Introduction

If your Cowin E7 Bluetooth wireless headphones can not hold a charge, are not charging, or have a significantly less battery life than before, you most likely need to replace the battery.

A battery is what gives the headphones power to properly function. After various uses and charging the battery wears down, decreasing battery life or causing the headphones to have no power. This requires for the battery to be replaced after a while.

It is important to note that the headphones must be off before replacement, and batteries can be a fire hazard so they must be properly disposed of.

What you need

Step 1 Battery

Cowin E7 Battery Replacement, Battery: step 1, image 1 of 2

Cowin E7 Battery Replacement, Battery: step 1, image 2 of 2

Remove the right speaker cover by lifting it up, using your hands, from the rest of the headset.

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Step 2

Turn the headphones over and use an opening tool to pry up and remove the ear pad.

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Step 3

Use a Phillips #0 screwdriver to remove the four screws that secure the driver housing.

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Step 4

Remove the two screws that secure the PCB with a a Phillips #0 screwdriver.
Flip the board over, with care not to strain the attached wires.
Desolder the battery connections.
The battery connections are labeled "BATT."

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Step 5

Turn the headphones over and remove the battery.

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Conclusion

To reassemble your device, follow the above steps in reverse order.
For optimal performance, after completing this guide, calibrate your newly installed battery.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.