The airpodspro charging bin can be opened without power, but it can not be connected to the phone, and the main function of the button of the Bluetooth headset charging bin is to pair the airpods and the phone. The charging bin of the Bluetooth headset is equivalent to the mobile charging bank of the Bluetooth headset, which can be put into the Bluetooth headset and supplemented with power, generally providing wired charging and wireless charging. The AirPod headphone case has no power, you can directly press and hold the headphone function button for 3 seconds to turn on.