This article is useful. Mentions probable proportions of metals...

This article is useful. Mentions probable proportions of metals in batteries, but not the overall proportion of Lithium, which when casings and other parts are included would indeed be quite low. I concur that there is plenty of room for lithium chemicals to rise if demand cannot keep up with production.

And, I'm keen to see the price of crude continue to rise. Higher bowser prices will "help" people to improve their desire to buy an EV. ;-)
https://www.nature.com/articles/d41586-021-02222-1#:~:text=Amounts%20vary%20depending%20on%20the,figures%20from%20Argonne%20National%20Laboratory.

"Amounts vary depending on the battery type and model of vehicle, but a single car lithium-ion battery pack (of a type known as NMC532) could contain around 8 kg of lithium, 35 kg of nickel, 20 kg of manganese and 14 kg of cobalt, according to figures from Argonne National Laboratory."