How long does it take to fully charge the transmitters and receiver using the DJI Mic 2 Charging Case? How long does it take to fully charge the charging case?

It is recommended to use a 5V/2A charger to charge DJI Mic 2's transmitters, receiver, and charging case. At room temperature, it takes about 1 hour and 10 minutes to fully charge the transmitters and the receiver using the charging case. It takes about 2 hours and 40 minutes to fully charge the charging case.