It's funny but somehow people think that every single cell get's tested when the things come out of the machinery like Bullets from a .30CAL GPMG. The cells are sampled during production runs, they pull out random cells and seriously test them. Some bad batches & cells get through.
CASE IN POINT - LG & Chevy Bolt ! They are recalling ALL of the Bolts and replacing ALL Of the battery packs because SOME had folded separators, some had torn tabs and both conditions resulted in runaway thermal events. This damage happened During Production, Internal to the machines, and was NOT CAUGHT by Sampling Tests, Those BTW Are POUCH Li-Ion cells.
If they catch flaws During Batches, they can & often pull the Batch if there is a serious error. Some goto Recycle (if that bad) and the rest can end up in Grey Market B or worse graded. Battery Brokers scoop these up and flog them off.
LFP Licenses are locked till 2022 and then Global Production can occur. Note IP Rights. Part of that was covered here:
https://diysolarforum.com/threads/l...ns-affecting-auto-industry.25549/#post-301877
LFP produced in Canada ! Yes, already started
https://volthium.com/en/
LFP and any Lithium is NOTHING like Lead or Alkaline batteries in ANY way. There is no comparison.