2011 - Mid 2012 non-Retina 15" MacBook Pro battery
Free Batteries Replacement for MacBook Pro 2012-2013 | iGotOffer
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
Apple MacBook Pro 15" Retina A1398 (Mid 2012 - Early 2013) - Battery A1417 HQ | Fixshop
2011 - Mid 2012 non-Retina 15" MacBook Pro battery
MacBook Pro 15" Retina (Mid 2012-Early 2013) Battery - iFixit
How to Replace the Battery on the 2012 Retina MacBook Pro A1398 full tutorial - YouTube