Sony Xperia Z3 battery repair guide

The battery life is low. Your Xperia Z3 keeps crashing or won’t charge.

In this guide, we show you how to replace your Xperia Z3’s defective battery. This repair can help if your Sony Xperia Z3 crashes during heavy use because the voltage temporarily drops, you can no longer charge it or turn it on, or the battery life is very low.

Required tools

Flat Picks

Flat Picks

You need a very flat tool such as a flat pick to pry out parts that are glued in place.
from €11.95 on Amazon
Heat gun

Heat gun

You can use a heat gun to heat parts that are glued on so they’re easier to remove. In most cases, you can also use a hairdryer.
from €15.99 on Amazon
Suction cup

Suction cup

A suction cup is perfect for lifting smooth surfaces such as displays or rear glass panels.
from €19.99 on Amazon

Required replacement part

Sony Xperia Z3 Battery

Sony Xperia Z3 Battery

from €10.47 on Amazon

Show all replacement parts for the Xperia Z3

Getting started with the repair of your Xperia Z3

If you get stuck or have questions, you can post a comment. We’d be happy to help.

5 steps

Removing the back cover
The back of the Sony Xperia Z3’s enclosure is glued firmly in place. To detach it, you have to constantly heat it with a heat gun so the glue will soften. Then you have to insert a plastic pick into the gap between the frame and the glass to detach the adhesive.

The gap between the aluminum frame and the glass is very small. We recommend that you use a very flat, sturdy object to get between them.

Carefully lift the back cover while using a suction cup.

As soon as a little gap opens up, use the plastic pick to avoid damaging the aluminum.
Inserting the pick
You should only insert the pick a few millimeters between the back cover and the frame to prevent damage inside the enclosure.
The back cover is painted on the inside. Remove any adhesive residue carefully to avoid scratches or cracks.

The back cover is glued to the entire outer edge of the Sony Xperia Z3. Move the pick once around the entire phone. There are also two removable adhesive strips attached to the battery. You can’t pull them off until you lift the top.

Once you’ve detached all the glue, you can carefully lift the back cover.

Removing the battery
Place the pointed tip of the spudger very slightly below the contact and lift it up. Make sure you don’t break off the resistors that are soldered onto the logic board.

Now slowly lift up the battery. It’s only lightly glued in place.

Then remove it.
Installing the battery
Put the battery in and connect the connector.
Attaching the back cover
As a last step, you have to attach the back cover again.

The old glue is usually still sticky enough.

Put the back cover back on, heat it slightly and then use a little force to press it onto the smartphone for a while.