Phone · Motorola · G40 Fusion
Motorola G40 Fusion Battery Replacement
Battery Replacement guide for the Motorola G40 Fusion
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
Step-by-step
- 1
Turn Off Phone
1 minPress and hold the Power button, then tap Power Off on the screen.
- 2
Eject SIM Tray
1 minInsert a SIM eject tool into the hole beside the SIM tray to pop it out.
- 3
Heat Back Cover
2 minApply heat around the rear edges of the phone using a heat gun for two minutes to soften the adhesive.
- 4
Attach Suction Cup
1 minPress a suction cup near the bottom edge of the rear panel and gently pull up to create a gap.
- 5
Slice Rear Adhesive
3 minInsert a plastic opening pick into the gap and slide it along the perimeter to release the plastic clips and tape.
- 6
Disconnect Fingerprint Sensor
2 minSlightly lift the rear panel and use a spudger to press off the fingerprint sensor flex connector.
- 7
Remove Motherboard Screws
3 minUnscrew the Phillips #00 screws securing the plastic upper motherboard shield.
- 8
Remove Motherboard Shield
1 minUse a spudger to pry up and remove the plastic motherboard shield.
- 9
Disconnect Battery Cable
1 minDisconnect the battery flex cable from its motherboard socket using a plastic spudger.
- 10
Disconnect Display Interconnect
2 minUnplug the main interconnect flex cable that runs over the top of the battery.
- 11
Apply Isopropyl Alcohol
2 minApply a few drops of high-concentration isopropyl alcohol along the left and right edges of the battery.
- 12
Pry Out Battery
4 minInsert a flat plastic prying tool under the battery and carefully lift it until the adhesive separates.
- 13
Clean Battery Recess
2 minWipe away residual adhesive from the frame compartment using isopropyl alcohol and a lint-free cloth.
- 14
Apply New Adhesive
2 minPlace new battery adhesive strips onto the housing recess and peel away the protective film.
- 15
Install New Battery
2 minSet the replacement battery into the frame and press firmly to set the adhesive.
- 16
Reconnect Interconnect Cable
1 minAlign and press the main FPC interconnect flex cable back onto its motherboard socket.
- 17
Reconnect Battery Cable
1 minAttach the battery press connector straight down into its motherboard socket.
- 18
Secure Motherboard Shield
3 minPosition the upper motherboard shield and reinstall all the Phillips #00 screws firmly.
- 19
Attach Fingerprint Sensor
2 minHold the rear panel close to the frame and press the fingerprint reader flex cable onto the board.
- 20
Seal Back Cover
3 minApply new rear adhesive, align the back cover, and press firmly along the edges to seal the phone.
- 21
Reinsert SIM Tray
1 minPush 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.

