For those of you too good for the Baseus Power Bank deal (https://www.ozbargain.com.au/node/714583), purchase your aspirational Anker Power Bank instead!
Specifications from the Anker website: https://www.anker.com/products/a1231-2
Recharging Time: 4.5 hours (with 18W USB PD charger & USB-C to C cable)
USB-C Input (PD): DC 5V=3A, 9V=2A, 15V=1.2A
USB-C Output (PD): DC 5V=3A, 9V=2A, 15V=1.2A
USB Output : DC 5V=2.4A
Total Power Output: 18W
Note:
• Will charge Nintendo Switch but does not support "Charge-and-Play" in TV mode.
I think this one is the 20w version …so
https://www.anker.com/products/a1244