Remove the following P5 pentalobe screws securing the lower case to the MacBook Pro:

Eight 3.0 mm

Two 2.3 mm

Lifting from the edge nearest the clutch cover, lift the lower case off the MacBook Pro.

Set the lower case aside.

Peel back the warning label covering the battery connector.

Using the flat end of a spudger, gently pry the battery connector straight up out of its socket on the logic board.

Bend the battery cables back and out of the way, ensuring that the battery connector doesn't accidentally make contact with the logic board.

Use a spudger or tweezers to pry the three AirPort antenna cables straight up off of their sockets on the AirPort board.

Use the tip of a spudger to push the camera cable's plug toward the fan and out of its socket on the logic board.

Insert the flat end of a spudger underneath the rubber heat sink cover on the right fan.

Slide the spudger underneath the length of the cover, releasing the adhesive.

Lift the cover and flip it back so that you can access the cables underneath.

Use your fingers to pull the AirPort/Camera cables up off the fan.

Carefully de-route the cables from the plastic cable guide.

Using the flat end of a spudger, pry the I/O Board connector straight up out of its socket on the logic board.

In a similar fashion, remove the I/O Board cable connector from its socket on the I/O Board.

Remove the I/O Board cable from the MacBook Pro.

Remove the single 2.9 mm T5 (sometimes T6) Torx screw securing the AirPort card to the logic board.

Grasp the sides of the AirPort card and lift it up to a shallow angle (5-10˚) to separate the light adhesive adhering it to the logic board.

Pull the AirPort card parallel out of its connector on the logic board to remove it.

Use the tip of a spudger to flip up the retaining flap on the right fan ribbon cable ZIF socket.

Starting at the top of the cable, slide a plastic opening tool under the right fan cable to free it from the logic board.

Remove the following three screws securing the right fan to the logic board:

One 4.4 mm T5 Torx screw

One 3.9 mm T5 Wide Head Torx screw

One 5.0 mm T5 Torx screw with 2 mm collar

Lift and remove the right fan out from the MacBook Pro.

Use the flat end of a spudger to lift the rubber heat sink cover up off the left fan.

Remove the following three screws securing the left fan to the logic board:

One 4.4 mm T5 Torx screw with 2 mm collar

One 5.0 mm T5 Torx screw with 2 mm collar

One 3.9 mm T5 Wide Head Torx screw

Use the tip of a spudger to flip up the retaining flap on the left fan ribbon cable ZIF socket.

Starting at the top of the cable, slide a plastic opening tool under the left fan cable to free it from the logic board.

Lift the left fan out of the device.

Remove the single 3.1 mm T5 Torx screw securing the SSD to the logic board.

Slightly lift the rightmost side of the SSD and firmly slide it straight away out of its socket on the logic board.

Use the tip of a spudger to flip up the I/O board data cable lock and rotate it toward the battery side of the computer.

Use the flat end of a spudger to slide the I/O board data cable straight out of its socket on the logic board.

Remove the two 3.1 mm T5 Torx screws securing the I/O board to the logic board.

On some models, also removing the silver 3.5 mm T5 Torx screw from the heatsink can aid in I/O board removal.

Carefully lift the I/O board and remove it from the lower case.

Use the flat end of a spudger to pry the headphone jack connector up from its socket on the logic board.

Use the flat end of a spudger to pry the left speaker connector up and out of its socket on the logic board.

Use the tip of a spudger to pry the right speaker connector up and out of its socket on the logic board

Peel back any tape covering the keyboard ribbon cable connector.

Use the flat end of a spudger to flip up the retaining flap on the keyboard ribbon cable ZIF socket.

Use the flat end of a spudger to gently back the keyboard ribbon cable out of its socket by pushing first at one side, then the other.

Use the flat end of a spudger to pry the trackpad ribbon cable connector up from its socket on the logic board.

Use the flat end of a spudger to pry the keyboard backlight connector up from its socket on the logic board.

Use the tip of a spudger or your fingernail to flip up the retaining flap on the microphone ribbon cable ZIF socket.

Pull the microphone ribbon cable out of its socket.

Use the tip of a spudger to pry the display data cable lock and rotate it toward the DC-In side of the computer.

Pull the display data cable straight out of its socket on the logic board.

Use the flat end of a spudger to carefully pry off the rubber screw cap on the raised screw head near to the MagSafe 2 connector.

