[goofymiron]

Awesome! My current noise-cancelling headphones have lost their noise-cancelling ability and bluetooth connectivity due to the battery dying. Can only listen to music over a cable now.

Would have loved to be able to replace the battery in my headphones and imho this should be the standard for all headphones/electronic devices

[ipsum2]

Which headphones do you have? It's not hard to replace the battery in most popular brands.

[pca006132]

How old is that headphone? My $100 sennheiser works well for 5 years now, without any sign of battery dying... Although it does not have noise-cancelling.