Iphone 14 Pro Max Battery Replacement

iPhone 14 Pro Max Battery Replacement

Source: https://www.ifixit.com/Guide/iPhone+14+Pro+Max+Battery+Replacement/153006
Category: Repairs
Type: External SOP

Summary

Step-by-step procedure to replace the battery in an iPhone 14 Pro Max. Discharge battery below 25% before starting. Replacement adhesive is required for reassembly; note that IP rating will not be restored after repair.

Procedure

  1. Power off the iPhone completely before beginning.
  2. Remove two 6.8 mm pentalobe P2 screws from the bottom edge.
  3. Mark opening picks at 3 mm from the tip to prevent inserting too deep.
  4. If screen is cracked, cover with clear packing tape before proceeding.
  5. Heat the bottom edge with a hair dryer for ~90 seconds until slightly too hot to touch.
  6. Apply suction to the bottom of the screen and pull up to create a gap; insert an opening pick under the plastic bezel.
  7. Heat and slice adhesive around the right edge, top edge, and left edge sequentially — do not insert pick more than 3 mm. Do not insert pick along the left edge cable area; instead, twist two picks simultaneously at the bottom-left corner to release clips.
  8. Open the screen by swinging it up from the right side like a book. Lean it against something stable.
  9. Remove 8 screws securing the battery connector cover using a Y000 screwdriver (5× 1.3 mm, 2× 1.6 mm, 1× 1.9 mm). Track each screw by location.
  10. Slide off the battery connector cover using tweezers.
  11. Disconnect the battery cable by prying straight up with a spudger. Bend connector away from the board to prevent accidental contact.
  12. Disconnect both display cables by prying straight up. When reconnecting, press one side down until it clicks, then the other — do not press the middle.
  13. Remove the screen.
  14. Remove the loudspeaker: unscrew 4 Phillips screws (1.5 mm), pry up from bottom-right corner, tilt to separate from adhesive strip, remove.
  15. Disconnect and remove the Taptic Engine: disconnect connector, remove 1× 1.8 mm and 1× 2.3 mm Phillips screws plus 1× 2.9 mm standoff screw, then lift out. Transfer adhesive-backed strip to replacement part if needed.
  16. Peel up all four battery adhesive pull-tabs (two on bottom edge, two on top edge) using blunt tweezers.
  17. Pull each strip slowly at a low angle toward the bottom of the iPhone. Keep strips flat; do not press down on the battery.
  18. If strips break: apply 90%+ isopropyl alcohol under the battery edge near broken adhesive, wait 1 minute, then gently lift with an opening pick or spudger. Never forcefully lever or puncture the battery.
  19. Remove the battery. Wipe out any remaining isopropyl alcohol before installing the new battery.
  20. Reassemble in reverse order. Apply new adhesive after cleaning surfaces with 90%+ isopropyl alcohol.
  21. Power on and test all functions before sealing the screen.
  22. Perform a force restart after full reassembly.
  23. Calibrate the battery after repair. On iOS 18+, use Apple’s Repair Assistant: Settings → General → About → Parts & Service History → Restart & Finish Repair.

Notes

  • Do not begin disassembly until battery is below 25% charge. If battery is swollen, take additional precautions.
  • Do not insert any pick more than 3 mm to avoid damaging internal cables and sensors.
  • On iOS 17.6 and earlier, a battery “genuineness” warning may appear even with authentic parts — can be safely ignored if device functions normally.
  • Resealing the device will not restore the original IP rating.
  • Screw lengths differ significantly — keep all screws organized by location throughout the repair.
  • Do not puncture, deform, or forcefully pry the battery at any point.
  • Do not reinstall a damaged or deformed battery.