Amazon.com: A1494 Laptop Battery for MacBook Pro 15 inch Retina A1398 Late 2013 Mid 2014 Early 2015 Version, ME293 ME294 MGXA2 MGXC2 MJLQ2 MJLT2 MJLU2 : 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
How to Replace the Battery in a MacBook Pro Retina 13-inch (late 2012 - early 2013) MacBookPro10,2 - YouTube
Amazon.com: A1502 Replacement Laptop Battery for MacBook Pro Retina 13 Inch Late 2013 Mid 2014 Early 2015; MacBook Pro A1493 A1582 Battery EMC 2678 2875 2835 ME864 ME865 : Electronics
Amazon.com: A1417 Battery Only for (Mid 2012 & Early 2013) A1398 MacBook Pro - Replacement Battery for A1398 MacBook Pro 15-inch Retina (Mid 2012, Early 2013 Version) - EMC 2512 or 2673 [11.26V/99Wh] : Electronics
MacBook Pro Battery Replacement Kits - 100% Apple Compatible
NewerTech® : Batteries : NuPower® Battery for MacBook Pro 13" Retina late 2012 to early 2013 Models
Apple Has Fully Restored Inventory of Mid 2012 and Early 2013 MacBook Pro Batteries - MacRumors
MacBook Pro (Retina, Mid 2012) Battery Replacement - YouTube
iFixit: New MacBook Pro has first 'DIY-friendly' battery replacement design since 2012 - 9to5Mac