MacBook Pro Battery Replacement (Early 2011 to Mid 2012) - YouTube
How to replace the battery in Apple MacBook Pro 15-inch A1417 for model A1398 (Mid 2012) - YouTube
ELECBRAiN New Laptop Replacement Battery for A1278 A1322 [MacBook Pro 13 inch] - (Mid 2009, Mid 2010, Early 2011, Late 2011, Mid 2012), fit MB990LL/A MC724LL/A - [Li-Polymer 6-Cell 66.6Wh 11.1V]
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)
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
Replacement Laptop Battery for Apple MacBook Air 13 inch A1466(Mid 2012, Mid 2013, Early 2014, Early 2015,2017) A1369(Late 2010, Mid 2011 Version) 7200mAh,fits A1496 A1405 A1377 [New Upgraded 3.0] : Amazon.ca: Electronics
How to Replace the Battery in a 15-inch MacBook Pro 2012 (MacBookPro9,1) - YouTube