A1278 A1322 Battery for MacBook Pro 13″ Unibody (Mid 2009 to Mid 2012) MacBook Pro 13″ A1278 [Mid 2012 2010 2009 Early 2011 Late 2011]

A1278 A1322 Battery Compatible with MacBook Pro 13″ Unibody (Mid 2009 to Mid 2012) MacBook Pro 13″ A1278 [Mid 2012 2010 2009 Early 2011 Late 2011] 661-5229 661-5557 020-6547-A 020-6765-A 10.95V/63.5WH This battery is designed for Apple MacBook Pro 13-inch Unibody (A1278, Mid 2009 – Mid 2012) models. It is a built-in lithium-polymer battery used in older MacBook Pro systems, providing stable and efficient power for office work, browsing, media playback, and general computing. The most common part number is A1322, also compatible with Apple identifiers such as 020-6765-A, 661-5559, 661-6074, and 661-5393 depending on production batch and model configuration.