Amazon.com: iFixit A1398 A1494 Battery for MacBook Pro 15" Retina (Late 2013/Mid 2014) - Repair Kit : Electronics
Amazon.com: iFixit A1398 A1494 Battery for MacBook Pro 15" Retina (Late 2013/Mid 2014) - Repair Kit : Electronics
SLODA Replacement Battery Suitable for Apple Macbook Pro 15 Retina A1494 (A1398, Late 2013 and Mid 2014) Laptop Battery [Lithium Polymer, 8800mAh - Newegg.com
How to Replace the Battery in the 15-Inch Retina MacBook Pro: EveryMac.com
SNSYIY A1398 MacBook Pro Battery A1494 A1618 Replacement for MacBook Pro 15 Inch Retina A1398 (Late 2013, Mid 2014, Early 2015), Laptop Battery A1494 A1618 8440mAh - Newegg.com
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
Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
Apple MacBook Pro 15-Inch Retina Display (2014) Review | PCMag