How to Replace the Battery in an 11-inch MacBook Air (2011) MacBookAir4,1 - YouTube
Amazon.com: E EGOWAY A1466 Laptop Battery for MacBook Air 13 inch A1466 A1369, fits A1377 A1405 A1496 (53.28Wh/7200mAh) : Electronics
Amazon.com: A1820 New Laptop Battery Replacement for Apple MacBook Pro 15 inch A1707 Late 2016 / Mid 2017 EMC 3072 EMC 3162 MLH32LL/A MLH42LL/A MPTR2LL/A MPTT2LL/A : Electronics