This battery pack is on sale again, cheapest it has been posted on OzB. Stand out points include 45W (20V 2.25A) USB-PD output support which is important for laptops and other high powered devices.
If you are happy with 40W output the Xiaomi ZMI is a better deal although it doesn't appear to be much cheaper at the moment and a lot of sellers no longer ship to AU due to ICAO regulations.
Due to new airline safety regulations announced by the ICAO, pure power products (e.g. Batteries, Power Banks) are currently not allowed to be shipped by Airline service with the exception of the following 24 countries:
Russian federation, Belgium, Poland, Denmark, France, Finland, Netherlands, Czech republic, Croatia, Lithuania, Luxembourg, Romania, Sweden, Slovenia, Spain, Italy, United kingdom, Austria, Hungary, Ireland, Norway, Portugal, Slovakia, Switzerland
Please note that any purchases for such items from countries other than these will be cancelled.
USB-C Input (PD):
5V-3A (15W), 14.5V-2A (29W), 20V-1.5A (30W)
USB-C Output (PD):
5V-3A (15W), 9V-3A (27W), 12V-3A (36W),
14.5V-3A (43.5W), 20V-2.25A (45W)
USB-A Output 1 (QC 3.0):
5V-3A (15W), 9V-2A (18W), 12V-1.5A (18W)
USB-A Output 2:
Total Output: 63W
171mm (W) x 102mm (H) x 15mm (D)