You can connect an external device to the USB-C™ port to charge it.
Charging the notebook PC battery via the USB-C™ port is not supported.
The external devices that use the USB-C port support 10 W (5 V / 2 A) and 15 W (5 V / 3 A) in AC mode, and 7.5 W (5 V / 1.5 A) in DC mode.
In AC mode, a USB device compatible with USB PD (Power Delivery) supports charging at 15 W, whereas a regular USB device supports charging at 10 W. In DC mode, both USB PC and a regular USB device support charging at 7.5 W (5 V / 1.5 A) only.
Always-On Charging is supported only with USB-C™ ports, but not with the regular USB ports.
If you connect an AC adapter while the notebook PC is being used to charge an external device, it may take more time to charge the notebook PC.
The charging status of the external device being charged is not displayed on the notebook PC.
If you connected a smartphone, you should select "Charge mobile phone" on the smartphone screen to charge the phone battery.