iPhone batteries degrade with use—over time, they lose their ability to hold a full charge. Apple's batteries are rated to hold 80% of their capacity for up to 500 charge cycles, which lasts roughly 18-24 months for most users. When your battery's chemistry is degraded, it may also cause your iPhone to run more slowly. Use this guide to replace your battery and restore your iPhone to full performance.
If your battery is swollen, [[What to do with a swollen battery|take appropriate precautions|new_window=true]].
Note: After the repair, your iPhone may [link|https://www.ifixit.com/News/32343/apple-is-locking-batteries-to-iphones-now|display a warning] about the “genuineness” of the battery, even when using original Apple parts. If your iPhone functions normally, you can safely ignore the warning.
The “battery health” section will not show up after a battery replacement. Apple disables this functionality when you replace the battery yourself.
For optimal performance, after completing this guide, [[Battery Calibration|calibrate]] your newly installed battery: Charge it to 100% and keep charging it for at least two more hours. Then use your iPhone until it shuts off due to low battery. Finally, charge it uninterrupted to 100%.
Remove the pentalobe screws
Mark your opening picks
Tape over any cracks
Anti-Clamp instructions
Heat up the screen
Lift the display slightly
Separate the screen adhesive
Screen information
Open the iPhone
Unscrew the battery connector cover
Disconnect the battery
Unscrew the display connector cover
Disconnect the digitizer
Disconnect the display
Unscrew the logic board connector cover
Disconnect the front sensors
Remove the display assembly
Alternative method to unstick the battery from the case
Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.
To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an [[E-Waste|R2 or e-Stewards certified recycler|new_window=true]].
Repair didn’t go as planned? Check out our [link|https://www.ifixit.com/Answers/Device/iPhone%20XR|Answers community] for troubleshooting help.