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Bose's first wireless noise-canceling headphones, praised for their industry-leading noise cancelation technology and comfort. Released in June of 2016.

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How do I change the battery?

How do i change the battery?

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Are you kidding! This is ridiculous. My old one, you simply opened , slipped in a new AA and off you went. If this is the case with the battery on the new headphones, I may return them.

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You must desolder it. There is now a partial teardown guide that includes how to access the battery. Bose QuietComfort 35 PARTIAL Teardown

I’m not sure what type of battery to replace it with though.

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I found a battery.

https://www.ebay.co.uk/itm/3-7V-500-mAh-...

It’s the wrong shape, but I made a small hole for the wires in the side of the battery compartment, and I hotglued it just outside the compartment.

Unfortunately the battery light still stays on even when the headset is off.

I think there must be something in the firmware which turns on when a battery reaches end of life, and I don’t know how to reset that despite installing the new battery.

However, the headset turns on now and seems to charge correctly.

I’m going to see if I can reset the firmware somehow.

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There doesn't seem to be any way to solve the battery light issue. If anyone works out a fix please post. I'll just live with it for now, it's not that big a deal.

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Turns out they drain a significant amount of power in this mode.

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Rowdy Bedsaul will be eternally grateful.
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