cannot
Mobile phone charging head and Bluetooth headphone charging head are not universal, be sure to use a Bluetooth dedicated charger.
First, the interface of the charger is different, the connection is not up, there is no way to charge.
Second, even if the interface is the same inside the structure is different, it is easy to plug the two interfaces.
Third, it is easy to impact the battery of the Bluetooth headset and damage the battery of the mobile phone.
Fourth, the Bluetooth headset should be charged with a special charger.
Yes, if the wireless headset supports fast charging, then the super fast charging head can charge it, and the charge can be full in a short time. If the wireless headset does not support it, it is best not to use it casually, otherwise it will damage the headset.
Yes, but not recommended, after all, the current voltage is not the same.