Phone · Samsung · Galaxy Z Fold 4 5G
Samsung Galaxy Z Fold 4 5G Battery Replacement
Battery Replacement guide for the Samsung Galaxy Z Fold 4 5G
Before you begin
Tools
- Phillips #00 screwdriver
- Heat gun or iOpener
- Suction handle
- Opening picks
- Spudger
- Tweezers
- Plastic opening cards
Parts / materials
- Replacement dual battery set for Galaxy Z Fold 4
- Pre-cut battery adhesive strips
- Back glass replacement adhesive seals
- High-concentration isopropyl alcohol (99%)
Safety
- Discharge both batteries below 25% before starting the repair to prevent thermal runaway if damaged.
- Never use sharp metal tools or puncture the lithium-ion batteries.
- Wear eye protection when heating glass panels and prying near adhesives.
Overview
Step-by-step
- 1
Power off the device
1 minPress and hold the side button along with the volume down button, then tap Power Off on the screen.
- 2
Heat the primary rear cover
2 minApply a heated iOpener or heat gun to the edges of the right-side back glass panel for two minutes to soften the adhesive.
- 3
Slice the primary rear cover adhesive
4 minAttach a suction cup near the bottom edge, pull up firmly to create a gap, and insert an opening pick into the seam.
- 4
Remove the primary back glass
3 minSlide the pick carefully around all edges to slice through the adhesive, then lift off the back glass panel.
- 5
Unscrew the wireless charging coil
3 minUse a Phillips #00 screwdriver to remove the 10 screws securing the wireless charging coil and mid-frame bracket.
- 6
Disconnect the wireless charging coil
1 minUse the pointed end of a spudger to pop off the wireless charging coil press connector from the motherboard.
- 7
Remove the wireless charging coil assembly
2 minPeel up the graphite sheet and carefully lift the wireless charging coil assembly out of the chassis.
- 8
Disconnect the primary battery
1 minPry the primary battery press connector straight up from its socket to prevent electrical short circuits during repair.
- 9
Heat the secondary back glass panel
2 minApply a heated iOpener or heat gun to the left-side cover glass panel for two minutes.
- 10
Slice the secondary rear panel adhesive
4 minPlace a suction cup on the glass, pull to create a gap, and slide an opening pick under the edge.
- 11
Remove the secondary back glass
2 minCut through all remaining perimeter adhesive with the pick and lift the secondary back panel off the frame.
- 12
Unscrew the lower loudspeaker housing
2 minRemove the Phillips #00 screws securing the bottom speaker shield on the secondary battery side.
- 13
Disconnect the secondary battery
1 minUse a plastic spudger to disconnect the secondary battery flex cable from the main motherboard.
- 14
Apply isopropyl alcohol to the primary battery
3 minApply high-concentration isopropyl alcohol along the edges of the primary battery to soften the strong adhesive beneath it.
- 15
Pry out the primary battery
5 minInsert a flat plastic card or heavy-duty opening pick under the primary battery and gently lift it out of its well.
- 16
Apply isopropyl alcohol to the secondary battery
3 minDrip a small amount of isopropyl alcohol along the sides of the secondary battery and wait 2 minutes.
- 17
Pry out the secondary battery
4 minWork a plastic opening tool under the secondary battery and slowly lever it up until it detaches from the frame.
- 18
Install replacement batteries with fresh adhesive
4 minClean remaining adhesive from the battery wells, apply pre-cut adhesive strips, and press the new batteries firmly into place.
After your Samsung Galaxy Z Fold 4 5G battery replacement
Power the Galaxy Z Fold 4 5G 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 Z Fold 4 5G 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 Z Fold 4 5G battery replacement at LML Repair in Seattle — same-day options available.
