The USB charger is equipped with two QC3.0 ports, supporting QC3.0 charging. Each port supports up to 18W output power and the total maximum output power is 36W. With two QC3.0 ports, two devices can be charged simultaneously. With smart charging technology, when you connect your device to the USB charger, it will automatically detect and scan the device to define the maximum current. The output current of the USB Charger will adjust in order to provide optimal charge speed and performance. As a result, it can provide stable and optimal charging conditions for the compatible devices.