Differences Between Late 2010 and Mid-2011 MacBook Air: EveryMac.com
How To: Replace the battery in your MacBook Air 13" (Early 2015) - YouTube
Battery for MacBook Air 13" A1369 A1405 A1466 Late 2010 Mid 2011-2013 Early 2014 | eBay
Amazon.com: 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 : 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 : Electronics - Amazon.com
MacBook Air (2010-2015): Replacing the battery (tutorial)