Recycling is already a key focus, as batteries are very mineral rich, and at scale much cheaper to refine locally than to mine & import with long supply chains.

For those that doubt it's possible to collect spent batteries; recycling rates for lead acid car batteries is already 99%. They virtually never end up in landfills.

Lithium abundance in battery waste is probably higher than in natural deposits. I doubt that huge landfills of battery waste will exist for very long as Lithium demand continues to soar.

I strongly suspect you might be disappointed. Battery collection and recycling - even as “raw ore” - should be easily profitable with plenty of motivated parties eventually. In the meantime, redwood materials will probably make quite a bit of money.