[Yardstick]

Pretty clever seeming. Reminds me of reusing spent nuclear fuel.

I wonder if batteries eventually stabilize to a lower capacity, like say 50% of original, and then kind of stay there, or do they taper down to zero. IOW is there a plateau or a slope.

[M. Dodge Thomas]

Typical LI capacity degradation curve.

Detailed discussion:

https://pubs.rsc.org/en/content/articlehtml/2021/cp/d1cp00359c