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はじめに

Use this guide to replace a worn-out or dead battery in your iPhone 14 Pro Max.

iPhone batteries are rated to hold 80% of their capacity for up to 500 charge cycles, which lasts roughly 18-24 months for most users. After that, your iPhone may need to be charged far more frequently, and iOS may warn you that performance is affected (in other words, your phone will run slower).

This guide was created using the A2894 (international) model. If you're fixing a different iPhone 14 Pro Max model, there may be some visual discrepancies, but the procedure should be the same.

For your safety, discharge the battery below 25% before disassembling your device. This reduces the risk of fire if the battery is accidentally damaged during the repair. If your battery is swollen, take appropriate precautions.

Note: After the repair, your iPhone may display a warning about the “genuineness” of the battery, even when using original Apple parts. If your iPhone functions normally, you can safely ignore the warning.

You’ll need replacement adhesive to reattach the battery and the screen when reassembling the device. Your device will function normally, but will most likely lose its IP (Ingress Protection) rating.

  1. iPhone 14 Pro Max Battery Replacement, Remove the pentalobe screws: 手順 1、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Remove the pentalobe screws: 手順 1、 2の画像 2
    • Power off your iPhone before beginning disassembly.

    • Remove the two 6.8 mm-long pentalobe P2 screws at the bottom edge of the iPhone.

  2. iPhone 14 Pro Max Battery Replacement, Heat the bottom edge of the iPhone: 手順 2、 1の画像 1
    • Heating the lower edge of the iPhone helps soften the adhesive securing the screen, making it easier to open.

    • Apply a heated iOpener to the bottom edge of the screen to loosen the adhesive underneath. Apply the iOpener for at least 2 minutes.

    • A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the device. The edge should feel slightly too hot to the touch.

  3. iPhone 14 Pro Max Battery Replacement, Insert an opening pick: 手順 3、 3の画像 1 iPhone 14 Pro Max Battery Replacement, Insert an opening pick: 手順 3、 3の画像 2 iPhone 14 Pro Max Battery Replacement, Insert an opening pick: 手順 3、 3の画像 3
    • Apply a suction handle to the bottom edge of the screen, while avoiding the very edge of the glass.

    • Pull up on the suction handle with firm, constant pressure to create a slight gap between the front panel and rear case.

    • Insert an opening pick into the gap.

    • The adhesive holding the screen in place is very strong; creating this initial gap takes a significant amount of force. If you're having a hard time opening a gap, apply more heat, and gently rock the screen up and down to weaken the adhesive until you create enough of a gap to insert your opening pick.

  4. iPhone 14 Pro Max Battery Replacement, Heat and separate the screen adhesive: 手順 4、 1の画像 1
    • Apply a heated iOpener to the left edge of the screen to loosen the adhesive underneath. Apply the iOpener for at least 2 minutes.

  5. iPhone 14 Pro Max Battery Replacement, Slice the left edge adhesive: 手順 5、 3の画像 1 iPhone 14 Pro Max Battery Replacement, Slice the left edge adhesive: 手順 5、 3の画像 2 iPhone 14 Pro Max Battery Replacement, Slice the left edge adhesive: 手順 5、 3の画像 3
    • Slide the opening pick around the lower left corner and up the left edge of the iPhone, slicing through the adhesive holding the screen in place.

    • Don't insert the pick more than 3 mm inside your phone, or you may damage the display cables.

  6. iPhone 14 Pro Max Battery Replacement, Heat and separate the screen adhesive: 手順 6、 1の画像 1
    • Apply a heated iOpener to the right edge of the screen to loosen the adhesive underneath. Apply the iOpener for at least 2 minutes.

  7. iPhone 14 Pro Max Battery Replacement, Slice the right edge adhesive: 手順 7、 3の画像 1 iPhone 14 Pro Max Battery Replacement, Slice the right edge adhesive: 手順 7、 3の画像 2 iPhone 14 Pro Max Battery Replacement, Slice the right edge adhesive: 手順 7、 3の画像 3
    • Re-insert your pick at the bottom edge of the iPhone, and slide it up the right side to continue separating the adhesive.

    • Don't insert the opening pick more than 3 mm into the iPhone, or you may cause damage to internal components.

