this post was submitted on 27 Jul 2024
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You are right for fires involving electronics, cables and alike. However, the German Accident Insurance Institution (DGUV) actually recommends water for extinguishing burning lithium ion batteries and forbids the use of anything other (CO2, anti metal fire powder, ABC powder, BC powder,... )
If an EV is burning the fire fighters extingush the fire with water and as soon as the EV is cooled enough to allow some handling it is put into a container filled with water for a quite long time.
wtf? why don't they allow this? after all it is a matter of life and death!
Perhaps, as the medium shall fulfil either of both tasks, keeping oxygen out and cooling, the others are not effective enough in cooling.
"Forbids" here is more like "are not to be used", as against recommendations, rather than illegal.
Unless I'm reading it wrong, that pertains to small LI batteries for household objects, like laptops and wireless screwdrivers, ie. stuff that can plausibly fit into a basin full of water. not sure it would apply to a whole car.
See this site (unfortunately in German, but some pictures) on how it is done with EVs.