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.

Image 1/1: Seven 3 mm Phillips screws.
  • Remove the following ten screws securing the lower case to the upper case:

    • Seven 3 mm Phillips screws.

    • Three 13.5 mm Phillips screws.

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Image 1/1: Remove the lower case and set it aside.
  • 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.

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Image 1/1: 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.
  • 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.

It really depends on how thick the 1.5 mm flathead screwdriver is. I tried a low-cost tool and almost destroyed the screw. So be carefull

Paul - Reply

Unfortunately, when I added a second hard drive via these instructions, all went well but Bluetooth is now MIA. Can anyone help?

Peter Payne - Reply

I agree...

I have bought a used MacBook Pro, when problems arise, opening Corps was trying to turn the screw, but with poor quality could not turn a screwdriver, only to ruin the screw. Try to buy ifixit Screwdriver set. Good luck to all and thank you ifixit team for such assistance as ifixit.com. Thank you.

remjok - Reply

Image 1/1:
  • Remove the two exposed five-point Pentalobe screws along the top edge of the battery.

The screws holding my battery were all worn out since an earlier removal. So instead of ruining them even more I put some saran wrap on the tip of my pentalobe driver and gently unscrewed them.

magnus - Reply

I have a problem with these screw. They a completly warn and I need some new ones to fix the new Battery.

Does anyone know which thread it is and which length?

alexanderleith - Reply

Image 1/1:
  • 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.

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Image 1/2: Do not try to completely remove the battery just yet. Image 2/2: Do not try to completely remove the battery just yet.
  • 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.

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Image 1/1: Pull the battery cable connector away from its socket on the logic board and remove the battery from the upper case.
  • 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.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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5 Comments

Changing this battery for a friend went as smooth as silk. I've done this many times before so that was no surprise, but now the battery (bought from ifixit) shows only 85% charge even after being left all night to charge, and the charger stopped charging and shows the light on the charger shows green.

What have we done wrong and what do we need to do about it?

Lord Groundhog - Reply

You need to calibrate the new battery. Charge until it won't charge any more. Unplug the computer and leave it until it puts itself to sleep from low battery. Make sure your settings are as low a threshold as possible (3%) I think is the minimum. Then plug it in and charge back to 100%.

Daniel Henry -

Further note: we tried running off the battery, and when it was at 44% tried to recharge it using another charger that we knew was working. The battery indicator says the battery is not charging.

Lord Groundhog - Reply

Hola buenas. necesito comprar una bateria para mi macbook pro 15", de mediados del 2009, en el que la tapa se abre entera. no se que modelo de bateria es, me podriais decir el nombre o referencia que lleva por favor??? me estoy volviendo loca buscando por internet.

Eugenia Padero - Reply

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