Phone · Samsung · Galaxy Note 8
Samsung Galaxy Note 8 Battery Replacement
Battery Replacement guide for the Samsung Galaxy Note 8
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Precision screwdriver set (Phillips #00)
- Spudger tool
- Tweezers
Parts / materials
- Replacement Galaxy Note 8 battery
- Battery adhesive removal strips
- Pre-cut rear glass replacement adhesive
- Isopropyl alcohol
Safety
- Discharge your device battery below 25% before starting to prevent thermal runaway if accidentally punctured.
- Always wear eye protection to guard against unexpected glass shards when removing cracked back panels.
- Never pry directly against the motherboard or puncture the lithium-ion battery with sharp metal tools.
Overview
Step-by-step
- 1
Remove the S Pen and SIM tray
1 minPress the S Pen to pop it out, then insert a ejection tool into the top frame pinhole to remove the SIM tray.
- 2
Heat the back glass edge
2 minApply heat around all four outer edges of the rear glass with a heat gun or hair dryer for 2 minutes to soften adhesive.
- 3
Attach the suction cup
1 minPlace a suction cup near the bottom edge of the rear glass cover and pull upward to create a thin gap.
- 4
Insert an opening pick
1 minPush a plastic opening pick directly into the gap created between the rear glass and the metal frame.
- 5
Slice the bottom adhesive
2 minSlide the pick across the bottom edge of the device to cut through the strong perimeter glue.
- 6
Slice the side adhesive
3 minWork the opening pick along the left and right sides of the phone to separate the side adhesive channels.
- 7
Slice the top adhesive carefully
2 minSlide along the top edge cautiously to avoid inserting the pick too deep near the fingerprint reader ribbon cable.
- 8
Slightly lift the back cover
1 minHinge the back cover slightly open from the right side like a book cover.
- 9
Disconnect the fingerprint sensor
1 minUse a plastic spudger to detach the fingerprint reader connector from the motherboard flex socket.
- 10
Remove the back cover
1 minLift the rear glass panel completely off the device and place it on a clean workspace.
- 11
Unscrew the upper midframe bracket
3 minUnscrew the 10 Phillips #00 screws holding the top antenna assembly and wireless charging pad in place.
- 12
Remove the wireless charging coil
1 minPry up the edges of the wireless charging assembly using a spudger and lift it out of the phone chassis.
- 13
Disconnect the battery flex cable
1 minPry the battery cable connector straight up off the motherboard using the flat end of a spudger.
- 14
Unscrew the lower speaker module
2 minRemove the 5 Phillips #00 screws holding the loudspeaker assembly at the bottom of the phone.
- 15
Remove the loudspeaker assembly
1 minInsert a spudger under the loudspeaker edge and gently pop it out of the lower chassis frame.
- 16
Apply isopropyl alcohol to battery well
2 minApply a few drops of high-concentration isopropyl alcohol along the top and bottom edges of the battery.
- 17
Pry out the old battery
3 minInsert a broad plastic tool under the battery's left side and carefully pry upward until the glue bond breaks.
- 18
Remove the old battery
1 minLift the swollen or degraded battery straight out of the frame housing.
- 19
Clean residual adhesive
2 minWipe away remaining adhesive strips from the metal battery well using isopropyl alcohol and a lint-free wipe.
- 20
Apply new battery adhesive
1 minPeel and position fresh battery adhesive strips inside the battery well recess.
- 21
Install the replacement battery
1 minSet the new battery down into the housing and press firmly for 10 seconds to set the adhesive.
- 22
Reconnect the battery cable
1 minAlign the battery flex connector over its socket and press down until it snaps into place.
After your Samsung Galaxy Note 8 battery replacement
Power the Galaxy Note 8 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 Note 8 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 Note 8 repair context in the encyclopedia, or open related DIY guides.

