MacBook Pro 17" Unibody Battery Replacement

Remove the following ten screws securing the lower case to the upper case:

Three 13.5 mm Phillips screws.

Seven 3 mm Phillips screws.

Wedge your fingers between the lower case and the vent, and lift upward to release the two clips holding the lower case to the upper case.

Remove the lower case.

Grab the plastic tab attached to the battery connector and pull it toward the front edge of the device.

Remove the three 6.5 mm Tri-point screws securing the battery to the upper case.

Use a plastic opening tool or another soft thin-edged tool to carefully lift up a corner of the "Warning: Do not remove the battery" sticker off the right speaker/subwoofer enclosure.

Peel the sticker off the right speaker/subwoofer enclosure.

Lift the battery by its attached pull tab and remove it from the upper case.

Charge it to 100%, and then keep charging it for at least 2 more hours. Next, unplug and use it normally to drain the battery. When you see the low battery warning, save your work, and keep your laptop on until it goes to sleep due to low battery. Wait at least 5 hours, then charge your laptop uninterrupted to 100%.

If you notice any unusual behavior or problems after installing your new battery, you may need to reset your MacBook's SMC.