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> While there have been repeated incidents of phones, laptops and other devices overheating and catching fire in passenger compartments of planes, it hasn’t eve
by dap 7y ago
> While there have been repeated incidents of phones, laptops and other devices overheating and catching fire in passenger compartments of planes, it hasn’t ever caused a fire to spread. The flames can be extinguished with water and flight attendants are trained how to address it.
I was under the impression that water was the wrong thing to put on a Li-Ion battery fire. Is that right?
- NikkiA 7y agoThe FAA has a video on the subject: https://youtu.be/vS6KA_Si-m8?t=185 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.
- vageli 7y ago> The FAA has a video on the subject: > https://youtu.be/vS6KA_Si-m8?t=185 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.
- NikkiA 7y agoGiven 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).
- userbinator 7y agoWater is perfectly fine. It's cheap, nonflammable, and has a very high heat capacity. Lithium ion batteries have no metallic lithium, which is what can react with water.