A giant Tesla battery pack burst into flames during testing, and it took 150 firefighters 4 days to put outhttps://www.businessinsider.com/tesla-megapack-battery-fire-burns-four-days-testing-australia-2021-8This is one of the reasons I wanted the lithium ferrophosphate batteries in our battery pack* rather than the lithium cobalt batteries that Tesla uses.
*installed but not operational due to 1) a fault inverter from the manufacturer and 2) pending PGE Permission to Operate. Should have battery backup within 2 weeks.