MacBook Pro 16" 2021 Battery Replacement

Use a P5 Pentalobe driver to remove eight screws securing the lower case:

Four 9.1 mm screws

Four 5 mm screws

Press a suction handle into place near the front edge of the lower case, between the screw holes.

Pull up on the suction handle to create a small gap under the lower case.

Insert an opening pick into the gap you just created.

Slide the opening pick around the nearest corner and then halfway up the side of the MacBook Pro.

Repeat the previous step on the other side, using an opening pick to to release the second clip.

Pull firmly to slide the lower case towards the front edge of the MacBook (away from the hinge area) to separate the last of the clips securing the lower case.

Pull first at one corner, then the other.

Remove the lower case.

Set it in place and align the sliding clips near the display hinge. Press down and slide the cover toward the hinge. It should stop sliding as the clips engage.

When the sliding clips are fully engaged and the lower case looks correctly aligned, press down firmly on the lower case to engage the four hidden clips underneath. You should feel and hear them snap into place.

Peel back any tape covering the battery board data cable connector on the logic board.

Use a spudger to gently pry up the locking flap on the ZIF connector for the battery board data cable.

Disconnect the battery board data cable by sliding it out from its socket on the logic board.

Use a T3 Torx driver to remove the two 2.1 mm‑long screws securing the trackpad cable bracket to the logic board.

Use tweezers, or your fingers, to remove the trackpad cable bracket.

Use the flat end of a spudger to pry up and disconnect the trackpad cable's press connector from the logic board.

Peel the trackpad cable away from the device, making sure to separate the adhesive.

Peel back any tape covering the battery board data cable connector under the large pancake screw.

Use a spudger to gently pry up the locking flap on the ZIF connector for the battery board data cable.

Disconnect the battery board data cable by sliding it out from its socket on the battery board.

Slide blunt nose tweezers under areas with adhesive to separate the cable from the device.

Remove the battery board data cable.

Use a T5 Torx driver to remove the 3.9 mm pancake screw securing the battery power connector.

Use a spudger to lift the battery power connector, disconnecting the battery.

Use a T5 Torx driver to remove the 13 screws securing the trackpad assembly:

Ten 5 mm screws

Three 5.8 mm screws

Swing the display open slightly, but keep the MacBook upside-down. The trackpad assembly should separate and lay flat on the display.

Carefully feed the trackpad's ribbon cable through its slot in the frame.

Remove the trackpad assembly.

Use a T5 Torx driver to remove the two screws securing the battery board:

One 4.4 mm screw

One 3.8 mm screw

There are eight adhesive strips that are accessed from the bottom of the device.

There are six more adhesive strips accessed from the trackpad's location on the frame.

Use tweezers, or your fingers, to grasp the black pull-tab on one of the adhesive strips.

Pull the strip out slowly and steadily at a low angle. Give it plenty of time to stretch and un-stick from under the battery.

If the adhesive strip breaks off, try to retrieve it using your fingers or blunt tweezers, and continue pulling—but do not pry under the battery.

Repeat the process for all 14 stretch release adhesive strips.

Apply a few drops of high concentration (over 90%) isopropyl alcohol to the gaps surrounding the affected area of the battery.

Wait between one to two minutes for the adhesive to loosen.

Insert a plastic card between the battery and the frame.

Pry up with the card while slicing the adhesive to separate the battery from the frame.

Slide the battery out of the frame to remove it.