saptzae,
Rather, by what we see, all boils down to inadequate management, on all levels.
Primarily, of the cells, so they short.
Secondarily, of the cell short, leading to the conflagration
That 100+ batteries got line replaced
Inadequate management at the internal short stratum? Primary? It must be prevented, not managed, to wit:
Management at the secondary level, post internal short, is not management, it is shutdown.
Management can not rectify the problems we see.
Internal short, leading to shutdown, takes a safety critical system "offline".
Internal short or any failure leading to FIRE, is disqualifying of the Battery's installation, let alone management......
The "FIREBOX" may work, but it is extraneous, the battery cannot be aboard, if there is even possibility of FIRE, by rule.
Do you see this?