Apple Exchanging Some 2012 and Early 2013 MacBook Pros Needing Battery Service With Newer Models [Updated] - MacRumors
Original A1322 Replacement Battery for Apple MacBook Pro 13 inch A1278 2012 [65Wh/10.95V/6000mAh] - Newegg.com
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 13" Retina Display Late 2012 Battery Replacement - iFixit Repair Guide
Amazon.com: E EGOWAY A1425 Replacement Laptop Battery for MacBook Pro Retina 13 inch A1437 (Late 2012, Early 2013 Version) : Electronics
MacBook Pro 13" A1425 Battery Retina Display (Late 2012 - Early 2013)
Battery Replacement A1437 for MacBook Pro 13" Retina A1425 (Late 2012,Early 2013)