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iPhone 15 Pro Max Battery Replacement

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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.

Note:Due to Apple's parts pairing restrictions, on iOS 17.6 and earlier, you may receive warnings about your replacement part and lose access to battery health data, but your new battery will otherwise work normally. On iOS 18 and newer, calibrate authentic Apple batteries using Repair Assistant.


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    • Allow your phone's battery to drain below 25%, as a charged lithium-ion battery is a potential safety hazard.

    • Unplug any cables from your phone.

    • Hold the power and either volume buttons and slide to power off your phone.

  1. iPhone 15 Pro Max Battery Replacement, Tape over any cracks: step 2, image 1 of 2 iPhone 15 Pro Max Battery Replacement, Tape over any cracks: step 2, image 2 of 2
    • 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.

    • Make sure there's a smooth area near the bottom edge that's big enough for a suction cup to stick to.

  2. iPhone 15 Pro Max Battery Replacement, Mark your opening picks: step 3, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Mark your opening picks: step 3, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Mark your opening picks: step 3, image 3 of 3
    • If inserted too far, an opening pick can damage your device. Follow this step to mark your pick and prevent damage.

    • Measure 3 mm from the tip and mark the opening pick with a permanent marker.

    • You can also mark the other corners of the pick with different measurements.

    • Alternatively, tape a coin to a pick 3 mm from the tip.

  3. iPhone 15 Pro Max Battery Replacement, Remove the pentalobe screws: step 4, image 1 of 1
    • Use a P2 pentalobe driver to remove the two 7.2 mm-long screws on either side of the charging port.

  4. iPhone 15 Pro Max Battery Replacement, Heat the bottom edge: step 5, image 1 of 1
    • Use a hair dryer or heat gun to heat the bottom edge of the screen until it's hot to the touch.

    • Be careful not to heat the phone hotter than this—the battery is susceptible to heat damage.

  5. iPhone 15 Pro Max Battery Replacement, Insert an opening pick: step 6, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Insert an opening pick: step 6, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Insert an opening pick: step 6, image 3 of 3
    • Apply a suction handle to the bottom edge of the screen.

    • Pull up on the handle with a strong, steady force to create a gap between the screen and the frame.

    • Insert the tip of an opening pick into the gap.

  6. iPhone 15 Pro Max Battery Replacement, Screen information: step 7, image 1 of 1
    • As you slice the adhesive securing the screen in the next steps, be careful of the following areas:

    • 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.

    • 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.

  7. iPhone 15 Pro Max Battery Replacement, Separate the bottom edge adhesive: step 8, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Separate the bottom edge adhesive: step 8, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Separate the bottom edge adhesive: step 8, image 3 of 3
    • Don't insert your opening pick deeper than 3 mm along the bottom edge.

    • Slide your pick back and forth along the bottom edge to separate the adhesive.

    • Leave your pick inserted in the bottom right corner to prevent the adhesive from re-sealing.

  8. iPhone 15 Pro Max Battery Replacement, Heat the right edge: step 9, image 1 of 1
    • Heat the right edge of the screen until it's hot to the touch.

  9. iPhone 15 Pro Max Battery Replacement, Position the opening pick: step 10, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Position the opening pick: step 10, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Position the opening pick: step 10, image 3 of 3
    • Don't insert your pick deeper than 5 mm along the right edge.

    • 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.

    • Rotate your pick so the flat edge is under the screen.

  10. iPhone 15 Pro Max Battery Replacement, Release the right clip: step 11, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Release the right clip: step 11, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Release the right clip: step 11, image 3 of 3
    • Twist the pick to increase the gap between the screen and the frame until the right clip releases.

    • Insert a second opening pick to the right of the first pick.

  11. iPhone 15 Pro Max Battery Replacement, Separate the right edge adhesive: step 12, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Separate the right edge adhesive: step 12, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Separate the right edge adhesive: step 12, image 3 of 3
    • Slide the first pick back to the bottom right corner of the screen.

    • Slide the second pick to the top right corner of the screen to separate the adhesive.

    • Leave these picks inserted to prevent the adhesive from resealing.

  12. iPhone 15 Pro Max Battery Replacement, Heat the top edge: step 13, image 1 of 1
    • Heat the top edge of the screen until it's hot to the touch.

  13. iPhone 15 Pro Max Battery Replacement, Separate the top edge adhesive: step 14, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Separate the top edge adhesive: step 14, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Separate the top edge adhesive: step 14, image 3 of 3
    • Don't insert your pick deeper than 3 mm along the top edge.

    • Slide your pick around the top right corner and along the top edge to release the two clips and adhesive securing it.

  14. iPhone 15 Pro Max Battery Replacement, Heat the left edge: step 15, image 1 of 1
    • Heat the left edge of the screen until it's hot to the touch.

