Phone · Samsung · Galaxy S25 Ultra
Samsung Galaxy S25 Ultra Battery Replacement
Battery Replacement guide for the Samsung Galaxy S25 Ultra
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Precision screwdriver set (Phillips #00)
- Spudger tool
- Tweezers
- SIM eject tool
Parts / materials
- Replacement Galaxy S25 Ultra battery
- Battery adhesive removal strips
- Pre-cut rear glass adhesive gasket
- 90%+ Isopropyl alcohol
Safety
- Disconnect the battery before touching motherboard connectors to prevent electrical shorting.
- Do not puncture, flex, or heat the lithium-ion battery directly.
- Wear safety glasses to protect your eyes when handling hot glass and solvents.
- Keep isopropyl alcohol away from hot tools and open flames.
Overview
Step-by-step
- 1
Eject SIM Tray and S Pen
1 minInsert a SIM eject tool into the hole on the bottom edge to remove the SIM tray, then push and release to withdraw the S Pen.
- 2
Heat the Rear Glass
3 minApply a heat gun set to low along the rear glass edges for 3 minutes to soften the perimeter adhesive.
- 3
Attach Suction Cup
2 minPlace a suction cup near the bottom edge of the back cover and pull upward gently to form a small gap.
- 4
Insert Opening Pick
1 minSlide a thin plastic opening pick into the gap created between the rear glass and the metal frame.
- 5
Slice Bottom Adhesive
2 minSlide the pick carefully along the bottom edge to cut through the factory adhesive layer.
- 6
Slice Left Edge Adhesive
2 minGuide the pick around the bottom-left corner and slide along the left side of the device.
- 7
Slice Top Edge Adhesive
2 minMove the pick along the top edge, keeping insertion depth under 3 mm to protect internal sensors.
- 8
Slice Right Edge Adhesive
2 minSlide the pick down the right edge of the frame to finish separating the back panel.
- 9
Remove the Rear Glass
2 minLift the rear glass cover free from the chassis and place it on a clean surface.
- 10
Unscrew Upper Motherboard Bracket
3 minUse a Phillips #00 screwdriver to remove the screws holding down the upper wireless charging assembly.
- 11
Disconnect Wireless Charging Coil
1 minUse a spudger to gently pop off the wireless charging coil press connector from the motherboard.
- 12
Remove Wireless Charging Assembly
2 minPeel up the wireless charging pad and attached graphite shield sheet from the battery area.
- 13
Disconnect the Battery Cable
1 minPry the battery connector directly up from its motherboard socket using a plastic spudger.
- 14
Unscrew Lower Loudspeaker
2 minRemove the Phillips #00 screws securing the bottom speaker assembly to the housing.
- 15
Remove Loudspeaker Module
2 minPry up and lift out the loudspeaker module to reveal the main ribbon cables underneath.
- 16
Disconnect Interconnect Flex Cables
2 minUnplug the main display and sub-board interconnect ribbon cables from both ends.
- 17
Apply Isopropyl Alcohol
3 minDrip a small amount of high-concentration isopropyl alcohol into the gaps around the battery perimeter.
- 18
Pull Battery Tab
3 minGrasp the battery pouch release tab firmly and pull steady straight upward to peel the battery free.
- 19
Remove Old Battery
1 minLift the degraded battery out of the frame cavity and store it safely for recycling.
- 20
Clean Battery Well
2 minRemove residual adhesive glue from the well using isopropyl alcohol and a clean lint-free wipe.
- 21
Apply Battery Adhesive
2 minPlace new pre-cut battery adhesive strips into the cleaned recess in the aluminum housing.
- 22
Install New Battery
2 minAlign the replacement battery over the adhesive strips and press down firmly to secure it.
- 23
Reinstall Interconnect Cables and Loudspeaker
3 minReconnect the flex cables, position the bottom loudspeaker module back into place, and resecure its screws.
- 24
Reconnect Battery and Wireless Coil
3 minAttach the main battery press connector, reinstall the wireless charging coil assembly, and fasten its screws.
- 25
Reseal and Close Rear Glass
4 minApply a fresh adhesive gasket around the frame edge, firmly press the back glass down, and reinsert the SIM tray and S Pen.
After your Samsung Galaxy S25 Ultra battery replacement
Power the Galaxy S25 Ultra back on and test the battery replacement function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Samsung Galaxy S25 Ultra job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Samsung Galaxy S25 Ultra repair context in the encyclopedia, or open related DIY guides.

