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crwdns2944351:0crwdnd2944351:0Samsung Galaxy S21 Battery Replacementcrwdnd2944351:0crwdne2944351:0

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Introduction
Use this guide to remove or replace the [product|IF358-000|battery] in your Samsung Galaxy S21.
***For your safety, discharge the 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]].
Although it’s not necessary to remove the interconnect cables to replace the battery we advise doing so. It makes the battery removal and the reassembly much easier.
You'll need replacement adhesive in order to complete this repair.
Conclusion
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.***
After completing this guide, [[Battery Calibration|calibrate your newly-installed battery]].
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/GalaxySamsung%20S2020Galaxy%20S21|Answers community] for troubleshooting help.