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Intro History: MacBook Pro 15" Unibody 2.53 GHz Mid 2009 Battery Replacement

Edit by Jeff Suovanen

Edit approved by Jeff Suovanen

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Introduction
Replacing the battery on your MacBook Pro 15" Unibody 2.53 GHz requires a 1.5 mm flathead screwdriver to remove the five-point Pentalobe screws securing it to the upper case.
Use this guide to replace an old or faulty battery. If your battery is swollen, [[What to do with a swollen battery|take appropriate precautions|new_window=true]].