MacBook Pro 13" Retina Display Late 2012 Battery Replacement - iFixit Repair Guide
Amazon.com: NinjaBatt Battery Replacement A1618 A1398 for Apple MacBook Pro Retina 15" [Mid 2015 Year ONLY]- Long Lasting [11.36V/99.5Wh] : Electronics
Amazon.com: A1417 Laptop Battery Replacement for MacBook Pro 15 Inch Retina A1398 (2012 Early-2013 Version), Replacement ME665LL/A ME664LL/A MD831LL/A MC975LL/A MC976LL/A : Electronics
Amazon.com: iFixit A1398 A1494 Battery for MacBook Pro 15" Retina (Late 2013/Mid 2014) - Repair Kit : Electronics
Amazon.com: POWERWOO A1502 A1582 Battery for MacBook Pro 13 inch Retina (Early 2015, Mid 2014, Late 2013) A1493 Battery Replacement - High Performance [11.42V/ 74.9Wh] : Electronics
Fixing Apple's Unfixable MacBook Pro with Retina Display | iFixit News