Description
Home / Samsung Repair Singapore / Samsung S21 Ultra Battery Replacement
Parkway Parade
Parkway Parade, 80 Marine Parade Rd, #B1-45 S449269
Bugis Village
Bugis Village, Cheng Yan place #01-106 (Beside DBS ATM) S188541
AMK Central
AMK Central - #01-2533 (Blue Counter Opp MaxiCash) 703 Ang Mo Kio Ave 8, S560703
Jurong East
Jurong East - WestGate 03-K2 (Outside Singtel) 3 Gateway S608532
Same-Day Phone Repair Available
Samsung S21 Ultra Battery Replacement Singapore
Is your Samsung S21 Ultra battery draining too fast? Certified Phone Repair SG offers professional battery replacement with Grade A batteries, same-day service, and a 90-day warranty. Walk in to any of our 4 outlets — no appointment needed.
Launched in 2021, many Galaxy S21 Ultra phones are now several years into their original 5,000 mAh battery — a fresh Grade A cell brings back proper all-day use.
About the Samsung S21 Ultra Battery
The Galaxy S21 Ultra (SM-G998) was released in January 2021 with a 6.8-inch WQHD+ Dynamic AMOLED 2X display at up to 120Hz, an ultrasonic in-display fingerprint sensor and support for the S Pen (sold separately). Its 5,000 mAh battery charges at up to 25W wired, with wireless and reverse wireless charging.
Typical signs of an aged S21 Ultra battery are rapid drain, the phone heating up during charging, shutting down at a moderate percentage or a screen that starts to lift from a swelling cell. After replacement your data, fingerprint and settings stay as they were.
Repair time: 30–45 minutes | Warranty: 90 days
On an older S21 Ultra, a curved screen separating from the frame often means the battery underneath is swelling. Stop charging the phone, don’t press the screen back down or try to prise it open, keep it out of heat and bring it in quickly.
View all Samsung repairs.
Why Choose Certified Phone Repair SG?
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Warranty
90 Days
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Repair Time
30-45 Min
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Parts
Grade A
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No Fix
No Fee
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Frequently Asked Questions
Is there a warranty?
Yes — 90-day warranty on parts and workmanship.