  8. iPhone 14 Pro Max Battery Replacement, Heat the top edge of the iPhone: 手順 8、 1の画像 1
    • Apply a heated iOpener to the top edge of the screen to loosen the adhesive underneath. Apply the iOpener for at least 2 minutes.

  9. iPhone 14 Pro Max Battery Replacement, Slice the top edge adhesive: 手順 9、 3の画像 1 iPhone 14 Pro Max Battery Replacement, Slice the top edge adhesive: 手順 9、 3の画像 2 iPhone 14 Pro Max Battery Replacement, Slice the top edge adhesive: 手順 9、 3の画像 3
    • Insert your pick underneath the top right edge of the phone. Slide it around the top-right corner and half way across the top edge stopping right before the earpiece speaker cut-out.

    • Don't insert the pick more than 2 mm or you may damage the front panel sensor array.

  10. iPhone 14 Pro Max Battery Replacement: 手順 10、 3の画像 1 iPhone 14 Pro Max Battery Replacement: 手順 10、 3の画像 2 iPhone 14 Pro Max Battery Replacement: 手順 10、 3の画像 3
    • Insert your pick underneath the top-left edge of the phone. Slide it around the top-left corner and half way across the top edge stopping right before the earpiece speaker cut-out.

    • Again, don't insert the pick more than 3 mm or you may damage the front panel sensor array.

    • Don't try to fully separate the screen yet, as several fragile ribbon cables still connect it to the iPhone's logic board.

  11. iPhone 14 Pro Max Battery Replacement, Open the iPhone: 手順 11、 3の画像 1 iPhone 14 Pro Max Battery Replacement, Open the iPhone: 手順 11、 3の画像 2 iPhone 14 Pro Max Battery Replacement, Open the iPhone: 手順 11、 3の画像 3
    • Open your iPhone by swinging the screen up from the right side, like the front cover of a book.

    • Lean the screen against something to keep it propped up while you're working on the phone.

    • If you don't have anything at hand to lean the screen against, your suction handle can do the trick.

    • During reassembly, lay the screen in position, align the clips along the top edge, and carefully press the top edge into place before snapping the rest of the screen down. If it doesn't click easily into place, check the condition of the clips around the perimeter of the screen and make sure they aren't bent.

    • Use a Y000 screwdriver to remove the eight screws securing the battery connector cover:

    • Six 1.3 mm-long screws

    • One 1.6 mm-long screw

    • One 1.9 mm-long screw

    • Throughout this repair, keep track of each screw and make sure it goes back exactly where it came from to avoid damaging your iPhone.

    • During reassembly, this is a good point to power on your iPhone and test all functions before you seal the screen in place. Be sure to power your iPhone back down completely before you continue working.

  12. iPhone 14 Pro Max Battery Replacement, Remove the battery connector cover: 手順 13、 3の画像 1 iPhone 14 Pro Max Battery Replacement, Remove the battery connector cover: 手順 13、 3の画像 2 iPhone 14 Pro Max Battery Replacement, Remove the battery connector cover: 手順 13、 3の画像 3
    • Grasp the connector cover with a pair of tweezers and slide it downwards to clear the flex cables.

    • Remove the connector cover.

  13. iPhone 14 Pro Max Battery Replacement, Disconnect the battery: 手順 14、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Disconnect the battery: 手順 14、 2の画像 2
    • Use the pointed end of a spudger to disconnect the battery cable by prying the connector straight up from its socket.

    • Try not to damage the black silicone seal surrounding this and other board connections. These seals provide extra protection against water and dust intrusion.

    • Bend the connector slightly away from the logic board to prevent it from accidentally making contact with the socket and providing power to the phone during your repair.

  14. iPhone 14 Pro Max Battery Replacement, Disconnect the display cables: 手順 15、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Disconnect the display cables: 手順 15、 2の画像 2
    • Use the pointed end of a spudger to disconnect the first display cable by prying the connector straight up from its socket.

    • To re-attach press connectors like this one, carefully align and press down on one side until it clicks into place, then repeat on the other side. Do not press down on the middle. If the connector is misaligned, the pins can bend, causing permanent damage.

