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Samsung Galaxy Note 8 Battery Replacement

Battery Replacement guide for the Samsung Galaxy Note 8

Moderate
~34 min
22 steps

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

# Samsung Galaxy Note 8 Battery Replacement Repair Guide Action-specific battery replacement walkthrough for the Samsung Galaxy Note 8. About 34 minutes across 22 steps. This DIY guide walks through battery replacement on the Samsung Galaxy Note 8 (Galaxy Note series phone). Before you open the device, confirm the exact model number on the Samsung settings screen or rear housing so your replacement part matches the Galaxy Note 8 specifically—not a similar Galaxy Note sibling. Most DIY techs finish this Samsung Galaxy Note 8 battery replacement in about 34 minutes when parts and tools are ready. Difficulty is rated intermediate for this model. Recommended tools for this Samsung Galaxy Note 8 job: Heat gun or hair dryer, Suction cup tool, Plastic prying tools, Precision screwdriver set (Phillips #00), Spudger tool, Tweezers. Parts and supplies: Replacement Galaxy Note 8 battery, Battery adhesive removal strips, Pre-cut rear glass replacement adhesive, Isopropyl alcohol. Power the Galaxy Note 8 off completely, remove SIMs/SD cards if present, and work on a clean, well-lit surface with a magnetic mat for screws. If a step feels wrong for your Samsung Galaxy Note 8, stop and compare the connector layout to the photos in this guide. When you prefer a same-day pro repair in Seattle instead, LML Repair can handle battery replacement for this model with tested parts and a workmanship warranty.

Step-by-step

  1. 1

    Remove the S Pen and SIM tray

    1 min

    Press the S Pen to pop it out, then insert a ejection tool into the top frame pinhole to remove the SIM tray.

  2. 2

    Heat the back glass edge

    2 min

    Apply heat around all four outer edges of the rear glass with a heat gun or hair dryer for 2 minutes to soften adhesive.

  3. 3

    Attach the suction cup

    1 min

    Place a suction cup near the bottom edge of the rear glass cover and pull upward to create a thin gap.

  4. 4

    Insert an opening pick

    1 min

    Push a plastic opening pick directly into the gap created between the rear glass and the metal frame.

  5. 5

    Slice the bottom adhesive

    2 min

    Slide the pick across the bottom edge of the device to cut through the strong perimeter glue.

  6. 6

    Slice the side adhesive

    3 min

    Work the opening pick along the left and right sides of the phone to separate the side adhesive channels.

  7. 7

    Slice the top adhesive carefully

    2 min

    Slide along the top edge cautiously to avoid inserting the pick too deep near the fingerprint reader ribbon cable.

  8. 8

    Slightly lift the back cover

    1 min

    Hinge the back cover slightly open from the right side like a book cover.

  9. 9

    Disconnect the fingerprint sensor

    1 min

    Use a plastic spudger to detach the fingerprint reader connector from the motherboard flex socket.

  10. 10

    Remove the back cover

    1 min

    Lift the rear glass panel completely off the device and place it on a clean workspace.

  11. 11

    Unscrew the upper midframe bracket

    3 min

    Unscrew the 10 Phillips #00 screws holding the top antenna assembly and wireless charging pad in place.

  12. 12

    Remove the wireless charging coil

    1 min

    Pry up the edges of the wireless charging assembly using a spudger and lift it out of the phone chassis.

  13. 13

    Disconnect the battery flex cable

    1 min

    Pry the battery cable connector straight up off the motherboard using the flat end of a spudger.

  14. 14

    Unscrew the lower speaker module

    2 min

    Remove the 5 Phillips #00 screws holding the loudspeaker assembly at the bottom of the phone.

  15. 15

    Remove the loudspeaker assembly

    1 min

    Insert a spudger under the loudspeaker edge and gently pop it out of the lower chassis frame.

  16. 16

    Apply isopropyl alcohol to battery well

    2 min

    Apply a few drops of high-concentration isopropyl alcohol along the top and bottom edges of the battery.

  17. 17

    Pry out the old battery

    3 min

    Insert a broad plastic tool under the battery's left side and carefully pry upward until the glue bond breaks.

  18. 18

    Remove the old battery

    1 min

    Lift the swollen or degraded battery straight out of the frame housing.

  19. 19

    Clean residual adhesive

    2 min

    Wipe away remaining adhesive strips from the metal battery well using isopropyl alcohol and a lint-free wipe.

  20. 20

    Apply new battery adhesive

    1 min

    Peel and position fresh battery adhesive strips inside the battery well recess.

  21. 21

    Install the replacement battery

    1 min

    Set the new battery down into the housing and press firmly for 10 seconds to set the adhesive.

  22. 22

    Reconnect the battery cable

    1 min

    Align 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.

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