Replace Battery on MacBook Air 2012 to 2014 MacBook Air - YouTube
Amazon.com: BatPower A1496 Replacement Laptop Battery for Apple Mid 2013 2014 Early 2014 2015 MacBook Air 13-inch A1466 EMC 2559 EMC 2632 EMC 2925 Battery MacBook Air 13" A1466 Apple A1496 Battery 54.4Wh : Electronics
Replacement Battery for MacBook Air 13 inch A1466 (Mid 2012, Mid 2013, Early 2014, Early 2015,2017) A1369(Late 2010, Mid 2011) 7200mAh Laptop Battery for Apple MacBook Air A1496 A1377 A1405 Battery - Newegg.com
Amazon.com: A1466 A1496 Laptop Battery Replacement for Apple MacBook Air 13 Inch A1369 A1377 A1405 Late 2010 Mid 2011 2012 2013 Early 2014 2015 2017 MacBook Air 6 MJVE2LL/A MD760LL/B MD760LL/A MC503 MC504 : Electronics
MacBook Air 13" Early 2014 Trackpad Replacement - iFixit Repair Guide