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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 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.