I use these headphones almost daily and they've become an indispensible part of what goes into my bag when I leave the house.
My purchase history says I've had them for a little over a year. The battery doesn't last quite as long as it did in the beginning, but it's still pretty great. I can get several hours of listening, and if it dies it charges up in about 15 minutes. That's plenty of time to last a flight, bike ride, or run.