recycled (see link) once their usage becomes widespread...never mind the significant resources of Lithium to begin with...so, yes, we can have as much as we need long into the future.
Once you burn the Fossil Fuels, you're DONE with them...except for the CO2 that accumulates in the atmosphere...and have thrown away the potential for 'Recycling' them for their other unique uses (e.g. Plastics) that are so valuable today...and in the future.
Why on earth do you want to consume FFs when there are other technologies (Nuclear, Solar, Wind, Hydroelectric) that can provide Heat and Power?...makes no sense to me, or the leaders of 193 countries, plus the EU...maybe you have a convincing argument...let's hear it.
Link: https://www.solarreviews.com/blog/are-lithium-ion-batteries-recyclable