Phone · Samsung · Galaxy S3 Mini
Samsung Galaxy S3 Mini Battery Replacement
Battery Replacement guide for the Samsung Galaxy S3 Mini
Before you begin
Tools
- Plastic spudger tool
- Cotton swabs
- Anti-static wrist strap
- Clean workspace mat
Parts / materials
- Replacement Samsung Galaxy S3 Mini battery (EB425161LU)
- Isopropyl alcohol (90%+ concentration)
Safety
- Do not bend, puncture, or apply excessive pressure to the lithium-ion battery.
- Keep metallic tools away from exposed battery contacts to prevent electrical short circuits.
Overview
Step-by-step
- 1
Turn off the phone
1 minPress and hold the Power button on the right edge until the device menu appears. Tap Power Off and wait until the screen goes completely dark.
- 2
Locate the back cover notch
1 minFind the small indentation on the top edge of the plastic rear cover near the headphone jack.
- 3
Pry open the back cover
1 minInsert a plastic spudger or fingernail into the notch. Pry gently outward to unclip the top corner of the panel.
- 4
Release the cover perimeter clips
2 minSlide the spudger down along the left and right sides to disengage the remaining plastic snaps.
- 5
Remove the back cover
1 minLift the rear panel entirely off the body of the phone and set it aside.
- 6
Locate the battery removal recess
1 minIdentify the small groove located at the bottom of the exposed battery bay.
- 7
Remove the original battery
1 minInsert a spudger into the battery recess and lift the battery up and out of its compartment.
- 8
Inspect the gold contact pins
1 minCheck the metallic spring pins inside the phone's battery compartment for dust, corrosion, or physical damage.
- 9
Clean the terminal contacts
2 minDampen a cotton swab with isopropyl alcohol and gently wipe the gold contact pins inside the battery bay.
- 10
Prepare the replacement battery
1 minUnpack the new replacement battery and remove any clear protective film covering its metallic contacts.
- 11
Align the battery contacts
1 minPosition the new battery so its gold terminals align directly with the contact pins in the upper corner of the battery housing.
- 12
Insert the replacement battery
1 minPress the top edge of the battery down against the contact pins first, then lower the bottom half into the bay until it rests flat.
- 13
Snap the rear panel into place
2 minAlign the back cover over the rear housing and press firmly along all edges until every tab clicks shut.
- 14
Power on and test the device
2 minPress and hold the Power button until the device vibrates and displays the Samsung Galaxy startup logo.
After your Samsung Galaxy S3 Mini battery replacement
Power the Galaxy S3 Mini 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 S3 Mini job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Samsung Galaxy S3 Mini repair context in the encyclopedia, or open related DIY guides.
