[ok_dad]

I would guess it would be something like "X% of minerals must go to battery manufacturing locally" and the target would be to produce at least enough batteries to support any electrification needed in Brazil.

If I were in charge, I would want to keep nearly all of that manufacturing and minerals in-country and export battery cells initially, and later full systems that integrate the battery cells, and as the manufacturing capabilities expand I would start to add tarriffs to battery cell exports but ensure the systems that integrate the cells are able to be exported pretty easily. I would ensure to define the "system" as something more than a few battery cells wired together, it would have to be a fully integrated battery pack for a home or commercial building or a car maybe, or some other product that is similar. I would want to focus on vehicular and grid based energy systems, not consumer products because those batteries should eventually get replaced with supercapacitors and battery tech that is less unstable. I would never export minerals for batteries, though, I would just force companies to invest in manufacturing in Brazil.