Samsung Galaxy S21 Ultra 5G Battery Replacement
Model SM-G998B · Original Samsung part, professionally fitted
- Samsung authorised service centre
- Original Samsung parts
- Listed on samsung.com as the Durban repair partner
- Serving Umhlanga and Durban since 2007
Book this repair
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Driving a WQHD+ 120Hz screen takes power, and the S21 Ultra's 5000mAh battery has been doing it daily for years now. Charge cycles wear every lithium cell, and the first thing to go is the comfortable buffer you used to end the day with.
An original Samsung battery, fitted by our technicians in Umhlanga, brings that buffer back. Battery and fitting are included together in the price shown.
Signs you need this repair
- Screen-on time is half what it used to be
- Dies overnight even when it went to bed at 50 percent
- Charging stalls or the phone gets hot on the charger
- Battery icon jumps between percentages
Samsung Galaxy S21 Ultra 5G at a glance
| Released | January 2021 |
| Display | 6.8 inch Dynamic AMOLED 2X, 120Hz |
| Battery | 5000mAh |
Common questions
Does the big screen make battery wear worse on the Ultra?
The screen does not wear the battery directly, but a hungry WQHD+ panel means more charge cycles per year than a smaller phone, and cycles are what age the cell. That is why Ultras often need new batteries at the same age as phones with smaller cells.
What happens to the old battery?
We remove it safely and dispose of it through proper recycling channels. Lithium cells should never go into household rubbish, because damaged ones are a fire risk. If your battery was swollen, that disposal matters even more, and it is part of the job rather than your problem.
Could my fast drain be software rather than the battery?
Sometimes a rogue app keeps the phone awake, and settings like WQHD+ resolution with always-on display cost real power. Check your screen-on time against what the phone achieves. If usage looks normal but endurance has collapsed since the phone was new, the battery is the cause.