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Tablet · Samsung · Galaxy Tab S8

Samsung Galaxy Tab S8 Battery Replacement

Battery Replacement guide for the Samsung Galaxy Tab S8

Moderate
~60 min
22 steps

Before you begin

Tools

  • Heat gun or hair dryer
  • Suction cups
  • Guitar picks for prying
  • Precision screwdriver set
  • Plastic prying tools
  • Tweezers
  • Clean workspace mat

Parts / materials

  • Isopropyl alcohol (90%+)
  • Battery adhesive removal strips
  • Pre-cut display frame adhesive tape

Safety

  • Wear safety glasses to protect eyes from potential glass splinters.
  • Do not puncture, bend, or heat the lithium-ion battery.
  • Work in a well-ventilated area when using isopropyl alcohol.

Overview

# Samsung Galaxy Tab S8 Battery Replacement Repair Guide Action-specific battery replacement walkthrough for the Samsung Galaxy Tab S8. About 60 minutes across 22 steps. This DIY guide walks through battery replacement on the Samsung Galaxy Tab S8 (Galaxy Tab S series tablet). 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 Tab S8 specifically—not a similar Galaxy Tab S sibling. Most DIY techs finish this Samsung Galaxy Tab S8 battery replacement in about 60 minutes when parts and tools are ready. Difficulty is rated intermediate for this model. Recommended tools for this Samsung Galaxy Tab S8 job: Heat gun or hair dryer, Suction cups, Guitar picks for prying, Precision screwdriver set, Plastic prying tools, Tweezers, Clean workspace mat. Parts and supplies: Isopropyl alcohol (90%+), Battery adhesive removal strips, Pre-cut display frame adhesive tape. Power the Galaxy Tab S8 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 Tab S8, 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

    Power off the tablet

    1 min

    Press and hold the Power and Volume Down buttons, then tap Power Off on the screen. Ensure the device is fully shut down before proceeding.

  2. 2

    Heat the outer display edges

    3 min

    Use a heat gun on low setting to warm the outer perimeter of the glass display for two minutes. This softens the strong adhesive holding the screen to the frame.

  3. 3

    Attach a suction handle near the glass edge

    2 min

    Place a suction cup on the lower glass assembly near the USB-C port. Press down firmly to create a secure vacuum seal.

  4. 4

    Slice the bottom display adhesive

    4 min

    Pull up on the suction handle to create a small gap, then insert a guitar pick under the glass. Slide the pick along the bottom edge to slice through the adhesive.

  5. 5

    Slice around the remaining display perimeter

    6 min

    Insert additional opening picks as you slide along the left, top, and right edges of the screen. Keep picks shallow to avoid damaging delicate ribbon cables.

  6. 6

    Pivot open the display

    2 min

    Gently lift the top edge of the display and pivot it up from the chassis like a book cover. Do not pull the screen completely away, as flex cables remain connected.

  7. 7

    Unscrew the display cable shield

    3 min

    Use a Phillips #00 screwdriver to remove the screws securing the metal bracket over the display flex cable connector.

  8. 8

    Remove the display cable shield

    1 min

    Use tweezers to lift and remove the metal retaining bracket covering the display connector.

  9. 9

    Disconnect the display flex cable

    2 min

    Use the flat edge of a plastic spudger to gently pry the display connector straight up from its motherboard socket. Set the screen aside.

  10. 10

    Disconnect the battery cable

    2 min

    Locate the battery flex connector on the motherboard. Pry it directly upward with a plastic spudger to cut power to the board.

  11. 11

    Remove the interconnect flex cable

    3 min

    Disconnect and unroute the ribbon cable spanning across the top of the battery pack using a plastic spudger.

  12. 12

    Apply isopropyl alcohol under the battery

    3 min

    Apply a few drops of high-concentration isopropyl alcohol along the battery edges. Allow one minute for the liquid to dissolve the factory glue.

  13. 13

    Pry up the old battery

    5 min

    Slide a plastic opening card under the side of the battery cell. Slowly lever up to break the remaining adhesive bonds underneath.

  14. 14

    Lift out the old battery

    2 min

    Lift the battery out of the chassis once fully unsealed. Avoid using sharp metal tools or bending the battery cell.

  15. 15

    Clean the battery cavity

    3 min

    Wipe down the recessed metal battery cavity with an alcohol-dampened cloth to remove residual glue. Ensure the surface is dry before continuing.

  16. 16

    Apply replacement battery adhesive

    2 min

    Peel the backing off new adhesive strips and press them flat into the floor of the battery compartment.

  17. 17

    Install the new battery

    2 min

    Lower the replacement battery into the frame recess, aligning its connector near the motherboard socket. Press down firmly to seat it onto the adhesive.

  18. 18

    Reconnect the interconnect flex cable

    2 min

    Realign the main interconnect ribbon cable over the battery and press its press connectors into place until they snap onto the boards.

  19. 19

    Reconnect the battery flex cable

    1 min

    Align the battery connector over its motherboard socket and press straight down until it clicks.

  20. 20

    Secure the display flex cable and shield

    4 min

    Press the display flex cable into its motherboard socket, place the metal shield on top, and tighten its screws.

  21. 21

    Apply new display perimeter adhesive

    4 min

    Lay pre-cut adhesive strips along the frame perimeter. Remove the protective film backing before reattaching the display.

  22. 22

    Press the display onto the chassis

    3 min

    Align the screen assembly precisely over the frame and press firmly around all edges to seat the adhesive securely.

After your Samsung Galaxy Tab S8 battery replacement

Power the Galaxy Tab S8 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 Tab S8 job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.

Prefer a professional repair?

Book Samsung Galaxy Tab S8 battery replacement at LML Repair in Seattle — same-day options available.

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