apple MacBook Pro 15-inch Unibody (A1286, Mid 2009 – Mid 2010) models. It is a built-in high-capacity lithium-polymer battery used in older MacBook Pro systems, providing stable power for office work, browsing, media playback, and general computing. The most common part number is A1321, also compatible with Apple identifiers such as 661-5211, 661-5476, 020-6380-A, and 020-6766-B depending on production batch and model configuration.