Not sure how to check other stores stock level.
https://files.ozbargain.com.au/upload/294864/112873/img_8143…
- Lithium ion battey pack
- Capacity: 48000MAH
- LED light
- USB Output: 5V/2.1A
- AC Output power: Max.200W
- Type C input/output: Max PD100W
- QC3.0 Output: 5V3A, 9V/2A, 12V/1.5A
- DC input: 5V-20V/2A
- DC output: 12V-16.8V/6A
Here you are mate. Stock levels : https://nrby.in/bunnings/0443098
Looks like heaps of stock.