Sena 30K Rechargeable battery Replacement

Introduction

The battery of almost all electronic devices wears out over time. My Sena 30K is now 4 years old and has about 400 charging cycles behind it. Meanwhile, the battery only lasts 2 hours when I have my phone plugged in to listen to music and my mesh intercom activated at the same time. With this guide, you can replace your battery and restore your Sena's full performance.

If your battery is swollen, take appropriate precautions.

This guide describes how to open your Sena and remove most of the device to access the battery.

For optimal performance, you should calibrate your battery after completing these instructions: Charge it to 100% and let it charge for at least two more hours. Then use your Sena until it turns off due to a low battery condition. Then charge it to 100% without interruption.

What you need

Step 1 Preparation of your device

Switch your Sena off and remove all connections (helmet mount / charging cable).

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Step 2 Remove all the screws

Sena 30K Rechargeable battery Replacement, Remove all the screws: step 2, image 1 of 1

Tool used on this step:

FixMat

$36.95

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Use a Phillips screwdriver to remove the seven screws which secure the front cover:
Two 1.7 mm screws
Five 1.9 mm screws
A Phillips screwdriver size #0 should fit.
Throughout this repair, pay attention to each screw and make sure it goes back exactly where it was before so your steam deck doesn't get damaged.

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Step 3 Open up your Sena

Carefully remove the front cover from the main housing.
If you have trouble removing the cover near the knob, use a pick to loosen it from the gasket.
Make sure your mesh antenna is locked into the housing so that it does not fall off when you remove the front cover.

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Step 4 Remove the helmet mount connector

Sena 30K Rechargeable battery Replacement, Remove the helmet mount connector: step 4, image 1 of 1

Remove the bottom connector which connects the Sena to the helmet mount.
The connector itself is a PCB, so don't apply to much bending force.
Use tweezers to open a little gap between the case and the connector. Then try to insert a pick to get it out of its socket.