Logitech G903 Battery Replacement

Written By: Dominik Schnabelrauch

Comments: 4

Difficulty

Moderate

Steps

Time Required

25 - 45 minutes

Introduction

Use this guide to replace the battery in a Logitech G903.

If your battery is swollen, take appropriate precautions. For your safety, discharge your battery below 25% before disassembling your device. This reduces the risk of a dangerous thermal event if the battery is accidentally damaged during the repair.

This guide requires removing the mouse feet. If you’re planning to reuse your existing mouse feet, note that the adhesive needs to be thoroughly heated for them to be cleanly removed.

You might need replacement adhesive to reattach components when reassembling the device.

Tools

Step 1

Before you begin, flip the mouse's power switch into the red OFF position.

Step 2

If you’re planning to reuse your existing mouse feet, note that the adhesive needs to be thoroughly heated to cleanly remove them.
Heat an iOpener and apply it to the bottom mouse foot for two minutes.
A hair dryer or heat gun may also be used, but be careful not to overheat the mouse—the internal battery is susceptible to heat damage.

Step 3

Slide an opening pick under an edge of the bottom mouse foot.
Go slowly, and make sure the pick is underneath both the foot and its adhesive layer if you want to reuse the foot. It's easy to separate the foot from its adhesive.
If the foot feels stuck, apply more heat before continuing.
Slide the pick under the rest of the foot until you can lift it off the mouse.
Remove the foot.

Step 4

If the adhesive separated from the foot:
Slide the flat end of a spudger under an edge of the adhesive. If the adhesive seems stuck, you may need to heat the adhesive further.
Peel the adhesive off.
Before installing new feet or reinstalling old ones, wipe away any adhesive residue from the mouse with a lint-free cloth and high-concentration isopropyl alcohol.

Step 5

Repeat the previous mouse feet removal procedure and remove the two pentagonal mouse feet on the left and right side.

Step 6

The Logitech sticker at the bottom of the mouse is very heat sensitive and crumbles easily. In case you want to keep that sticker intact apply as little heat as possible and remove the sticker carefully.
If you don't want to remove the sticker all the way, you can puncture it with a screwdriver where the two screws are located beneath it. Use this picture to make sure you're hitting the right spots.
Heat an iOpener and apply it to the Logitech sticker to loosen its adhesive.

Step 7

Slide an opening pick under an edge of the Logitech sticker.
In case you want to reuse the sticker go slowly, and avoid tearing or crumbling the sticker.
If the sticker feels stuck, apply a little bit more heat before continuing.
Slide the pick under the rest of the sticker until you can peel it off the mouse.
Remove the sticker.

You don't need to fully remove this sticker, all you need to do is flip the thinnest part (like till you reach the part like in the photo above), put the screwdriver in, unscrew the screw, take the screw out and stick the sticker back on. Do the same with the other screw and during the assembly.

Adam “Mavi” Kroupa -

Step 8

Use a Phillips screwdriver to remove the seven 4.5 mm screws securing the two halves of the mouse together.
The top middle screw may be a Torx T5.

You'll need a T5 bit to remove the seventh top screw.

Olivier Charbonneau -

It used to be that on the older models, but on the newer one I just opened it had a Philips for that last one too, just like the guide shows.

Remy Monsen - 29/11/22

Step 9

Don't completely separate the two halves yet—they're still tethered together by a delicate cable.
For better access, open the top half of the mouse in the direction of the rear end.

Step 10

Use a spudger, an opening tool, or your fingernail to flip up the small, hinged locking flap on the interconnect cable ZIF connector.

Step 11

Use a pair of blunt nose tweezers or your fingers to slide the interconnect cable out of its socket.

Step 12

Use a pair of blunt tweezers to grasp the sides of the battery connector.
Pull the connector up and out of its socket, gently rocking it back and forth to loosen the clips securing it.

Step 13

Remove the top half of the mouse.

Step 14

The battery housing is not in direct contact with the outer mouse cover. Because of that you might need to repeat the heating procedure a couple of times to loosen the battery adhesive enough in order to remove the battery.
Heat an iOpener and apply it to the back of the mouse.
A hair dryer or heat gun may also be used, but be careful not to overheat the battery as it is susceptible to heat damage.
At higher temperatures the plastic mouse cover becomes heat sensitive. Avoid overheating it.

Step 15

Insert an opening pick in to the gap between the battery housing and the battery at the side opposite to the battery cable.
Slide the opening pick under the battery and lift up to pry the battery off of its housing.
Make sure you push underneath the battery and not into it. Take care not to puncture or bend the battery with your tool—a punctured or bent battery may leak dangerous chemicals or cause a thermal event.
In case you have trouble prying up the battery with an opening pick, you can try to use a spudger instead as seen in this picture. When working with a spudger take extra care not to bend the battery.
If you encounter significant resistance, pause and heat the adhesive further.
Remove the battery.
Do not reuse the battery after it has been removed, as doing so is a potential safety hazard. Replace it with a new battery.
It is likely you can reuse the old adhesive with the new battery. If you wish to replace the adhesive instead, remove the old adhesive and wipe away any adhesive residue with a lint-free cloth and high-concentration isopropyl alcohol.

Conclusion

If possible, turn on your device and test your repair before installing new adhesive and resealing.

Secure the new battery with pre-cut adhesive or double-sided adhesive tape. In order to position it correctly, apply the new adhesive into the device at the places where the old adhesive was located, not directly onto the battery. Press the new battery firmly into place.

Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.

For optimal performance, calibrate your newly installed battery: Charge it to 100% and keep charging it for at least 2 more hours. Then use your device until it shuts off due to low battery. Finally, charge it uninterrupted to 100%.

To reassemble your device, follow the above steps in reverse order.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Check out our Answers community for troubleshooting help.

Author

Dominik Schnabelrauch

Member since: 23/11/16

201162 Reputation

One comment

This guide helped me on my G900's battery. Thank you!

Travis Moore -