iPhone 12 Pro Max Battery

Before You Begin

Warning

  • A battery should be replaced only by individual technicians with the knowledge and experience to repair electronic devices. Improper battery replacement, improper handling of parts, or failure to follow the provided instructions could result in fire, injury, data loss, or damage to the device, parts, or other property.

  • Read Battery Safety and follow workspace and battery handling guidelines before you begin.

Remove the following parts before you begin:

Tools

  • 6.7-inch repair tray

  • Battery press

  • ESD-safe cleaning solution

  • ESD-safe tweezers

  • Ethanol wipes or isopropyl alcohol (IPA) wipes

  • Heat-resistant gloves

  • Nitrile or lint-free gloves

  • Nylon probe (black stick)

  • Safety glasses with side shields

  • Sand

  • Sand container

Caution

To avoid damaging the lenses, don’t touch the TrueDepth camera assembly or nearby parts.

Important

  • If you replace this part, it is recommended to run Repair Assistant in order to finish the repair. Repair Assistant will be available on the device after you’ve completed all reassembly steps.

  • This procedure requires a replacement battery shim, which is available with a replacement speaker, Taptic Engine , or battery.

Removal

  1. Place the enclosure in the repair tray with the Lightning connector facing the cutout.

  2. Use ESD-safe tweezers to grasp the bottom right battery adhesive tab. Gently peel the adhesive tab away from the battery.

    • Warning: Don’t scrape or puncture the battery with the tweezers.

    • Important: Peel the adhesive tab completely away from the battery before continuing to step 3.

  3. Hold down the iPhone. Use ESD-safe tweezers to grasp the bottom half of the battery adhesive tab and slowly pull it outward.

  4. Keep the tweezers close and parallel to the battery and twist until you see white adhesive strip on the tweezers.

    • Important: Don’t pull the tweezers until the white adhesive is wrapped around them.

  5. Pull the tweezers toward the bottom of the iPhone and continue to twist the adhesive strip until you’ve removed the entire strip.

    • Caution: Don’t pull the adhesive strip against parts or screws.

    • Important: If the battery adhesive tab or strip breaks off and you can still see it, attempt to retrieve it with the tweezers. Wrap the tab or strip around the tweezers and repeat steps 4 and 5. If you can’t see the tab or strip, continue to step 6.

  6. Use ESD-safe tweezers to grasp the bottom left battery adhesive tab. Gently peel the adhesive tab away from the battery.

    • Important: Peel the battery adhesive tab completely from the battery before continuing to step 7.

  7. Repeat steps 3 through 5 to remove the bottom left adhesive strip from the battery. If you remove the entire strip, continue to step 8.

    • Important: If the battery adhesive tab or strip breaks off and you can still see it, attempt to retrieve it with the tweezers. Wrap the tab or strip around the tweezers and repeat steps 4 and 5. If you can’t see the tab or strip, continue to step 8.

  8. Rotate the repair tray and put on the nitrile or lint-free gloves.

  9. Use ESD-safe tweezers to gently peel both battery adhesive tabs from the top of the battery.

  10. Hold down the iPhone. Use ESD-safe tweezers to grasp one battery adhesive tab. Twist the tweezers to wrap the adhesive strip around them.

    • Important: Hold the tweezers close and parallel to the battery as you twist.

  11. Keep the tweezers in the channel between the battery and the shim. Continue to slowly twist the tweezers until you’ve removed the entire adhesive strip.

    • Important: If the battery adhesive tab or strip breaks off and you can still see it, attempt to retrieve it with the tweezers. Wrap the tab or strip around the tweezers and repeat step 11. If you can’t see the tab or strip, continue to step 12.

  12. Repeat steps 10 and 11 to remove the remaining adhesive strip from the top of the battery. If you remove the entire strip, continue to step 13.

