massively undervalued, page-12

I’ll give it a go:

machines need power
electricity can be used to power machines
batteries can be used to store electricity (aka batteries are cool)
magnis plans to make batteries
because batteries are cool people will buy batteries
magnis plans to sell batteries for more than they make them
that extra money is called profit
people can buy shares in magnis
if Magnis makes a profit the company often shares that money with the people who hold shares (ie shareholders)

I might have missed some steps but that is the gist AFAIK

NOT financial advice. Do your own research