this post was submitted on 08 Sep 2026
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A fire extinguisher ain’t gonna touch a battery fire. There really isn’t much you can do besides keep things away from it while it burns itself out.
You can drop the whole thing into a tank of water. Cooling it down is basically the only way to stop an EV fire because it's an exothermic, often self oxidizing reaction.
Fire departments are starting to deploy mobile water containers for it.
Damage to the cells can make them ignite. Fires cause damage. They are known to reignite later.
But at least you can tow them somewhere else to burn.
Putting lithium batteries in water doesn't sound like the move to me...
Lithium batteries contain little to no pure lithium.
It's similar to saying that putting salt in water is a bad move because pure sodium reacts violently with water.