Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
Amazon.com: A1502 Replacement Laptop Battery for MacBook Pro Retina 13 Inch Late 2013 Mid 2014 Early 2015; MacBook Pro A1493 A1582 Battery EMC 2678 2875 2835 ME864 ME865 : Electronics
MacBook Pro (Retina, 13-inch, Mid 2014) - Technical Specifications
NEW Battery A1493 Apple MacBook Pro 13" Retina A1502 Late 2013 Mid 2014 | eBay
A1582 A1502 Replacement Battery A1502 for MacBook Pro 13 inch Retina [Early 2015, Mid 2014, Late 2013 Version] A1493
MacBook Pro with Retina display review (13-inch, 2015) | Engadget
Amazon.com: A1502 Replacement Laptop Battery for MacBook Pro Retina 13 Inch Late 2013 Mid 2014 Early 2015; MacBook Pro A1493 A1582 Battery EMC 2678 2875 2835 ME864 ME865 : Electronics
Amazon.com: iFixit A1502 A1493 Battery for MacBook Pro 13" Retina (Late 2013 /Mid 2014) - Repair Kit : Electronics