how long does the charger case charge the AirPods

If the case is fully charged you can get over 24 hours use of the AirPods. 15 minutes of charging will give approximately 3 hours of use. A full charge will give 4-5 hours of use.

They have “Hey Siri!” capabilities, wireless charging, talk time went from 2 to 3 hours, Bluetooth 5.0, 2x faster switching between devices.