Amazon.com: Puredick A1582 A1502 Battery, Replacement Battery A1502 for MacBook Pro 13 inch Retina [ Early 2015, Mid 2014, Late 2013 ] A1493 - High-Performance and Longevity [11.36V 74.9Wh 18Months Warranty] : Everything Else
A1493 New Laptop Battery Replacement for MacBook Pro Retina 13 inch A1502 ( Late 2013, Mid 2014 Version) ME864LL/A ME866LL/A 020-8148,fit to A1493 A1502 [11.34V 71.8WH]
Amazon.com: iFixit A1502 A1493 Battery for MacBook Pro 13" Retina (Late 2013/Mid 2014) - Repair Kit : Electronics
How to check into a free battery replacement for MacBook Pro - 9to5Mac