iFixit Replacement Battery for MacBook Pro 13" Unibody A1278 (A1322) — Mid 2009 to Mid 2012, 63.5Wh

Restore portable power to a MacBook Pro 13" Unibody by installing this iFixit replacement battery. Intended for A1278 models from Mid 2009 through Mid 2012, it’s a direct-fit swap for a dead or failing pack. Technical specifications: Part #: 661-5557; Battery Model #: A1322; Watt Hours: 63.5 Wh; Voltage: 10.95 V; Capacity: 5800 mAh (each unit is confirmed to have a capacity greater than 5510 mAh). Compatibility: MacBook Pro 13" Unibody A1278 (Mid 2009 to Mid 2012). This battery is backed by iFixit's 1-Year Battery Warranty.