Amazon.com: iFixit A1398 A1494 Battery for MacBook Pro 15" Retina (Late 2013/Mid 2014) - Repair Kit : Electronics
MacBook Pro 13" Retina Display Late 2013 Battery Replacement - iFixit Repair Guide
MacBook Pro 13" Retina Display Late 2013 Battery Replacement - iFixit Repair Guide
Amazon.com: iFixit Battery Compatible with MacBook Pro 13" Unibody (Mid 2009 to Mid 2012) : Electronics
Replacing the battery in a Macbook Pro Retina (late 2013) – todbot blog
Teardowns of Late 2013 Retina MacBook Pros Reveal No Improvements in Accessibility - MacRumors
MacBook Pro 15" Retina Display Late 2013 Battery Replacement - iFixit Repair Guide
MacBook Pro 13" Retina Display Late 2013 Battery Replacement - iFixit Repair Guide
Amazon.com: iFixit Battery Compatible with MacBook Pro 15" Unibody (Early 2011-Mid 2012) - Repair Kit : Electronics
Update! Replaced battery with iFixIt kit! : r/macbookpro
Amazon.com: iFixit Battery Compatible with MacBook Pro 15" Retina (Mid 2012/Early 2013) : Electronics
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
Repair: MacBook Pro 15, Late 2013 Battery Replacement [ENGLISH] - YouTube
Replacing Battery for Macbook Pro 15" Late 2013 (iFixit Kit) A1494 - YouTube