Introduction
Use this guide to replace the battery in your iPhone 15 Pro Max.
iPhone batteries are rated to hold 80% of their capacity for up to 500 charge cycles, or roughly 18–24 months. If your iPhone needs to be charged more often or runs slower, it might be time to replace the battery.
You'll need replacement screen adhesive to complete this repair. If your new battery doesn't come with adhesive pre-installed, you'll need replacement adhesive for it, as well.
If your battery is swollen, take appropriate precautions.
Due to Apple's parts pairing restrictions, you may receive warnings about your replacement part and lose access to battery health data. Your new battery will otherwise work normally.
What you need
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Unplug any cables from your phone.
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Hold the power and either volume buttons and slide to power off your phone.
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If your screen or back glass is badly cracked, lay overlapping strips of packing tape over the glass to protect yourself and make disassembly easier.
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Measure 3 mm from the tip and mark the opening pick with a permanent marker.
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Use a P2 pentalobe driver to remove the two 7.2 mm-long screws on either side of the charging port.
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Cut two strips of tape, apply them along the long edges of the phone, and fold them over the back glass to secure it.
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Pull the Anti-Clamp's blue handle backward to unlock the arms.
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With the screen facing up, slide the arms over the left edge of your phone, with one suction cup on the screen and the other on the back glass. Center the suction cups near the bottom edge.
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Support your phone so it rests level while between the Anti-Clamp's arms—a small box works well.
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Squeeze the cups together to create suction.
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Pull the blue handle forward to lock the arms.
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Turn the handle one full turn (360 degrees) or until the cups start to stretch.
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As the cups stretch, make sure they stay vertically aligned with each other. If they tend to slip, remove the Anti-Clamp and apply tape for the cups to stick to.
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Use a hair dryer or heat gun to heat the bottom edge of the screen until it's hot to the touch.
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Wait up to a minute for the adhesive to separate and a gap to form between the screen and the frame.
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Insert an opening pick into the gap.
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Remove the Anti-Clamp using the pull tabs on the suction cups.
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Skip the next two steps.
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Use a hair dryer or heat gun to heat the bottom edge of the screen until it's hot to the touch.
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Apply a suction handle to the bottom edge of the screen.
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Pull up on the handle with a strong, steady force to create a gap between the screen and the frame.
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Insert the tip of an opening pick into the gap.
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There are two delicate cables connecting the screen to the phone: one just above the action button, and the other near the middle of the left edge.
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There are multiple spring contacts around the perimeter of the phone. Be extra careful not to insert your pick deeper than suggested in these locations to avoid bending the contacts.
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Slide your pick back and forth along the bottom edge to separate the adhesive.
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Leave your pick inserted in the bottom right corner to prevent the adhesive from re-sealing.
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Slide your pick around the bottom right corner of the screen and toward the power button until you feel a hard stop at a clip securing the screen.
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Rotate your pick so the flat edge is under the screen.
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Twist the pick to increase the gap between the screen and the frame until the right clip releases.
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Insert a second opening pick to the right of the first pick.
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Slide the first pick back to the bottom right corner of the screen.
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Slide the second pick to the top right corner of the screen to separate the adhesive.
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Leave these picks inserted to prevent the adhesive from resealing.
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Slide your pick around the top right corner and along the top edge to release the two clips and adhesive securing it.
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Rotate your pick around the top left corner of the screen.
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Slide your pick to the bottom left corner of the screen to separate the adhesive.
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Gently swing open the screen to the left of the phone.
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Rest the screen against a box or similar object so it doesn't strain the cables.
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Use a tri-point Y000 driver to remove the six screws securing the logic board cover:
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One 2.1 mm‑long screw
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Five 1.5 mm‑long screws
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Use tweezers or your fingers to grab and slide the logic board cover toward the bottom of the phone to clear the sensor cable.
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Remove the cover.
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Use the tip of an opening pick to pry up and disconnect the battery press connector.
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Use the point of a spudger to pry up and disconnect the ambient light sensor press connector from the top left of the logic board.
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Use your Phillips #000 driver to remove the four screws securing the loudspeaker:
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Three 2.1 mm screws
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One 2.9 mm screw
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Insert an opening pick under the tape in the small gap between the Taptic Engine and the loudspeaker.
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Slide the pick toward the left edge of the phone to separate the tape from the Taptic Engine.
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Insert the flat end of a spudger between the right edge of the loudspeaker and the frame.
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Pry up until you can grab the loudspeaker with your fingers.
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Remove the loudspeaker.
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Use the tip of your spudger to pry up and disconnect the Taptic Engine press connector.
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Remove the two screws securing the grounding clip:
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One 1.2 mm Phillips #000 screw
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One 1.9 mm tri-point Y000 screw
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Use tweezers to remove the grounding clip.
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Remove the two screws securing the Taptic Engine:
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One 2.9 mm Phillips #000 screw
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One 3.8 mm standoff screw
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Insert the flat end of a spudger between the left edge of the Taptic Engine and the frame.
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Pry up until you can grab the Taptic Engine with your fingers.
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Remove the Taptic Engine.
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Each strip has a black pull tab at its end, which is lightly adhered to the edge of the battery.
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Use the tip of an opening pick to gently unstick an edge of an adhesive pull tab from the edge of the battery.
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Use blunt nose tweezers to grip the edge of the pull tab and pull it completely off the edge of the battery.
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Repeat for the other two pull tabs.
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Pull one of the pull tabs out from under the battery until you can grip it with your fingers or wrap it around your tool.
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Hold the phone steady using the edges of the frame—don't press down on the battery.
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Pull the strip slowly, evenly, and at a low angle without dragging on other components.
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Continue pulling, re-gripping or wrapping it around your tool as you go, until the strip fully releases from under the battery.
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Repeat this step for the other two strips.
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If the top strip remains, prop up the top edge of the phone.
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If either of the bottom strips remain, prop up the left edge of the phone (the side with the volume buttons).
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Use a pipette or syringe to apply a few drops of highly-concentrated isopropyl alcohol (over 90%) to the elevated edge of the battery.
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Wait one minute for the isopropyl alcohol to flow under the battery and soften the adhesive.
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Insert the short edge of a plastic card between the bottom edge of the battery and the frame.
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Gently pry up the battery until the adhesive fully separates.
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Remove the battery.
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Clean your frame with isopropyl alcohol and a lint-free or microfiber cloth.
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Before applying adhesive, temporarily reconnect your new battery and place it in its recess to check if it fits and that the cable reaches the socket on the logic board. Disconnect the battery before continuing.
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Check out this guide to apply new stretch release adhesive strips to your battery, if it doesn't already come with adhesive installed.
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If you don't have stretch release adhesive, use thin, double-sided tape to secure it.
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To reassemble your device, follow these instructions in reverse order.
For optimal performance, calibrate your newly installed battery after completing this guide.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.
To reassemble your device, follow these instructions in reverse order.
For optimal performance, calibrate your newly installed battery after completing this guide.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.
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