Degraded cells in the Samsung Galaxy S25 Ultra lose capacity quietly until the phone cannot hold a useful charge. A new battery is a quick, contained fix that leaves your data untouched. We dispose of the old cell responsibly and fit a fresh one.
- Turnaround: 1 working day, subject to stock and workload
- 6-month warranty on this repair
- Walk-in near Liverpool Street Station or UK mail-in service
Signs your Samsung Galaxy S25 Ultra needs this repair
- Draining far faster than it used to
- Only reliable while plugged in
- Needing a top-up by midday
- Getting warm in normal use
- Percentage jumping around
What is included
- Safe removal of the worn battery
- Fitting of a quality replacement cell
- Charging and power-stability testing
- Full function check before handover
- 6-month warranty
How to confirm your model
Check the model number in your device settings, or bring it in and we will confirm the exact Samsung Galaxy S25 Ultra before any work begins. If you are unsure which repair you need, our team will advise.
Before you book
- If the phone has had liquid exposure, a battery may not resolve everything and we check first.
- If the screen or back is already lifting, the cell may be swollen, so book promptly and avoid charging it.
- If the device is completely dead, we run a quick diagnosis before confirming the battery.
- If we discover water damage during your repair that affects the work, we will stop and let you know. A water damage diagnosis is applicable at the current fee, and we will confirm this with you before we proceed.
Our repair process
- Tell us the fault: choose this repair or ask us to confirm it first.
- Walk in or post it: visit near Liverpool Street Station or send it from anywhere in the UK.
- We repair and test: the work is checked before the device is returned.
- Collect or receive by post: pick up in store or choose tracked return.
Why choose us
- Walk-in and UK mail-in both available
- No data loss, this is a hardware repair
- Every repair tested before it is handed back
- Quality parts matched to your device
Related Samsung Galaxy S25 Ultra repairs
Frequently Asked Questions
Do you recycle the old battery?
Yes, the old cell is disposed of responsibly.
Can I walk in or post it?
Both. Walk in near Liverpool Street Station or post it with tracked return.
How much runtime will I get back?
A fresh cell restores close to original runtime. We fit quality batteries and test charging before returning the phone.
Will I lose my data during a battery replacement?
No. It is a hardware-only procedure and your data stays exactly as it is.
How long does it take?
Often the same day where the cell is in stock. We confirm at booking.
Is the battery replacement guaranteed?
Yes. The warranty for this repair is shown on the page and applies to the fitted battery.