SOLVED: Replacement battery has thin film on each section do I need to remove? - MacBook Air 13" Mid 2012 - iFixit
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Amazon.com: A1495 A1406 Laptop Battery for MacBook Air A1465 (Mid 2012 2013 Early 2014 Version), A1370 (Mid 2011 Version) MC968 MD223 MD711 020-7376-A 020-7377-A (7.4V 35WH) : Electronics
M1 MacBook Air battery health at 89% after 11 months, is this even normal or should I get it replaced? - Quora
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