Battery Pack Mount

I quickly made this to mount a battery pack inside a motorized iron man helmet I was working on as a power source. It is not shaped to the inside of the iron man helmet, but I plan on just using a mixture of epoxy and plastic welding to affix it to the inside of the helmet permanently.
It uses 8mm by 3mm (DxH) magnets, which I used super glue to hold them in, and affixing them to the power bank itself.
The below links are the power bank and the magnets that I bought, but I'm sure they can work on most power banks that have a flat side.
https://www.amazon.com/gp/product/B09B3FSL1T/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B09BJWH2BQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1