I mean, their battery lasts so much…I’ve never needed to charge them while using them. At some point I might click power without noticing and it will say “battery low”…and then I know after using them this time I’d need to recharge them. But even then, it’s not in a hurry, I know I can continue using them comfortably for as long as needed, just this time I need to remember to charge them. Call quality has been improving, and this time they have ANC also for the mics, so your other party gets noise from the street cancelled…this was an issue with my XM2, talking on a noisy street is a no-go, but with these XM5, is now perfectly ok…at least to me in a bustling city full of people and traffic.