Phone · Motorola · Moto G31
Motorola Moto G31 Battery Replacement
Battery Replacement guide for the Motorola Moto G31
Before you begin
Tools
- Precision Phillips #00 screwdriver
- Plastic opening tools
- Spudger
- Heat gun or hair dryer
- SIM eject tool
- Tweezers
- Anti-static wrist strap
Parts / materials
- Replacement Moto G31 battery
- Battery adhesive strips
- Isopropyl alcohol (90%+)
- Back cover adhesive tape
Safety
- Discharge the battery below 25% before starting to reduce the risk of fire or thermal runaway.
- Wear eye protection when applying heat or prying components.
- Do not puncture or bend the lithium-ion battery with metal tools.
- Work in a well-ventilated area when using isopropyl alcohol.
Overview
Step-by-step
- 1
Power off the device
1 minPress and hold the power button, then select Power Off on the screen. Ensure the phone is completely shut down before proceeding.
- 2
Remove SIM card tray
1 minInsert a SIM eject tool into the hole next to the SIM tray on the left edge. Push firmly to pop out the tray and pull it completely out.
- 3
Heat the back cover
2 minUse a heat gun or hair dryer on a low setting to heat the edges of the rear panel for two minutes. This softens the plastic clips and perimeter adhesive.
- 4
Slice back cover adhesive
4 minInsert a thin plastic opening pick into the seam between the back panel and frame near the bottom. Slide the pick around the perimeter to release the plastic clips.
- 5
Detach the back cover
2 minGently lift the rear panel off the chassis. Take care around the side power key to avoid snagging internal components.
- 6
Unscrew motherboard cover
4 minUse a Phillips #00 screwdriver to remove the screws securing the plastic motherboard bracket. Keep track of each screw for reassembly.
- 7
Remove motherboard cover
2 minInsert a spudger under the motherboard shield and gently pry up to release its retaining tabs. Lift the cover off the phone.
- 8
Disconnect the battery flex
1 minUse a plastic spudger to pop the battery connector straight up off its socket on the motherboard. Always disconnect power before touching other internals.
- 9
Disconnect display flex cable
1 minPry up the display and main interconnect flex cables overlaying the battery compartment. Fold the loose cables back out of your way.
- 10
Soak battery adhesive
2 minApply a few drops of isopropyl alcohol or adhesive remover around the edges of the battery. Allow it to sit for two minutes to weaken the adhesive.
- 11
Pry out old battery
4 minSlide a flat plastic card or wide spudger underneath the battery from the bottom. Gently pry upward to break the adhesive bond and lift the battery out.
- 12
Clean battery well
2 minWipe away remaining adhesive residue inside the battery housing using a lint-free cloth dampened with isopropyl alcohol. Ensure the surface is completely dry.
- 13
Apply replacement adhesive
2 minPeel the backing off new double-sided battery adhesive strips and press them firmly onto the battery compartment floor. Remove the top protective film.
- 14
Position new battery
2 minAlign the new battery with the housing and press it firmly into place. Ensure the battery flex cable easily reaches its motherboard socket without tension.
- 15
Reconnect interior cables
2 minAlign and press down on the main interconnect and display flex cable connectors until they click into place. Reconnect the battery flex cable to its socket.
- 16
Reattach motherboard cover
3 minPlace the plastic motherboard cover over the top assembly and press down until it snaps into position. Reinstall all Phillips screws tightly.
- 17
Secure the back cover
2 minAlign the rear panel with the phone frame and press firmly along the edges to snap the internal clips shut.
- 18
Reinsert SIM tray
1 minSlide the SIM card tray back into its slot on the side of the phone until it sits flush. Turn on the device to test functionality.
After your Motorola Moto G31 battery replacement
Power the Moto G31 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 Moto G31 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 Moto G31 repair context in the encyclopedia, or open related DIY guides.

