According to recent reports[1], Tesla is transitioning to using Iron Phosphate (LFP) Li-ion cells in it's Megapack stationary storage products. Unlike nickel-based cells, LFP is highly resistant to fire and thermal runaway.
Presumably, this particular installation was still using nickel-based cells.
Presumably, this particular installation was still using nickel-based cells.
[1] https://cleantechnica.com/2021/05/11/tesla-transitions-to-lf...