[tomxor]

That is a big assumption but yes, I understand that "reserves" != "all", and you rightly describe the interrelationship between price and what is considered "extractable".

Even so, as an initial "world reserves" estimate, it's absolutely puny. Take into consideration that past the first "dozen years" demand will increase massively, at full adoption lithium will likely be short lived as a primary material to base batteries on. We don't know the extraction potential for whatever the "remaining" and "unknown" reserves are but thankfully EVs aren't intrinsically tied to lithium like ICE is to oil, so if lithium becomes overmined we are more likely to switch to other materials than go to extremes to extract more of it.