The uConsole negotiates with USB-C PD to pull 5V using 5.1kOhm resistors on the USB-C CC pins as shown on the schematic (R510 and R511); using an Anker Nano II 65W USB-C PD supply capable of delivering 5V 3A (15W), my meter shows 5.3V 2.5A (~13W), so the maximum input wattage is probably nominally 12.5W. Meanwhile my Anker PowerPort III Nano 20W USB-C PD supply only delivers 5.1V 2.2A (~11W), despite also being rated for 5V 3A, so do with that what you will.