Logitech G435 Battery Replacement

Power off the headset and unplug all cables.

With one hand, firmly hold an ear cup steady.

With your free hand, slowly pull the ear pad away from the cup until it slides completely off its plastic lip.

Repeat the process to remove the other ear pad.

Use angled tweezers to peel up and remove the sticker covering the top-left speaker plate screw.

Use a T5 Torx driver to remove the four 6.1 mm‑long screws securing the speaker plate.

Use your fingers to swing the speaker plate out of the housing.

Use some tape to secure the speaker plate to the headband. This keeps the speaker plate out of the way while preventing the speaker wire from being strained.

Use a Phillips screwdriver to remove the two 4.6 mm‑long screws securing the circuit board.

Use your fingers to lift the circuit board slightly out of its recess.

Flip the circuit board over so you can access the underside.

Use tweezers to firmly grip the edges of the battery connector.

Gently rock the connector side-to-side and slide it out of its socket.

Insert the flat end of a spudger underneath the battery.

Pry gently to release the battery from the ear cup.

Remove the battery.

Use your fingers to peel the foam pad from the battery.

Transfer the pad onto the same side of the replacement battery.

Cut and attach a small strip of double-sided tape onto the battery.

Use your finger to press the battery onto the ear cup such that the wires face towards the circuit board socket.

Use your fingers to slide the battery connector fully into its circuit board socket.

Use your fingers to gently flip the circuit board back over its recess.

Align the circuit board notch on the right side of the USB-C port to the ridge on the ear cup.

Insert the circuit board at a downward angle and guide the USB-C port into its cutout.

Press the bottom edge of the board against the ear cup and tilt the board down.

This is a tight fit, as the board has to clear the screw post next to the port to be properly seated.

Use a Phillips screwdriver to install the two 4.6 mm‑long screws to secure the circuit board.

Use your fingers to swing the speaker plate back into place.

Use a T5 Torx driver to install the four 6.1 mm‑long screws to secure the speaker plate.

Orient the ear pad so the wider part is at the top.

With one hand, firmly hold an ear cup steady.

With your free hand, place the pad over the top of the cup, so the black fabric flap slips over the cup's plastic lip.

Thread the rest of the flap over the lip, working your way around the entire cup. Gently stretch the pad as necessary.

Check the entire perimeter of the cup to make sure the ear pad is fully on. If any of the fabric flap is sticking out, try to push it over the lip or remove the ear pad and try again.