• Compatible With: Apple MacBook Pro 13-inch A1278 (Mid 2009, Mid 2010, Early 2011, Late 2011, Mid 2012) • Capacity: 63.5Wh / 5500mAh • Cell Type: Lithium-Polymer (6-Cell) • Grade: Grade A Cells • Safety: CE / RoHS Certified • Tested Before Dispatch: Yes • Warranty: 6 Months • Condition: Brand New • In the Box: 1x Replacement Battery