CSEXCEL New Laptop Battery for Apple A1382 A1286 (only for Core i7 Early 2011 Late 2011 Mid 2012) Unibody Macbook Pro 15" i7, also fit 661-5476 661-5211+ Free Screwdrivers - 12 Months Warranty Compatible with Apple MacBook Pro 15 inch A1286 (only for Core i7 Early 2011 Late 2011 Mid 2012) And Compatible Part Numbers: A1382 High-Capacity: 6700mAh/73Wh Voltage: 10.95V For your macbook to provide the perfect endurance and 12-month warranty Please confirm that your laptop's model number, the original A1382 battery's part number and your laptop's version correctly match this replacement battery. You can access this information on your computer by: About this Mac --&gt;More info... --&gt;Serial number--&gt;Check your laptop's version on Apple's offical website or Google the serial number