Logitech MX Ergo Battery Replacement

Introduction

Use this guide to replace the battery in a Logitech MX Ergo.

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.

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

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Étape 1 Power off the mouse

Logitech MX Ergo Battery Replacement, Power off the mouse: étape 1, image 1 de 3

Logitech MX Ergo Battery Replacement, Power off the mouse: étape 1, image 2 de 3

Logitech MX Ergo Battery Replacement, Power off the mouse: étape 1, image 3 de 3

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

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Étape 2 Remove the cover

Logitech MX Ergo Battery Replacement, Remove the cover: étape 2, image 1 de 2

Logitech MX Ergo Battery Replacement, Remove the cover: étape 2, image 2 de 2

Remove the magnetic cover by pulling it away from the bottom mouse half.

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Étape 3 Remove the case screws

Logitech MX Ergo Battery Replacement, Remove the case screws: étape 3, image 1 de 1

Use a Torx T6 screwdriver to remove the six 5.7 mm-long screws securing the two halves of the mouse together.

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Étape 4 Remove the trackball

Logitech MX Ergo Battery Replacement, Remove the trackball: étape 4, image 1 de 3

Logitech MX Ergo Battery Replacement, Remove the trackball: étape 4, image 2 de 3

Logitech MX Ergo Battery Replacement, Remove the trackball: étape 4, image 3 de 3

Insert a spudger into the hole on the bottom of the mouse, located under the trackball.
Use the spudger to push the trackball out of its recess.
Remove the trackball.

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Étape 5 Unhinge the plastic clips

Logitech MX Ergo Battery Replacement, Unhinge the plastic clips: étape 5, image 1 de 3

Logitech MX Ergo Battery Replacement, Unhinge the plastic clips: étape 5, image 2 de 3

Logitech MX Ergo Battery Replacement, Unhinge the plastic clips: étape 5, image 3 de 3

There are clips all around the perimeter of the mouse case holding the two halves together.
Insert an opening pick into the gap on the right side of the mouse.
Rotate the opening pick about 30 degrees to unhinge the plastic clip.

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Étape 6

Slide the opening pick to the lower right side of the mouse.
Rotate the opening pick about 30 degrees to unhinge the plastic clip.

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Étape 7

Slide the opening pick to the bottom side of the mouse.
Rotate the opening pick about 30 degrees to unhinge the plastic clip on the bottom end of the mouse.

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Étape 8

Slide the opening pick to the center of the left side next to the recess of the trackball.
Rotate the opening pick to unhinge the remaining plastic clip.

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Étape 9 Create access

Logitech MX Ergo Battery Replacement, Create access: étape 9, image 1 de 3

Logitech MX Ergo Battery Replacement, Create access: étape 9, image 2 de 3

Logitech MX Ergo Battery Replacement, Create access: étape 9, image 3 de 3

Don't completely separate the two halves yet—they're still tethered together by a delicate cable.
For better access, place the top half of the mouse to the left of the lower half of the mouse.

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Étape 10 Disconnect the interconnect cable

Logitech MX Ergo Battery Replacement, Disconnect the interconnect cable: étape 10, image 1 de 2

Logitech MX Ergo Battery Replacement, Disconnect the interconnect cable: étape 10, image 2 de 2

Use the pointed end of a spudger to gently lift the left side of the black sliding lock on the interconnect cable socket until it stops.

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Étape 11

Use the pointed end of a spudger to gently lift the right side of the black sliding lock on the interconnect cable socket until it stops and the cable is no longer locked in.

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Étape 12 Remove the top half of the mouse

Logitech MX Ergo Battery Replacement, Remove the top half of the mouse: étape 12, image 1 de 3

Logitech MX Ergo Battery Replacement, Remove the top half of the mouse: étape 12, image 2 de 3

Logitech MX Ergo Battery Replacement, Remove the top half of the mouse: étape 12, image 3 de 3

Remove the top half of the mouse.

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Étape 13 Disconnect the battery

Logitech MX Ergo Battery Replacement, Disconnect the battery: étape 13, image 1 de 2

Logitech MX Ergo Battery Replacement, Disconnect the battery: étape 13, image 2 de 2

Use the pointed end of a spudger to push the battery connector up and out of its socket.

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Étape 14 Pry out the battery

Logitech MX Ergo Battery Replacement, Pry out the battery: étape 14, image 1 de 3

Logitech MX Ergo Battery Replacement, Pry out the battery: étape 14, image 2 de 3

Logitech MX Ergo Battery Replacement, Pry out the battery: étape 14, image 3 de 3

Insert the long edge of an opening pick between the battery and its housing at the side opposite the battery cable.
Push 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. Don't bend or deform the battery.

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Étape 15 Lift out the battery

Logitech MX Ergo Battery Replacement, Lift out the battery: étape 15, image 1 de 2

Logitech MX Ergo Battery Replacement, Lift out the battery: étape 15, image 2 de 2

Use you fingers to lift the battery out of its housing.

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Étape 16 Remove the battery

Logitech MX Ergo Battery Replacement, Remove the battery: étape 16, image 1 de 2

Logitech MX Ergo Battery Replacement, Remove the battery: étape 16, image 2 de 2

Use your fingers to carefully pull the cable out of the socket.
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.
Follow this guide to install new precut adhesive.

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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.

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