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Apple MacBook Air review (13-inch, mid 2011) - The Verge
MacBook Air 2010 11″ and 13″ Battery Life Better Than Advertised | OSXDaily
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
Awesome Battery Life - The 2013 MacBook Air Review (11-inch)