I thought my AirPods batteries were already aging out of their useful life span, due to quick draining on numerous hour long phone calls today and last week. It turns out, talk time is only “up to 2 hours”, while listening time (my main use case) is 2 1/2 times that.
AirPods (single charge): Up to 5 hours listening time,(2) Up to 2 hours talk time(5)
So…phew! I’m more worried about having to replace them after less than two years due to a battery issue than about shorter battery life on calls.