SOLVED: Switch battery connector on the battery itself (A1321) - MacBook Pro 15" Unibody Mid 2010 - iFixit
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HSW 10.8v laptop battery for Apple MacBook 13" A1181 laptop battery A1185 MA561 MA566 MA255 MA472 MA699 MA700 MA701 battery - AliExpress
SOLVED: Battery Connector Pinout and Voltage - MacBook Pro 15" Unibody Late 2008 and Early 2009 - iFixit
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