Not to mentioned all the dirty cheap second hand batteries becoming available as electric cars are scrapped.
For grid storage second hand batteries might be fine. If taking them out of a scrapped car is feasible.
For grid storage second hand batteries might be fine. If taking them out of a scrapped car is feasible.
https://www.youtube.com/watch?v=JqlOlqK_ot8
2nd life use cases for cheap, mass produced batteries like this are more common than you think.