  15. iPhone 15 Pro Max Battery Replacement, Separate the left edge adhesive: step 16, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Separate the left edge adhesive: step 16, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Separate the left edge adhesive: step 16, image 3 of 3
    • Don't insert your pick deeper than 2 mm along the left edge to avoid the two cables connecting the screen to the phone.

    • Rotate your pick around the top left corner of the screen.

    • Slide your pick to the bottom left corner of the screen to separate the adhesive.

  16. iPhone 15 Pro Max Battery Replacement, Swing open the screen: step 17, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Swing open the screen: step 17, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Swing open the screen: step 17, image 3 of 3
    • Gently swing open the screen to the left of the phone.

    • If the screen feels stuck, go back around the perimeter to check for missed sections of adhesive or stuck clips.

    • Rest the screen against a box or similar object so it doesn't strain the cables.

  17. iPhone 15 Pro Max Battery Replacement, Unfasten the logic board cover: step 18, image 1 of 2 iPhone 15 Pro Max Battery Replacement, Unfasten the logic board cover: step 18, image 2 of 2
    • Throughout this repair, keep track of each screw and make sure it goes back exactly where it came from.

    • Use a tri-point Y000 driver to remove the six screws securing the logic board cover:

    • One 2.1 mm‑long screw

    • Five 1.5 mm‑long screws

  18. iPhone 15 Pro Max Battery Replacement, Remove the logic board cover: step 19, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Remove the logic board cover: step 19, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Remove the logic board cover: step 19, image 3 of 3
    • Use tweezers or your fingers to grab and slide the logic board cover toward the bottom of the phone to clear the sensor cable.

    • Remove the cover.

  19. iPhone 15 Pro Max Battery Replacement, Disconnect the battery: step 20, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Disconnect the battery: step 20, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Disconnect the battery: step 20, image 3 of 3
    • Use the tip of an opening pick to pry up and disconnect the battery press connector.

    • To reconnect a press connector, align it over its socket and gently press down on one side until it clicks into place, then press down on the other side. Make sure it sits flat, as the insulating rubber around the sockets might prevent it from connecting fully.

  20. iPhone 15 Pro Max Battery Replacement, Disconnect the ambient light sensor: step 21, image 1 of 2 iPhone 15 Pro Max Battery Replacement, Disconnect the ambient light sensor: step 21, image 2 of 2
    • 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.

  21. iPhone 15 Pro Max Battery Replacement, Disconnect the screen: step 22, image 1 of 2 iPhone 15 Pro Max Battery Replacement, Disconnect the screen: step 22, image 2 of 2
    • Disconnect the screen press connector.

  22. iPhone 15 Pro Max Battery Replacement, Remove the screen: step 23, image 1 of 2 iPhone 15 Pro Max Battery Replacement, Remove the screen: step 23, image 2 of 2
    • Remove the screen.

    • During reassembly, stop here and use this guide to install new screen adhesive.

    • Be careful not to damage any of the spring contacts as you clean the frame.

  23. iPhone 15 Pro Max Battery Replacement, Unfasten the loudspeaker: step 24, image 1 of 1
    • Use your Phillips #000 driver to remove the four screws securing the loudspeaker:

    • Three 2.1 mm screws

    • One 2.9 mm screw

  24. iPhone 15 Pro Max Battery Replacement, Separate the tape: step 25, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Separate the tape: step 25, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Separate the tape: step 25, image 3 of 3
    • A piece of tape connects the top edges of the Taptic Engine and loudspeaker.

    • Insert an opening pick under the tape in the small gap between the Taptic Engine and the loudspeaker.

    • Slide the pick toward the left edge of the phone to separate the tape from the Taptic Engine.

  25. iPhone 15 Pro Max Battery Replacement, Remove the loudspeaker: step 26, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Remove the loudspeaker: step 26, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Remove the loudspeaker: step 26, image 3 of 3
    • Insert the flat end of a spudger between the right edge of the loudspeaker and the frame.

    • Pry up until you can grab the loudspeaker with your fingers.

    • Remove the loudspeaker.

  26. iPhone 15 Pro Max Battery Replacement, Disconnect the Taptic Engine: step 27, image 1 of 2 iPhone 15 Pro Max Battery Replacement, Disconnect the Taptic Engine: step 27, image 2 of 2
    • Use the tip of your spudger to pry up and disconnect the Taptic Engine press connector.

  27. iPhone 15 Pro Max Battery Replacement, Remove the grounding clip: step 28, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Remove the grounding clip: step 28, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Remove the grounding clip: step 28, image 3 of 3
    • Remove the two screws securing the grounding clip:

    • One 1.2 mm Phillips #000 screw

    • One 1.9 mm tri-point Y000 screw

    • Use tweezers to remove the grounding clip.

