MacBook Pro 15" Retina (Mid 2012-Early 2013) Battery - iFixit
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
Battery Life - 13-inch Retina MacBook Pro Review (Late 2012)
Køb Batteri til MacBook Pro 15" Retina A1398 Mid 2012 til Early 2013 | SparePart.dk
Battery for MacBook Pro 15" Unibody A1286 Early 2011 to Mid 2012 | Mobile Parts
How to Replace the Battery in the 15-Inch Retina MacBook Pro: EveryMac.com
Amazon.com: Temark A1417 Laptop Battery Compatible with MacBook Pro 15 inch Retina A1398 (Mid 2012 Early 2013), fits for MC975LL/A MC976LL/A ME664LL/A ME665LL/A (8800mAh) : Electronics
How to replace the battery in a mid-2012 Macbook Pro | David Artiss
MacBook Pro 15" Retina (Mid 2012-Early 2013) Battery - iFixit