  15. iPhone 14 Pro Max Battery Replacement: 手順 16、 2の画像 1 iPhone 14 Pro Max Battery Replacement: 手順 16、 2の画像 2
    • Use the pointed end of a spudger to disconnect the second display cable by prying the connector straight up from its socket.

  16. iPhone 14 Pro Max Battery Replacement, Remove the screen: 手順 17、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Remove the screen: 手順 17、 2の画像 2
    • Remove the screen.

    • Apply new adhesive where it's necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

    • During reassembly, pause here if you wish to replace the screen adhesives.

  17. iPhone 14 Pro Max Battery Replacement, Unfasten the loudspeaker screws: 手順 18、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Unfasten the loudspeaker screws: 手順 18、 2の画像 2
    • Use a Phillips driver to remove the four 1.5 mm-long screws securing the loudspeaker:

    • Three smaller-headed screws

    • One larger-headed screws

  18. iPhone 14 Pro Max Battery Replacement, Loosen the loudspeaker: 手順 19、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Loosen the loudspeaker: 手順 19、 2の画像 2
    • Use the flat end of a spudger to pry up and loosen the loudspeaker from the bottom right corner of the phone.

  19. iPhone 14 Pro Max Battery Replacement, Remove the loudspeaker: 手順 20、 3の画像 1 iPhone 14 Pro Max Battery Replacement, Remove the loudspeaker: 手順 20、 3の画像 2 iPhone 14 Pro Max Battery Replacement, Remove the loudspeaker: 手順 20、 3の画像 3
    • Use a pair of tweezers to grab the loudspeaker.

    • Tilt the loudspeaker to separate it from the adhesive-backed strip that leads to the Taptic Engine.

    • Remove the loudspeaker.

    • When reinstalling the loudspeaker, place it in its recess battery-side first to align it with the adhesive-backed strip.

  20. iPhone 14 Pro Max Battery Replacement, Disconnect the Taptic Engine: 手順 21、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Disconnect the Taptic Engine: 手順 21、 2の画像 2
    • Use a spudger to disconnect the Taptic Engine by prying the connector straight up from its socket.

    • Use a Phillips screwdriver to remove two screws securing the Taptic Engine:

    • One 1.8 mm-long screw

    • One 2.3 mm-long screw

    • Use a standoff screwdriver to remove the 2.9 mm-long standoff screw securing the Taptic Engine.

    • Standoff screws are best removed using a dedicated standoff driver or driver bit. In a pinch, a small flathead screwdriver will do the job—but use extra caution to ensure it doesn't slip and damage surrounding components.

  21. iPhone 14 Pro Max Battery Replacement, Remove the Taptic Engine: 手順 23、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Remove the Taptic Engine: 手順 23、 2の画像 2
    • Use a pair of tweezers or your fingers to remove the Taptic Engine.

  22. iPhone 14 Pro Max Battery Replacement, Transfer the adhesive-backed strip: 手順 24、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Transfer the adhesive-backed strip: 手順 24、 2の画像 2
    • If your replacement part didn’t come with the plastic strip along the top of the Taptic Engine, you'll need to transfer it to your replacement part.

    • Use your fingers or a pair of tweezers to gently peel the adhesive-backed strip off of the Taptic Engine.

  23. iPhone 14 Pro Max Battery Replacement, Locate the adhesive pull-tabs: 手順 25、 1の画像 1
    • Four stretch-release adhesive strips secure the battery to the rear case—two on the bottom edge of the battery, and two on the top edge.

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

    • In the following steps, you'll pull each tab to slowly stretch out the adhesive underneath the battery. These "command-strip" style adhesives lose their stick when stretched, so you can remove the battery with ease.

    • If the strips break, don't panic! They don't always work as intended. Keep reading for tips on removing broken strips.

  24. iPhone 14 Pro Max Battery Replacement, Remove the stretch-release adhesive: 手順 26、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Remove the stretch-release adhesive: 手順 26、 2の画像 2
    • Caution: Don't jab the battery with any sharp tools. A punctured battery may leak dangerous chemicals or catch fire.

    • Use a pair of blunt-nosed tweezers to peel down the two battery adhesive pull-tabs along the bottom edge of the battery.

