Super-Capacity Laptop Replacement Battery for Apple A1281, 15" New Alum Unibody MacBook Pro Series, Li-Polymer, 10.8V, 5200mAh, 56wHr, 6 Cells, One Year Warranty Replace: A1281 Fit Model: 15" New Alum Unibody MacBook Pro Series Type: Li-Polymer Voltage: 10.8V, Capacity: 5200mAh, Watt Hour: 56wHr