How to Replace the Battery in a 15-inch MacBook Pro 2012 (MacBookPro9,1) - YouTube
Amazon.com: iProPower A1382 Battery for MacBook Pro A1286 15" inch Laptop [Only for Early 2011, Late 2011, Mid 2012 Version] High Capacity 7200mAh 10.95V/77.5Wh Replacement Battery : Electronics
MacBook Pro 15" Unibody Battery (A1321) DIY Parts replacement Batteries
6cells 7070mah A1382 Battery For Macbook Pro 15 Inch A1286 (only For Early 2011, Late 2011, Mid 2012),mc721ll/a Mc723ll - Laptop Batteries - AliExpress