- After payment, we order this part specifically for your repair.
- It usually arrives within 1 working day.
- We contact you the same day it arrives to book your fitting.
A worn Samsung Galaxy Note 20 battery can cause rapid drain, unexpected shutdowns, heat or unreliable charging. We fit an OEM-compatible replacement battery and test charging and power stability while keeping your existing data and settings untouched.
Battery option
This repair uses an OEM-compatible replacement battery selected for the correct fit and charging behaviour. The battery is checked before fitting and tested again inside the phone.
Signs your Samsung Galaxy Note 20 battery needs replacing
- The charge falls much faster than it used to
- The phone shuts down while charge is still showing
- The battery percentage jumps or stalls
- The phone becomes unusually warm during normal use
- The screen or rear panel is lifting because the cell may be swollen
What is included
- Safe removal and responsible disposal of the worn battery
- Fitting of the replacement cell
- Charging, power and temperature checks
- General function testing before handover
- 6-month warranty on the fitted battery and workmanship
How to confirm your model
Check the model name and model number in Settings, or bring the phone to us and we will confirm the exact Samsung Galaxy Note 20 before ordering the battery.
Repair process and turnaround
- Book a walk-in appointment or arrange a UK mail-in repair.
- The battery is ordered after payment and normally arrives in 1 working day.
- Once it has arrived, the guaranteed 2-hour walk-in fitting can be selected where available.
- We fit, test and contact you when the phone is ready.
Why choose Square Repair
- Independent repair workshop near Liverpool Street Station
- Operating since 2015
- Walk-in and tracked UK mail-in routes
- Clear testing before and after the repair
- No data wipe is required for a battery replacement
Before you book
- If the screen or back is lifting, stop charging the phone and arrange the repair promptly because the battery may be swollen.
- Liquid damage or a charging-port fault can produce similar symptoms, so we check the cause before fitting a battery.
- If the phone is completely unresponsive, a diagnosis may be needed first.
Related repairs
- All Samsung Galaxy Note 20 repairs
- Mobile phone diagnosis
- Water damage diagnosis
- Samsung repair services
Book your repair
Book a walk-in repair near Liverpool Street Station, or follow our UK mail-in process. We confirm the part and turnaround before work begins.
Frequently Asked Questions
How do I know if my Samsung Galaxy Note 20 battery needs replacing?
Common signs include fast battery drain, sudden shutdowns, inconsistent percentage readings, overheating or the phone only working reliably while connected to power.
Will I lose my data during battery replacement?
No. Battery replacement is a hardware repair and does not normally affect your data. We still recommend backing up important data before any repair.
How long does the battery repair take?
The battery is normally sourced to order with a 1 working day pre-order lead time. Once the part is available, fitting and testing are usually completed the same day.
Do you test the phone after fitting the battery?
Yes. We test charging, power stability and core functions before returning the device.
What warranty is included?
Samsung battery replacements include a 6-month warranty covering the fitted battery and our workmanship.