MacBook Pro Battery Replacement (Early 2011 to Mid 2012) - YouTube
Amazon.com: Fancy Buying A1278 A1322 MacBook pro Battery Replacement 13 inch Mid 2012 2010 2009 Early 2011 Late 2011-10.95V/63.5WH : Electronics
Amazon.com: 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) : Electronics
2012 Macbook Pro 15" A1286 Battery Replacement - YouTube
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