    • Important: If the battery adhesive tab or strip breaks off and you can still see it, attempt to retrieve it with the tweezers. Wrap the tab or strip around the tweezers and repeat step 11. If you can’t see the tab or strip, continue to step 13.

  13. If all four battery adhesive strips were fully removed, continue to step 15. If at least one strip was fully removed, continue to step 14.

    • Warning: If all four strips were broken and can’t be retrieved, don’t forcibly pry the battery. Stop the repair. You can find a service option at support.apple.com/repair.

  14. Insert the flat end of the black stick only into one of the insertion points as shown. Ensure that the black stick is inserted into a point where the battery strip has been fully removed. Don’t insert the black stick into a point where the battery tab or strip is broken.

    • Caution: When using the black stick to remove the battery from the enclosure, don’t damage the flex cables. Don’t scrape, rip, tear, or otherwise damage the polyester film or other areas. If damage occurs, replace the iPhone.

  15. Slightly lift the battery with the black stick just enough to grasp underneath the battery.

    • Caution: To avoid damage, don’t press the black stick on the edge of the enclosure as you lift the battery.

  16. Remove the battery from the enclosure. Then inspect the enclosure for damage. If the enclosure is damaged, replace the iPhone.

    • Warning: If you can’t remove the battery, stop the repair. You can find a service option at support.apple.com/repair.

Reassembly

  1. Use ethanol wipes or IPA wipes on the area shown in blue to remove all remaining adhesive from the enclosure.

    • Caution: Don’t use ethanol wipes or IPA wipes on the areas outlined in red. Ethanol or isopropyl alcohol may damage the polyester film and wireless charging unit.

    • Warning: Inspect the enclosure for loose or extra screws and small parts, which can damage the battery and cause safety issues.

  2. Reinstall the Taptic Engine . Then continue to step 3.

    • Important: Ensure that a new super screw is installed in the top right corner of the Taptic Engine .

  3. Complete speaker reassembly steps 1 through 4. Then continue to step 4.

  4. Remove the adhesive release liner from the replacement battery shim.

  5. Position the replacement battery shim on the top edges of the Taptic Engine  and speaker. Ensure that the adhesive side of the shim faces the Taptic Engine  and speaker.

  6. Use the flat end of the black stick to adhere the battery shim to the Taptic Engine  and speaker.

  7. Peel the pink release liner from the underside of the replacement battery.

    • Important: Don’t remove the battery protective cover from the top of the battery yet.

  8. Hold the battery over the enclosure with the protective cover faceup. Align the bottom of the battery with the Taptic Engine  (1) and the right edge with the enclosure (2). Then lower the battery into the enclosure.

  9. The center of the repair tray has two slots. Position the repair tray and enclosure onto the battery press with the left slot over the pin.

  10. Flip down the red lever at the top of the battery press to lower the roller onto the battery.

  11. Slide the repair tray back and forth through the battery press three times to adhere the battery to the enclosure.

  12. Flip up the red lever at the top of the battery press.

  13. Position the repair tray and enclosure onto the battery press with the right slot over the pin.

  14. Flip down the red lever at the top of the battery press.

  15. Slide the repair tray back and forth through the battery press three times to adhere the battery to the enclosure.

  16. Flip up the red lever at the top of the battery press.

  17. Remove the repair tray from the battery press.

  18. Hold the edges of the protective cover. Pull the release tabs on the protective cover to remove the cover from the battery.

    • Important: Don’t press the area over the tab you’re releasing.

    • Caution: Don’t touch the grounding springs near the Taptic Engine .

Reinstall the following part to complete reassembly:

Warning

Gently shake the iPhone. If the battery sounds loose, remove the display and the battery. Then complete battery reassembly with another replacement battery.

Important

  • A new battery is not charged. After you’ve completed all removal and reassembly steps, charge the device for a few minutes.

  • After you’ve completed all reassembly steps, Repair Assistant will be available on the device and is recommended to finish the repair. Learn how to initiate Repair Assistant.

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