I’d read that Tesla actually developed the 21700 cell. It was first mass produced in 2017. Wouldn’t they’ve converted the battery packs on their cars with this type by now? Or is it limited use with 18650 still the predominant cell in their packs?
The F34 batteries that they tested back in June and July don’t have a circle on the bottom and they don’t have the same top as those in the cardboard box pictures labeled as T1. Are you changing the F34?