iFixit's new Retina MacBook Pro repair kit lets you change your old battery - The Verge
MacBook Pro 13" Retina Display Early 2015 Battery Replacement - iFixit Repair Guide
MacBook Pro 13" Retina Display Late 2013 Battery Replacement - iFixit Repair Guide
Buy A1502 A1582 Battery, POWERWOO A1493 Battery Replacement for MacBook Pro Retina 13 Inch Late 2013, Mid 2014, Early 2015 High Capacity [6600mAh/ 11.42V /74.9Wh] Online in Vietnam. B086YD4FWX