Amazon.com: A1382 Battery for MacBook Pro 15 inch A1286 Early 2011 Late 2011 Mid 2012 New Replacement Laptop Battery (7200mAh 10.95V/78.84Wh 25 Months Warranty) : Electronics
Batteries for MacBook Pro 15" Unibody 2011 - 2012 Models
NewerTech® : Batteries : NuPower® Battery for MacBook Pro 13" Retina late 2012 to early 2013 Models
Amazon.com: Temark New A1382 Battery for MacBook Pro 15 inch A1286 (only for Early 2011, Late 2011, Mid 2012), fit MC721LL/A MC723LL/A 661-5844 020-7134-A : Electronics
Replace your 2009-2012 MacBook Pro HD with an SSD
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
A1382 Battery for Apple MacBook Pro 15 inch A1286 (Early /Late 2011 Mid 2012) | eBay
Apple Has Fully Restored Inventory of Mid 2012 and Early 2013 MacBook Pro Batteries - MacRumors
NewerTech® : Batteries : NuPower® Battery for MacBook Pro 15" Retina mid 2012 to early 2013 Models
2012 Macbook Pro 15" A1286 Battery Replacement - YouTube