> I suspect the rationale is that any potential for exposing new parts of the battery chemistry to water are dwarfed by the effectiveness of stopping the thermal runaway, and battery chemistry that's already reacted can't react again.
Immediately following that clip is an exhibit showcasing the deployment of a Halon extinguisher to extinguish the fire followed by water to cool the battery pack.
Given that the clip is listed as methods to put out such fires, listed in order of effectiveness, most effective first, yes of course they list other methods, but as you can see they consider water most effective, halon + water for cooling less effective, and halon alone barely effective (the fire restarts).
> https://youtu.be/vS6KA_Si-m8?t=185
> I suspect the rationale is that any potential for exposing new parts of the battery chemistry to water are dwarfed by the effectiveness of stopping the thermal runaway, and battery chemistry that's already reacted can't react again.
Immediately following that clip is an exhibit showcasing the deployment of a Halon extinguisher to extinguish the fire followed by water to cool the battery pack.