Remove the following six screws securing the logic board to to the upper case:

One 2.6 mm T5 Torx screw

Two 5.8 mm T5 Torx screws

One 3.8 mm T5 Torx screw

One 5.2 mm Raised Head T5 Torx screw

One 3.5 mm Silver T5 Torx screw

Lifting from the side nearest the battery, rotate the logic board toward the top of the MacBook Pro.

Using the flat end of a spudger, carefully push the MagSafe 2 connector out of its socket on the bottom of the logic board.

Clockwise from top: keyboard, trackpad, battery, right speaker, keyboard backlight, display, microphone, headphone jack, left speaker.

Remove the logic board assembly from the MacBook Pro.

Remove the following three screws securing the left speaker to the upper case:

One 5.6 mm T5 Torx screw

One 6.9 mm T5 Torx screw

One 2.6 mm T5 Torx screw

Lift the left speaker out of the upper case and set it aside.

Remove the following three screws securing the right speaker to the upper case:

One 5.6 mm T5 Torx screw

One 6.9 mm T5 Torx screw

One 2.6 mm T5 Torx screw

Remove the right speaker from the MacBook Pro.

Remove the two 3.9 mm T5 Torx screws securing the battery board.

To protect your display, place a sheet of aluminum foil between the display and keyboard and leave it there while you work.

With the front edge of the MacBook Pro facing you, lift the right side and prop it up at a slight angle, using a sturdy foam block or book.

Now that your MacBook Pro is fully prepped, it's time to prep yourself.

Wear eye protection when handling and applying the adhesive remover. (Eye protection is included in your kit.)

Do not wear contact lenses without eye protection.

Protective gloves are also included in your kit. If you are concerned about possible skin irritation, put your gloves on now.

Pull off the black rubber stopper from your bottle of adhesive remover.

Use scissors to cut off the sealed tip of the applicator.

Apply a few drops of adhesive remover evenly along the elevated edge of the outer right battery cell.

Wait 2-3 minutes for the liquid adhesive remover to penetrate underneath the battery cell before you proceed to the next step.

Slide one corner of a plastic card under the outer edge of the battery cell.

Slide the card farther underneath the battery cell to separate it from the adhesive securing it to the MacBook Pro's upper case.

Lift the battery cell to separate it from the MacBook Pro's upper case, but don't try to remove it.

Leave the plastic card underneath the battery cell to prevent it from re-adhering as you proceed to the next step.

Apply a few drops of adhesive remover evenly along the elevated edge of the next battery cell.

Wait 2-3 minutes for the liquid adhesive remover to penetrate underneath the battery cell before you proceed to the next step.

Slide one corner of your plastic card underneath the second battery cell.

Push the card underneath the second battery cell, and slide it side to side to separate the adhesive underneath.

Leave the plastic card underneath both battery cells (or flip them over) to prevent them from re-adhering as you proceed to the next step.

It's time to switch sides. Remove your book or foam block and place it under the opposite side of your MacBook Pro.

Repeat the procedure from the prior steps to separate the two battery cells on this side:

Apply your adhesive remover to the elevated edge of the outer battery cell, and wait 2-3 minutes for it to penetrate.

Work one corner of a plastic card underneath the battery cell, and slide the card fully underneath the battery cell to separate it.

Do the same for the adjacent cell.

Leave your plastic card in place or flip the battery cells over to prevent them from re-adhering during the following steps.

Remove your book or foam block and place it under the rear edge of your MacBook Pro, near the display hinges.

Grab the battery connector or the top edge of the plastic battery frame and lift it slightly, exposing the top edge of the two center battery cells.

While lifting the plastic battery frame out of the way, apply a few drops of adhesive remover underneath the top edge of each of the two remaining battery cells.

Wait 2-3 minutes for the adhesive remover to penetrate before you continue.

While lifting the plastic frame out of the way, push one corner of your plastic card underneath the outside edge of the first center battery cell.

Slide your card all the way under the battery cell, and leave it to prevent the battery cell from re-adhering.

Repeat the above procedure to separate the last remaining battery cell from the MacBook Pro's upper case.

Lift the battery with the plastic frame and slide it back toward the MacBook Pro’s hinge until it clears the screw posts holding it to the upper case.

Lift and remove the battery.

With a little luck, you can slowly pull out each strip of adhesive with your fingers.

Otherwise, soak each strip of adhesive with a bit of adhesive remover for 2-3 minutes, and then scrape it out with a plastic tool. This can take quite a bit of work, so be patient.

Mop up any remaining adhesive remover and give your MacBook Pro a few minutes to air dry.

Calibrate your newly installed battery: charge it to 100%, and keep charging it for at least 2 more hours. 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%.