Galaxy S21 Fe Battery
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Galaxy S21 Fe Battery Replacement — OEM vs Compatible
Replacing your Galaxy S21 Fe battery takes about 15–20 minutes and restores your phone's full-day charge. Every battery below is tested before shipping and comes with a lifetime warranty.
| Quality | What It Is | Best For |
|---|---|---|
| OEM | Manufacturer-grade cell, original capacity | Matching factory specs exactly |
| Compatible | Third-party cell, same capacity rating | Budget-friendly replacement |
Both options deliver the same rated capacity. The OEM battery uses the same cell manufacturer as the original, while the Compatible option is a reliable third-party alternative at a lower price.
Why Unlockr?
- Ships from Canada — no customs fees, no border delays
- Lifetime warranty on every battery
- Same-day dispatch on orders before 5 PM ET
- Tested before shipping — capacity verification, charge cycle check
Common Questions
Is this compatible with my Galaxy S21 Fe?
Yes — every battery on this page fits the Galaxy S21 Fe (models SM-G990B, SM-G990U, SM-G990W).
Do I need special tools?
You will need a pentalobe screwdriver, suction cup, and a plastic spudger. Our repair tool kit includes everything for this job.
Will this affect my battery health indicator?
The battery health percentage may show as unavailable after replacement. This is normal — it does not affect performance or actual capacity.