A1286 A1382 Laptop Battery for MacBook Pro 15 inch Early 2011 Late 2011 Mid 2012[10.95V 77.5Wh]
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
Apple Has Fully Restored Inventory of Mid 2012 and Early 2013 MacBook Pro Batteries - MacRumors
Amazon.com: AN·GWEL A1382 A1286 Laptop Battery for MacBook Pro 15 inch Early 2011 Late 2011 Mid 2012 MC721LL/A, MC723LL/A, MD035LL/A,MD318LL/A,MD322LL/A,MD103LL/A,MD104LL/A : Electronics
How to replace the battery in a mid-2012 Macbook Pro | David Artiss