A1281 Laptop Battery for Apple 15" New Version MacBook Pro Aluminum Unibody Series 56Whr Type: High performance ultra-density True-Cell(TM) Li-Poly 6-cell 56Whr(5200mAh) battery Compatibility: Apple New Version Aluminum Unibody 15-inch Macbook Pro MB470LL/A and MB471LL/A Battery life: Up to 7.5 hours under minimum load (individual result may vary) Warranty: 12 Months Color: Sliver