A1331 / A1342 / 661-5391 / 020-6580-A / 020-6582-A / 020-6809-A / 020-6810-A. Apple MacBook 13" Laptop Models: A1342 (Onlyfor Late 2009 and Mid 2010). Remove the old battery, carefully install the new battery on the battery case, screw in the screw, and connect the wiring of the new battery.
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