How to replace the battery of an iPhone 14
The base iPhone 14 introduces a redesigned frame that can also be opened from the back: battery replacement is more accessible compared to previous models. This guide explains the step-by-step procedure. Average time for an experienced technician: 25-35 minutes. Difficulty: medium.
Warnings Before You Start
- ALWAYS disconnect the battery connector before touching other components.
- Never puncture or bend the lithium cell: fire risk. If a pull tab breaks, use moderate heat and a plastic spudger.
- With a battery using a non-original BMS, the 'Important Battery Service' warning will appear: use self-diagnosing cells or a BMS programmer.
Required Parts
Recommended Tools
- Pentalobe P2 screwdriver
- Tri-wing Y000 screwdriver
- Phillips #00 screwdriver
- Suction cup + thin opening picks
- Heating plate or hot air
- Antistatic tweezers
- Replacement battery adhesive strips
Step-by-Step Procedure
- 1
Turn off the phone and remove the pentalobe screws
Fully power off the device. On the bottom edge, on either side of the Lightning connector, remove the 2 P2 pentalobe screws and set them aside separately.
- 2
Heat the edges and open the display like a book
Heat the perimeter of the display to 70-80°C for 2-3 minutes (heating plate or hot air). Apply the suction cup above the bottom area, create a gap, and insert a pick; run it along the sides to cut through the adhesive. Open the screen like a book up to ~90°, supporting it with a stand.
💡 Tip: Do not exceed 80°C: risk of permanent stains on the OLED and damage to the flex cables. - 3
Disconnect the battery connector
Remove the metal bracket covering the connectors (tri-wing Y000 screws). Using a spudger, lift the battery connector: this is the first step to work safely and avoid short circuits.
- 4
Disconnect the display connectors and remove the screen (if needed)
If you need to fully clear the battery compartment, remove the display connector cover (Phillips #00 screws) and disconnect the display flex cables. Set the screen aside on an antistatic surface.
- 5
Release the battery adhesive tabs
Under the battery are the stretch-release adhesive tabs. Pull them parallel to the battery's plane, slowly and steadily, one at a time. Do not pull at an angle or they will break.
💡 Tip: If a tab breaks, stop: heat to ~60°C for 2 minutes under the battery and gently lift with a plastic spudger. Never puncture the lithium cell. - 6
Remove the old battery
Once all tabs are released, the battery comes out without force. If you feel resistance, apply a bit more heat. Do not pry with metal tools on the cell.
- 7
Clean the housing and apply the new adhesive tabs
Remove any adhesive residue from the housing with 99% isopropyl alcohol and an antistatic cloth. Apply the new adhesive tabs to the replacement battery, then position the battery aligning the connector.
- 8
Reconnect, verify readings, and close up
Connect the battery connector (and display flex cables if removed). Turn on the device and check the Battery Health status in settings. If you use a self-diagnosing battery or an original Service Pack, the 'Non-original battery' warning will not appear. Close with new perimeter adhesive and reinsert the pentalobe screws.
💡 Tip: Aftermarket batteries with a generic BMS display the 'Important Battery Service' warning: to avoid this, use self-diagnosing cells (JCID/DEJI) or a BMS programmer (JC, MAGICO, AIXUN).
Frequently Asked Questions
How much does an iPhone 14 battery cost for a B2B repairer?
On InParts, the iPhone 14 battery starts at around €18 (B2B). Self-diagnosing versions (without battery warning) cost a few euros more.
Is it true that the iPhone 14 opens from the back?
Yes, the base iPhone 14 model (not Pro) has a redesigned frame that allows opening from the rear glass, simplifying certain repairs. The iPhone 14 Pro and Pro Max, however, still open from the display.
How do I avoid the 'non-original battery' warning?
Use an original Service Pack battery, or a self-diagnosing cell (JCID/DEJI), or clone the original BMS with a programmer (JC, MAGICO, AIXUN).
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