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Introduction |
| iPhone batteries are rated to hold 80% of their capacity for up to 500 charge cycles, which lasts roughly 18-24 months for most users. After that, your iPhone may need to be charged far more frequently, and iOS may warn you that performance is affected (in other words, your phone will run slower). Use this guide to replace your battery and restore your iPhone to like-new performance. | | | If your battery is swollen, [[What to do with a swollen battery|take appropriate precautions|new_window=true]]. | | | This guide instructs you to completely detach the display and remove the lower speaker and Taptic Engine for better access to the battery's adhesive strips. | | | For optimal performance, after completing this guide, [https://www.ifixit.com/Wiki/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%. |
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