How to Replace the Battery in a 13-inch Apple MacBook Air (mid 2012) MacBookAir5,2 - YouTube
Amazon.com: iFixit Battery Compatible with MacBook Pro 13" Unibody (Mid 2009 to Mid 2012) : Electronics
Amazon.com: NinjaBatt Battery A1278 A1322 for Apple MacBook Pro 13" [Mid 2012 2010 2009 Early 2011 Late 2011] - High Performance [76.56Wh/11.6Vv] : Electronics
Replacement Laptop Battery for Apple MacBook Air 13 inch A1466(Mid 2012, Mid 2013, Early 2014, Early 2015,2017) A1369(Late 2010, Mid 2011 Version) 7200mAh,fits A1496 A1405 A1377 [New Upgraded 3.0]
hardware - Macbook pro 13" mid-2012 not turning on, no battery leds (battery ok) - Ask Different
Apple MacBook Pro 13" MD101LL-A Battery
A1382 Battery for MacBook Pro 15 inch A1286 Early 2011 Late 2011 Mid 2012 New Replacement Laptop Battery (7200mAh 10.95V/78.84Wh 25 Months Warranty)