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Motorola G40 Fusion Battery Replacement

Battery Replacement guide for the Motorola G40 Fusion

Moderate
~40 min
21 steps

Before you begin

Tools

  • Precision screwdriver set (Phillips #00)
  • Plastic prying tools
  • Suction cup tool
  • Heat gun or hair dryer
  • Tweezers
  • Spudger tool
  • Anti-static wrist strap

Parts / materials

  • Motorola G40 Fusion replacement battery
  • Battery adhesive removal strips
  • Isopropyl alcohol
  • Back cover adhesive tape

Safety

  • Power off the phone completely before beginning disassembly.
  • Do not puncture, bend, or heat the Li-ion battery directly.
  • Disconnect the battery press connector before removing other internal cables.
  • Wear safety glasses to protect against heat-softened glass or plastic debris.

Overview

# Motorola G40 Fusion Battery Replacement Repair Guide Action-specific battery replacement walkthrough for the Motorola G40 Fusion. About 40 minutes across 21 steps. This DIY guide walks through battery replacement on the Motorola G40 Fusion (Moto G series phone). Before you open the device, confirm the exact model number on the Motorola settings screen or rear housing so your replacement part matches the G40 Fusion specifically—not a similar Moto G sibling. Most DIY techs finish this Motorola G40 Fusion battery replacement in about 40 minutes when parts and tools are ready. Difficulty is rated intermediate for this model. Recommended tools for this Motorola G40 Fusion job: Precision screwdriver set (Phillips #00), Plastic prying tools, Suction cup tool, Heat gun or hair dryer, Tweezers, Spudger tool, Anti-static wrist strap. Parts and supplies: Motorola G40 Fusion replacement battery, Battery adhesive removal strips, Isopropyl alcohol, Back cover adhesive tape. Power the G40 Fusion 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 Motorola G40 Fusion, 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

    Turn Off Phone

    1 min

    Press and hold the Power button, then tap Power Off on the screen.

  2. 2

    Eject SIM Tray

    1 min

    Insert a SIM eject tool into the hole beside the SIM tray to pop it out.

  3. 3

    Heat Back Cover

    2 min

    Apply heat around the rear edges of the phone using a heat gun for two minutes to soften the adhesive.

  4. 4

    Attach Suction Cup

    1 min

    Press a suction cup near the bottom edge of the rear panel and gently pull up to create a gap.

  5. 5

    Slice Rear Adhesive

    3 min

    Insert a plastic opening pick into the gap and slide it along the perimeter to release the plastic clips and tape.

  6. 6

    Disconnect Fingerprint Sensor

    2 min

    Slightly lift the rear panel and use a spudger to press off the fingerprint sensor flex connector.

  7. 7

    Remove Motherboard Screws

    3 min

    Unscrew the Phillips #00 screws securing the plastic upper motherboard shield.

  8. 8

    Remove Motherboard Shield

    1 min

    Use a spudger to pry up and remove the plastic motherboard shield.

  9. 9

    Disconnect Battery Cable

    1 min

    Disconnect the battery flex cable from its motherboard socket using a plastic spudger.

  10. 10

    Disconnect Display Interconnect

    2 min

    Unplug the main interconnect flex cable that runs over the top of the battery.

  11. 11

    Apply Isopropyl Alcohol

    2 min

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

  12. 12

    Pry Out Battery

    4 min

    Insert a flat plastic prying tool under the battery and carefully lift it until the adhesive separates.

  13. 13

    Clean Battery Recess

    2 min

    Wipe away residual adhesive from the frame compartment using isopropyl alcohol and a lint-free cloth.

  14. 14

    Apply New Adhesive

    2 min

    Place new battery adhesive strips onto the housing recess and peel away the protective film.

  15. 15

    Install New Battery

    2 min

    Set the replacement battery into the frame and press firmly to set the adhesive.

  16. 16

    Reconnect Interconnect Cable

    1 min

    Align and press the main FPC interconnect flex cable back onto its motherboard socket.

  17. 17

    Reconnect Battery Cable

    1 min

    Attach the battery press connector straight down into its motherboard socket.

  18. 18

    Secure Motherboard Shield

    3 min

    Position the upper motherboard shield and reinstall all the Phillips #00 screws firmly.

  19. 19

    Attach Fingerprint Sensor

    2 min

    Hold the rear panel close to the frame and press the fingerprint reader flex cable onto the board.

  20. 20

    Seal Back Cover

    3 min

    Apply new rear adhesive, align the back cover, and press firmly along the edges to seal the phone.

  21. 21

    Reinsert SIM Tray

    1 min

    Push the SIM card tray back into the slot on the side of the phone until flush.

After your Motorola G40 Fusion battery replacement

Power the G40 Fusion 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 Motorola G40 Fusion job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.

Keep learning

Explore more Motorola G40 Fusion repair context in the encyclopedia, or open related DIY guides.

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