Samsung Galaxy S25+ Battery Replacement
Compatible models: SM-S936B / SM-S936B/DS
The Galaxy S25+ offers Samsung's largest non-Ultra screen in the S25 range: a 6.7-inch QHD+ Dynamic AMOLED 2X panel with the same Snapdragon 8 Elite chipset. The bigger display and Galaxy AI workloads mean battery wear tends to show earlier than on smaller phones. Screen and battery repairs restore full capability without the cost of a replacement.
- Turnaround: Normally 1 working day pre-order for parts, then same-day fitting once the part has arrived
- 6-month warranty on the replacement battery
- Walk-in near Liverpool Street Station or use our UK mail-in service
Signs your Samsung Galaxy S25+ battery may need replacing
- Battery draining significantly faster than it used to
- Device shutting down unexpectedly, particularly at lower charge levels
- Only running reliably when plugged in throughout the day
- Battery percentage dropping suddenly or behaving inconsistently
- Device running warm during normal use or while charging
- Screen lifting slightly at the edges — this can indicate a swollen battery and requires urgent attention
- Check battery health in Settings > Battery and device care > Battery
What is included
- Careful removal of the existing battery
- Fitting of a quality replacement battery
- Post-repair charging and power stability checks
- Full function test covering power, USB-C charging, speakers and wireless charging where applicable
- 6-month warranty on the replacement battery
How to confirm your model
Go to Settings > About phone > Software information > Model number. This repair covers: SM-S936B / SM-S936B/DS. The Samsung Galaxy S25+ uses USB-C for charging.
Our repair process
- Book or drop in: Book online or visit us near Liverpool Street Station.
- Assessment: We inspect the device before starting. If we find anything unexpected, we tell you before proceeding.
- Battery replacement: We remove the existing battery, fit the replacement, and reassemble carefully.
- Testing: Full post-repair check covering power, charging and all core functions.
- Collect or return post: Pick up in store or we return your device by secure tracked post.
Why choose Square Repair?
- Established repair centre near Liverpool Street since 2015
- 6-month warranty on every battery replacement
- No data loss — battery replacement is a hardware-only procedure
- Transparent pricing with no hidden charges
- Walk-in and UK mail-in options available
Before you book
- If the device has been previously opened, we will advise on any complications before starting
- If there has been liquid exposure, a battery replacement may not resolve all issues
- If the screen is lifting slightly, book as soon as possible as this can indicate a swollen battery
- If the device is completely dead, we carry out a diagnosis before confirming the repair
Related Samsung Galaxy S25+ repairs
- All Samsung Galaxy S25+ repairs
- Samsung Galaxy S25+ screen replacement
- Samsung Galaxy S25+ charging port repair
- Book your battery replacement
- How our repair service works
Book your repair
Booking ahead is recommended so we can confirm part availability. Walk-ins are welcome near Liverpool Street Station, but some repairs may require a 1 working day pre-order. For mail-in repairs, place your order online. Any questions? Contact us.
Frequently Asked Questions
How do I know if my Samsung Galaxy S25+ battery needs replacing?
Rapid drain, early shutdowns, heat during normal use or a screen lifting slightly can all indicate battery failure. Check Settings > Battery and device care > Battery on your Samsung for a health indicator.
Will I lose my data during battery replacement?
No. Battery replacement is a hardware-only repair and does not affect your stored data.
How long does the repair take?
Normally 1 working day pre-order for parts, then same-day fitting once the part has arrived, subject to stock. We confirm the turnaround when you drop in or book.
Can I walk in for a battery replacement?
Yes. Booking ahead is recommended so we can confirm part availability. Walk-ins are welcome near Liverpool Street Station, but some repairs may require a 1 working day pre-order.
What warranty is included?
Battery replacements include a 6-month warranty.