MacBook Pro 15" Unibody 2.53 GHz Mid 2009 Battery Replacement
This guide has been found to be exceptionally cool by the iFixit staff.
- Author: Walter Galan
- Difficulty: Moderate
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.
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Three Pentalobe screws secure the battery to the upper case. They can be removed with this special driver.
If you don't have a Pentalobe driver, a 1.5 mm flathead screwdriver can be used in a pinch. Be sure the head of your flathead screwdriver fits snugly across two of the five "points" of the screw head before trying to break the screw free, as a loose fit will easily strip the screw head. If the head of your screwdriver fits too loosely, find a bigger bit and file it down until it fits snugly before proceeding.
You do not necessarily have to follow steps 3-7 to remove the battery in order to replace the hard drive. However, it is recommended to remove all power sources from electronics before working on them.