Brand: Apple Part No: A1281, A1286, MB772, MB772*/A, MB772J/A, MB772LL/A Fit Model: MacBook Pro 15" A1286, MacBook Pro 15" Aluminum Unibo, MacBook Pro 15" MB470*/A, MacBook Pro 15" MB470CH/A, MacBook Pro 15" MB470J/A, MacBook Pro 15" MB470LL/A, MacBook Pro 15" MB470X/A, MacBook Pro 15" MB471*/A, MacBook Pro 15" MB471CH/A, MacBook Pro 15" MB471J/A, MacBook Pro 15" MB471LL/A, MacBook Pro 15" MB471X/A, MacBook Pro 15" New Version Volts:10.8 Type:Li-Polymer Capacity: 4600mAh / 49.68Wh Color: Silver Grey; Dimension:248.70 x 80.13 x 11.21mm; GrossWeight: 613.1 NetWeight: 353.1