MacBook Pro 15" Retina Top Case w/ Battery (Late 2013 - Mid 2014) - 661-8311
Amazon.com: A1389 A1494 Laptop Battery Replacement for MacBook Pro 15 inch Retina A1398 (Late 2013 & Mid 2014), fit Retina ME293 ME294 MGXA2 MGXC2 MJLQ2 MJLT2 MJLU2 : Electronics
Mid 2014 15" inch Retina MacBook Pro A1398 Battery Replacement Repair - YouTube
MACKTECH A1494 Laptop Battery for MacBook Pro 15 inch Retina A1398 (Only fit Late 2013 Mid 2014 Version), Fit for Retina ME293 ME294 6 Cell Laptop Battery - MACKTECH : Flipkart.com