Batteries are interesting, but just not as important strategically as steel. Though you could probably make a lot of money in this trade since Babylon needs lithium-ion to power her kids' smartphones so they can fornicate with the most wicked men and women on Tinder.
China owns a little more than half the worlds lithium ore, electric cars and many others things are not that far off, world oil reserves are set to end in 43 years if things go that far. steel isn’t much but a front.