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Introduction |
| Replacing the battery on the iPhone 4S requires minimal disassembly. If your battery is swollen, [https://www.ifixit.com/Wiki/What_to_do_with_a_swollen_battery|take appropriate precautions|new_window=true]. | | | For optimal performance, calibrate your newly installed battery: Drain battery below 10%, then charge uninterrupted to 100%. | | | [video|https://www.youtube.com/watch?v=i196dj1cZls] |
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