Ultimate Repair Hub · DIY Guide
iPhone 15 Pro Max Battery Replacement
On the iPhone 15 Pro Max the battery comes out through the front: the screen, bottom speaker and Taptic Engine come out first, then three stretch-release strips let go of the battery.
- Difficulty
- ●●●●○Difficult
- Time
- 60–90 min
- Steps
- 14
- Opens from
- Front (screen)
DIY guide — for informational purposes only. This is not a substitute for professional diagnosis, and repairs are performed at your own risk. Ultimate Wireless Solutions is an independent repair provider and is not affiliated with Apple Inc.
Tools
- Pentalobe screwdriver P2
- Tri-point screwdriver Y000
- Phillips screwdriver #000
- Heat pad, iOpener or heat gun on low
- Suction cup and thin plastic opening picks
- Blunt tweezers (for the adhesive strips)
- Nylon spudger and ESD-safe tweezers
- Isopropyl alcohol (90%+) and lint-free wipes
- Clamps or a screen press
- Safety glasses, and a metal can of sand for the old battery
Parts
- iPhone 15 Pro Max replacement battery (adhesive included)
Open the screen
Power off and remove the bottom screws
Back up and power the phone off. Remove the two P2 pentalobe screws on either side of the USB-C port. Tape over cracked glass first so it doesn’t flake and the suction cup can grip.
Power off and remove the bottom screws1 photo · Tap image to enlarge Soften the adhesive
Warm the edges of the screen evenly for 2–3 minutes. The glass should feel hot but still comfortable to hold.
Soften the adhesive1 photo · Tap image to enlarge Cut the adhesive around the sides and top
Lift near the bottom edge with a suction cup, slide a pick in and cut up both long sides, stopping at the antenna lines. Keep the pick shallow so you don’t catch the cables or Face ID parts.
Slide the display a millimeter or two toward the bottom of the phone to release the top clips, then cut across the top. Don’t lift the bottom edge more than about 5°.
Cut both long sides first, then slide the screen down slightly and cut the top. Open the display like a book
The display stays attached by short cables along one long edge, and that edge acts as the hinge. Lift the free edge and open it like a book. Support it so the cables aren’t holding its weight.
Open the display like a book1 photo · Tap image to enlarge Disconnect the battery, then the display
Remove the 6 tri-point screws from the logic board cover. Tilt the cover up, making sure its tab clears the display cable, then slide it out from under the light sensor cable without tearing that cable.
Unplug the battery cable first, then the display and light sensor cables.
Disconnect the battery, then the display2 photos · Tap image to enlarge Set the display aside
Lift the display away and lay it face down on a clean, soft surface.
Set the display aside1 photo · Tap image to enlarge
Remove the battery
Remove the bottom speaker
Remove the 4 Phillips screws from the bottom speaker. Lift it slightly with tweezers by a screw hole, separate the thin battery shim from the top of the speaker with a spudger, and lift the speaker out.
Remove the bottom speaker2 photos · Tap image to enlarge Remove the Taptic Engine
Remove the 2 Phillips screws from the Taptic Engine and the 1 tri-point screw from its grounding spring; lift the spring out and keep it (replace it if it’s bent). Remove the 1 screw, unplug the Taptic Engine cable and lift out the Taptic Engine with its battery shim.
Remove the Taptic Engine3 photos · Tap image to enlarge Pull the two bottom adhesive strips
Hold the phone down. Peel one bottom tab fully off the battery before you start twisting, wrap it around blunt tweezers until white adhesive shows, then keep the tweezers low and pull toward the bottom of the phone, twisting as you go, until the strip slides out. Repeat with the other bottom strip.
Keep the tweezers low and parallel to the battery. Strip positions simplified. Pull the top strip
Turn the phone around. Peel the top tab off the battery and wrap it around the tweezers, then pull slowly at a low angle along the channel between the battery and the camera, toward the top speaker. Don’t pull it straight up and don’t touch the Face ID camera.
Lift the battery out
If a strip broke and you can’t reach it, slide the flat end of a spudger only under a spot where a strip already came out and lift gently; never pry where adhesive is still attached. If all three strips broke, stop and bring it to a shop. Put the old battery in a metal can of sand.
Lift the battery out1 photo · Tap image to enlarge
Install and close
Clean the bay and seat the new battery
Wipe leftover adhesive from the bay with alcohol, avoiding the thin plastic film. Check for loose screws. Apply the new battery’s adhesive, line it up and press it down firmly across the whole cell.
Rebuild and close
Reinstall the Taptic Engine and its grounding spring and the bottom speaker. Reconnect the display and light sensor cables, then the battery cable last, and refit the logic board cover. Lay fresh display adhesive, close and clamp the screen, and reinstall the bottom screws.
Test and finish
Charge for a few minutes before powering on. An aftermarket battery shows as an unknown part under Settings › General › About › Parts & Service History; that’s expected.
Want it done in 30 minutes?
Bring your iPhone 15 Pro Max to our Tustin store. We handle the disposal and the seal for you.
Facts checked against Apple’s iPhone 15 Pro Max repair manual. These guides are for informational purposes and repairs are done at your own risk. Ultimate Wireless Solutions is an independent repair shop and is not affiliated with Apple Inc.