How do I charge a power bank for the I-13/I-16?

Using the USB-C Charger:
Select and connect the correct wall plug to the charger.
           
Note: Included wall plugs are:
            Type A (North America, Japan) (built in)
            Type C (Europe, South America, Asia)
            Type G (U.K.)

Connect the USB-C side of the included cable to the USB-C IN/OUT on the Powerbank.
Connect the USB-C side of the included cable to the charger.
Connect the charger to an electrical outlet and charge the Powerbank until the battery is fully charged.
           
Using Other Charger:

Note: Make sure the output voltage of the charger falls within these ranges:
            DC Output 4.5V – 36V, Up to 3A (2W -45W)
            USB-C Output: 40W