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.
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Remove the right speaker cover by lifting it up, using your hands, from the rest of the headset.
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Remove the two screws that secure the PCB with a a Phillips #0 screwdriver.
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Flip the board over, with care not to strain the attached wires.
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Desolder the battery connections.
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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.
