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Apple iPhone 11 Pro Max Battery Replacement

Battery Replacement guide for the Apple iPhone 11 Pro Max

Moderate
~48 min
23 steps

Before you begin

Tools

  • P2 Pentalobe screwdriver
  • Y000 Tri-point screwdriver
  • Suction handle
  • Plastic opening picks
  • Spudger
  • Tweezers
  • Heat gun or iOpener

Parts / materials

  • Replacement battery
  • Pre-cut battery adhesive strips
  • Display frame adhesive seal
  • Isopropyl alcohol (90%+)

Safety

  • Discharge the battery below 25% prior to disassembly to prevent fire risk from damage.
  • Wear safety eye protection to guard against unexpected glass fragments.
  • Do not bend or puncture the lithium-ion battery with sharp metal tools.
  • Work in a well-ventilated space away from flammable sources.

Overview

# Apple iPhone 11 Pro Max Battery Replacement Repair Guide Action-specific battery replacement walkthrough for the Apple iPhone 11 Pro Max. About 48 minutes across 23 steps. This DIY guide walks through battery replacement on the Apple iPhone 11 Pro Max (iPhone series phone). Before you open the device, confirm the exact model number on the Apple settings screen or rear housing so your replacement part matches the iPhone 11 Pro Max specifically—not a similar iPhone sibling. Most DIY techs finish this Apple iPhone 11 Pro Max battery replacement in about 48 minutes when parts and tools are ready. Difficulty is rated intermediate for this model. Recommended tools for this Apple iPhone 11 Pro Max job: P2 Pentalobe screwdriver, Y000 Tri-point screwdriver, Suction handle, Plastic opening picks, Spudger, Tweezers, Heat gun or iOpener. Parts and supplies: Replacement battery, Pre-cut battery adhesive strips, Display frame adhesive seal, Isopropyl alcohol (90%+). Power the iPhone 11 Pro Max off completely, remove SIMs/SD cards if present, and work on a clean, well-lit surface with a magnetic mat for screws. If a step feels wrong for your Apple iPhone 11 Pro Max, stop and compare the connector layout to the photos in this guide. When you prefer a same-day pro repair in Seattle instead, LML Repair can handle battery replacement for this model with tested parts and a workmanship warranty.

Step-by-step

  1. 1

    Power Off iPhone

    1 min

    Press and hold the Side button and either Volume button, then slide the screen toggle to completely power down the device.

  2. 2

    Remove Pentalobe Screws

    2 min

    Use a P2 Pentalobe driver to remove the two 6.7 mm screws located on the bottom edge of the frame.

  3. 3

    Heat Bottom Edge

    2 min

    Apply a heated iOpener or heat gun to the lower display edge for two minutes to soften the perimeter adhesive seal.

  4. 4

    Attach Suction Handle

    1 min

    Place a suction cup on the lower half of the screen, just above the bottom speaker grilles.

  5. 5

    Slice Perimeter Seal

    4 min

    Pull up on the suction cup while inserting an opening pick under the frame, then slide it around the bottom and side edges.

  6. 6

    Open Display Assembly

    1 min

    Swing the screen open from the right side like a book, taking care not to strain the internal ribbon cables.

  7. 7

    Remove Logic Board Bracket Screws

    3 min

    Use a Y000 tri-point screwdriver to remove the six screws holding down the main logic board connector cover plate.

  8. 8

    Remove Connector Cover Bracket

    1 min

    Use tweezers to lift the metal shield off the logic board and set it aside.

  9. 9

    Disconnect Battery Cable

    1 min

    Pry the battery connector straight up from its socket on the logic board using the flat end of a spudger.

  10. 10

    Disconnect Display Cables

    2 min

    Use a spudger to disconnect the display, digitizer, and front sensor assembly flex cables from the logic board.

  11. 11

    Separate Display Assembly

    1 min

    Lift the entire display assembly away from the chassis and place it flat on a clean workspace.

  12. 12

    Remove Speaker Bracket Screws

    3 min

    Unscrew the five tri-point screws securing the lower speaker assembly and Taptic Engine brackets.

  13. 13

    Remove Taptic Engine

    2 min

    Disconnect the Taptic Engine cable with a spudger, then lift the unit out to access the lower adhesive strips.

  14. 14

    Unpeel Adhesive Pull Tabs

    2 min

    Use precision tweezers to peel back the black pull tabs located on the top and bottom edges of the battery.

  15. 15

    Pull Battery Adhesive Strips

    5 min

    Slowly pull each stretch-release adhesive tab outward at a low angle until the entire strip releases.

  16. 16

    Remove Depleted Battery

    2 min

    Lift the old battery out of the frame, applying a few drops of isopropyl alcohol underneath if adhesive remains.

  17. 17

    Install New Battery Adhesive

    2 min

    Apply fresh double-sided stretch adhesive strips to the backside of the replacement battery.

  18. 18

    Position New Battery

    2 min

    Align the replacement battery in the housing, connect it briefly to test positioning, then press it firmly down.

  19. 19

    Reinstall Taptic Engine

    3 min

    Set the Taptic Engine and lower speaker back into place, reattach their connector, and secure the screws.

  20. 20

    Reconnect Display Cables

    3 min

    Snap the front sensor, digitizer, display, and battery flex cables back onto their logic board sockets.

  21. 21

    Fasten Cover Bracket

    2 min

    Place the metal logic board shield over the connectors and tighten the six Y000 screws.

  22. 22

    Close Display Assembly

    2 min

    Align the top edge of the display with the frame, then press down around the perimeter until it snaps into place.

  23. 23

    Install Pentalobe Screws

    1 min

    Thread and tighten the two P2 Pentalobe screws back into the bottom of the enclosure.

After your Apple iPhone 11 Pro Max battery replacement

Power the iPhone 11 Pro Max back on and test the battery replacement function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Apple iPhone 11 Pro Max job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.

Keep learning

Explore more Apple iPhone 11 Pro Max repair context in the encyclopedia, or open related DIY guides.

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