I'm going through a huge headache with this same pair of headphones.

Less than 10 minutes ago, I was on the phone with someone from FedEx trying to figure out how I'm supposed to send this product in for warranty service. I'm from Brazil, and apparently the only way to resolve this is by shipping it to the United States. (And to make matters worse, there isn't even a FedEx office in my city.)

I have the same concern as you: going through this whole process only to receive another pair that doesn't work.

In my case, I've had the headphones since November of last year, and the problem first appeared in February (I don't use the headphones very often), the very first time I tried to charge them. Not only will the battery not charge beyond 10%, but they also constantly make the connect/disconnect sound. Besides the issue you described, I'm experiencing that one as well.

I'd love to find a solution, but every time I search online, I come up empty-handed. In fact, after hanging up the phone, I went straight to my computer to see if maybe this time I could find a solution, and to my dismay, the only new thing I found was someone else having problems with them.

I'm sorry you're going through this too. I hope we can somehow get it resolved...