  25. iPhone 14 Pro Max Battery Replacement: 手順 27、 3の画像 1 iPhone 14 Pro Max Battery Replacement: 手順 27、 3の画像 2 iPhone 14 Pro Max Battery Replacement: 手順 27、 3の画像 3
    • Grab the first pull-tab with your fingers or wrap it around a spudger and slowly pull it away from the battery, toward the bottom of the iPhone.

    • Pull hard enough to maintain tension on the strip, but don't force it. Give it plenty of time to stretch and un-stick from under the battery.

    • Don't press down on the battery. Hold the iPhone firmly by its sides.

    • Keep the strip flat and unwrinkled. Try to pull evenly on the whole strip, rather than pulling mainly in the middle or on one side.

    • Pull at a low angle so the strip doesn't snag on the edge of 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.

    • If any of the adhesive strips break off underneath the battery and can't be retrieved, try to remove the other strips, and then proceed as instructed below.

  26. iPhone 14 Pro Max Battery Replacement: 手順 28、 3の画像 1 iPhone 14 Pro Max Battery Replacement: 手順 28、 3の画像 2 iPhone 14 Pro Max Battery Replacement: 手順 28、 3の画像 3
    • Grab the second pull-tab with your fingers or the center of a spudger and pull it away from the battery, toward the bottom of the iPhone.

    • Follow the same procedure as with the previous strip: don't press down on the battery, keep the strip flat and unwrinkled, and pull at a low angle.

    • 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.

    • If the adhesive breaks off underneath the battery and can't be retrieved, continue with the next step.

  27. iPhone 14 Pro Max Battery Replacement: 手順 29、 2の画像 1 iPhone 14 Pro Max Battery Replacement: 手順 29、 2の画像 2
    • Use a pair of blunt-nosed tweezers and an opening pick to peel up the two remaining battery adhesive pull-tabs from the top edge of the battery.

  28. iPhone 14 Pro Max Battery Replacement: 手順 30、 3の画像 1 iPhone 14 Pro Max Battery Replacement: 手順 30、 3の画像 2 iPhone 14 Pro Max Battery Replacement: 手順 30、 3の画像 3
    • Using the same procedure as before, pull the third tab from underneath the battery. Try not to snag the adhesive on anything.

  29. iPhone 14 Pro Max Battery Replacement: 手順 31、 2の画像 1 iPhone 14 Pro Max Battery Replacement: 手順 31、 2の画像 2
    • Pull the remaining adhesive tab using the same procedure. Try not to snag the adhesive on anything.

    • Be careful not to fling the battery from the iPhone as the final adhesive strip comes out.

    • If you removed all the adhesive strips successfully, skip the next step.

    • Otherwise, continue with the next step below.

  30. iPhone 14 Pro Max Battery Replacement, How to remove a stuck battery: 手順 32、 3の画像 1 iPhone 14 Pro Max Battery Replacement, How to remove a stuck battery: 手順 32、 3の画像 2 iPhone 14 Pro Max Battery Replacement, How to remove a stuck battery: 手順 32、 3の画像 3
    • If you're still having trouble removing the battery, apply a few drops of high concentration (90% or higher) isopropyl alcohol under the edge of the battery in the area of the broken adhesive strip(s).

    • Wait about one minute for the alcohol solution to weaken the adhesive.

    • Use an opening pick or the flat end of a spudger to gently lift the battery.

    • Don't try to forcefully lever the battery out. If needed, apply a few more drops of alcohol to further weaken the adhesive. Never deform or puncture the battery with your pry tool.

  31. iPhone 14 Pro Max Battery Replacement, Remove the battery: 手順 33、 2の画像 1 iPhone 14 Pro Max Battery Replacement, Remove the battery: 手順 33、 2の画像 2
    • Remove the battery.

    • Do not reinstall a damaged or deformed battery, as doing so is a potential safety hazard.

    • If there's any alcohol solution remaining in the phone, carefully wipe it off before installing your new battery.

    • If your new battery didn't come with adhesive preinstalled, refer to this guide for help replacing the adhesive strips.

    • Perform a force restart after reassembly. This can prevent several issues and simplify troubleshooting.

終わりに

If possible, turn on your device and test your repair before installing new adhesive and resealing.

To reassemble your device, follow these instructions in reverse order. During reassembly apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

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.

Dominik Schnabelrauch

メンバー登録日: 2016年11月23日

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