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Introduction |
| If your Galaxy Note9 battery drains quickly, won’t charge, or won’t power on it may be time for a replacement. Follow this guide to install a fresh battery. | | | '''For your safety, discharge your battery below 25% before disassembling your phone.''' This reduces the risk of a dangerous thermal event if the battery is accidentally damaged during the repair. If your battery is swollen, [[What to do with a swollen battery|take appropriate precautions|new_window=true]]. | | | If your battery is swollen, [[What to do with a swollen battery|take appropriate precautions|new_window=true]]. | | | 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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