Solution
To charge/power the camera using a USB connection, please use the USB Power Adapter PD-E1 (sold separately).
Kindly be advised that Canon is unable to guarantee the operations of the camera and the mobile battery used, if a commercially-available USB-compatible equipment is connected to the camera.
Canon has verified the operations of the following product.
However, please note that we are unable to guarantee all operations of the product in concern. (As of July 2020)
Anker PowerCore+26800PD 45W*
* The operations of the bundled cable (Anker Powerline III USB-C & USB-C 0.9m) have been verified.