MacBook Pro 15" Unibody 2.53 GHz Mid 2009 Battery Replacement

Step 1 Lower Case

• Remove the following ten screws securing the lower case to the upper case:
• Seven 3 mm Phillips screws.
• Three 13.5 mm Phillips screws.
Step 2

• Using both hands, lift the lower case near the vent to pop it off two clips securing it to the upper case.
• Remove the lower case and set it aside.
Step 3 Battery

Tool used on this step:
P6 Pentalobe Screwdriver 2009 15" MacBook Pro Battery
$5.49
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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.
Step 4
• Remove the two exposed five-point Pentalobe screws along the top edge of the battery.
Step 5
• Use the tip of a spudger to bend back the finger of the "Warning: Do not remove the battery" sticker while you remove the five-point Pentalobe screw hidden underneath.
Step 6
• Lift the battery by its plastic pull tab and slide it away from the long edge of the upper case.
• Do not try to completely remove the battery just yet.
Step 7
• Tilt the battery back enough to access the battery cable connector.
• Pull the battery cable connector away from its socket on the logic board and remove the battery from the upper case.
• If you're installing a new battery, you should calibrate it as soon as possible.

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Walter Galan

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