If your Samsung Galaxy S25 Edge suffers from rapid power drain, unexpected shutdowns, or a swollen back panel, it is time to install a new 3900 mAh battery. This repair requires removing the fragile glass back cover and navigating delicate internal flex cables. Because this model is incredibly thin at just 5.8 mm, you must proceed with extra patience to avoid damaging the display or internal components. Expect to work with strong adhesives and small Phillips screws during the disassembly process.
Required Tools
- 1
Power Off and Prepare
- Turn off your Samsung Galaxy S25 Edge completely before starting the repair.
- Eject the SIM card tray to prevent it from catching on the motherboard during disassembly.
- 2
Heat the Back Glass
- Apply even heat to the edges of the back cover using a heat gun or heating mat.
- Keep the temperature around 80 degrees Celsius for a few minutes to soften the water-resistant adhesive.
- 3
Slice the Adhesive
- Place a suction cup near the bottom edge of the phone and pull up gently to create a tiny gap.
- Insert a plastic opening pick into the gap and carefully slide it around the perimeter to cut the adhesive.
- 4
Remove the Back Cover
- Once all the adhesive is cut, gently lift the back glass away from the titanium frame.
- Set the panel aside in a safe location to avoid scratching or shattering the glass.
- 5
Unscrew the Internal Shielding
- Locate and remove the Phillips #00 screws securing the wireless charging coil and upper bracket.
- Keep your screws organized on a magnetic mat so you know exactly where they belong during reassembly.
- 6
Disconnect the Wireless Charger
- Use a nylon spudger to unclip the plastic bracket holding the wireless charging pad.
- Carefully peel the coil assembly back to expose the motherboard connections.
- 7
Disconnect the Battery
- Immediately pry up the battery connector from the motherboard using your plastic spudger.
- This crucial step removes power from the board and prevents accidental short circuits while you work.
- 8
Extract the Old Battery
- Locate the battery adhesive pull tabs and pull them straight up to release the 3900 mAh cell.
- If the tabs break, apply a few drops of isopropyl alcohol under the battery to dissolve the adhesive before gently prying it out.
- 9
Install the New Battery
- Clean any leftover adhesive from the frame using isopropyl alcohol and apply new battery adhesive strips.
- Press the new replacement battery firmly into the housing to secure it in place.
- 10
Reassemble the Phone
- Reconnect the battery flex cable and reinstall the wireless charging coil assembly.
- Secure the internal shielding with the Phillips screws, apply new precut adhesive to the frame, and press the back glass firmly into place to seal the device.
Disclaimer: repairs are done at your own risk. Devices contain batteries and live components; improper handling can cause injury or fire. For a safe, warrantied repair, contact us.
FAQ
Will replacing the battery fix my phone if it randomly shuts down?
Yes, unexpected shutdowns are a classic symptom of a degraded lithium-ion battery. Installing a fresh cell usually resolves this issue completely.
Do I lose water resistance after opening the Galaxy S25 Edge?
Opening the device breaks the factory IP68 waterproof seal. You must apply new precut adhesive during reassembly to restore basic water resistance, but you should still avoid submerging the phone.
What should I do if the battery is swollen?
If the battery is swollen, do not heat the device. Work in a well-ventilated area, wear safety goggles, and use isopropyl alcohol to dissolve the adhesive instead of prying forcefully.
Can I use metal tools to pry out the battery?
No, you must never use metal tools to pry out a battery. Puncturing a lithium-ion cell with a metal tool can cause a dangerous thermal runaway and fire.
Professional Device Repair vs. DIY Guides
While our step-by-step guides are perfect for troubleshooting minor issues at home, complex hardware faults require expert intervention. If you are facing critical issues, choosing a professional phone repair Slovenia or laptop repair Slovenia service ensures your device is handled safely without risking further damage.
Why Choose KRON Servis for Your Tech Repairs?
At KRON Servis, we repair over 3,284 devices every month with an outstanding customer rating of 4.9/5. Whether you need a reliable phone repair Ljubljana or comprehensive servicing for consoles, TVs, and smart mobility, our certified technicians are here to help. We operate in two convenient locations: Zagrebška cesta 83a in Maribor and Vilharjeva cesta 29 in Ljubljana, open Monday to Friday from 8:00 to 16:00.
We use high-quality OEM parts and offer a 12-month warranty on all repairs. Professional diagnostics are available for 25 € (VAT included). Avoid the risks of DIY mistakes and let our experts restore your device. For more details on our rates, visit our pricing page, check our services, or contact us directly at questions@kron.si or via our contact form. You can also track your device anytime on our repair status page.