  28. iPhone 15 Pro Max Battery Replacement, Unfasten the Taptic Engine: step 29, image 1 of 1
    • Remove the two screws securing the Taptic Engine:

    • One 2.9 mm Phillips #000 screw

    • One 3.8 mm standoff screw

    • If you don't have a standoff driver, you may use a thin flathead driver—but be careful not to strip the shallow notches in the screw heads.

  29. iPhone 15 Pro Max Battery Replacement, Remove the Taptic Engine: step 30, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Remove the Taptic Engine: step 30, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Remove the Taptic Engine: step 30, image 3 of 3
    • Insert the flat end of a spudger between the left edge of the Taptic Engine and the frame.

    • Pry up until you can grab the Taptic Engine with your fingers.

    • Remove the Taptic Engine.

  30. iPhone 15 Pro Max Battery Replacement, Adhesive information: step 31, image 1 of 1
    • Three sections of stretch release adhesive secure the battery to the frame—two along the bottom and one on top.

    • Each strip has a black pull tab at its end, which is lightly adhered to the edge of the battery.

    • In the following steps, you'll pull each tab out from underneath the battery.

    • The strips loosen when stretched, but might break off before you can fully remove them, especially the top edge strip. If any break, don't worry! Keep reading for an alternate way to remove the battery.

  31. iPhone 15 Pro Max Battery Replacement, Separate the pull tabs: step 32, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Separate the pull tabs: step 32, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Separate the pull tabs: step 32, image 3 of 3
    • Don't puncture or dent the battery with your tool, as it can leak dangerous chemicals or catch fire if damaged.

    • Use the tip of an opening pick to gently unstick an edge of an adhesive pull tab from the edge of the battery.

    • Use blunt nose tweezers to grip the edge of the pull tab and pull it completely off the edge of the battery.

    • Repeat for the other two pull tabs.

  32. iPhone 15 Pro Max Battery Replacement, Remove the stretch release adhesive: step 33, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Remove the stretch release adhesive: step 33, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Remove the stretch release adhesive: step 33, image 3 of 3
    • 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.

    • Hold the phone steady using the edges of the frame—don't press down on the battery.

    • Pull the strip slowly, evenly, and at a low angle without dragging on other components.

    • Continue pulling, re-gripping or wrapping it around your tool as you go, until the strip fully releases from under the battery.

    • If the strip breaks off, try to retrieve it. If you can't grip it from under the battery, move on to the next step.

    • Repeat this step for the other two strips.

  33. iPhone 15 Pro Max Battery Replacement, Alternate method to remove the battery: step 34, image 1 of 2 iPhone 15 Pro Max Battery Replacement, Alternate method to remove the battery: step 34, image 2 of 2
    • If you removed all three stretch release adhesive strips, congratulations—you can now remove the battery! If not, follow the next two steps to separate the adhesive with isopropyl alcohol and a plastic card.

    • If the top strip remains, prop up the top edge of the phone.

    • If either of the bottom strips remain, prop up the left edge of the phone (the side with the volume buttons).

    • Use a pipette or syringe to apply a few drops of highly-concentrated isopropyl alcohol (over 90%) to the elevated edge of the battery.

    • Wait one minute for the isopropyl alcohol to flow under the battery and soften the adhesive.

  34. iPhone 15 Pro Max Battery Replacement, Pry up the battery: step 35, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Pry up the battery: step 35, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Pry up the battery: step 35, image 3 of 3
    • Don't bend or crease your battery. If the adhesive feels stubborn, apply a few more drops of isopropyl alcohol and try again.

    • Insert the short edge of a plastic card between the bottom edge of the battery and the frame.

    • Be careful not to scrape the frame underneath the battery—the wireless charging coil is exposed near the center.

    • Gently pry up the battery until the adhesive fully separates.

    • Depending on how strong your adhesive is, this may take some time. Allow up to a minute of constant pressure for the adhesive to loosen.

  35. iPhone 15 Pro Max Battery Replacement, Remove the battery: step 36, image 1 of 3 iPhone 15 Pro Max Battery Replacement, Remove the battery: step 36, image 2 of 3 iPhone 15 Pro Max Battery Replacement, Remove the battery: step 36, image 3 of 3
    • Remove the battery.

    • To install a new battery:

    • Clean your frame with isopropyl alcohol and a lint-free or microfiber cloth.

    • 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.

    • Check out this guide to apply new stretch release adhesive strips to your battery, if it doesn't already come with adhesive installed.

    • If you don't have stretch release adhesive, use thin, double-sided tape to secure it.