[jnw2]

I thought the typical landfill in the US is willing to accept lithium batteries, but putting a Tesla battery pack in a landfill is economically dumb compared to selling the used pack to someone interested in recycling the raw materials in the pack.

[ChuckMcM]

I should check but I believe that Tesla buys back the old batteries for just that purpose (to recycle them). Not unlike going to the auto parts store with your old alternator and getting a rebuilt one to replace it. No doubt there will be 'rebuilt' battery packs for folks on a budget.

[jnw2]

Elon commented, I think in the Foundations 20 video on Youtube, that the raw metals that go into a battery pack cost about $80/kwh.

That means that putting the battery pack from an 85 kwh Model S in a landfill is equivalent to putting a stack of over 300 $20 bills in a landfill.

(He was actually trying to make a point about how cheap battery packs might be to buy new in the future, with more efficient techniques for turning the raw materials into battery packs.)