Re: Extinguishers...
The fire triangle has 3 legs: heat, fuel, oxidizer
you break one of them to put it out. Liquid N2 would probably help a LOT in that regard.
Another thing you could use is a dry chemical that interrupts the ionic exchange at the boundary of the flame, such as PKP which is supposed to work on class D fires (like ordinance and pyrotechnics). I believe that halon can ALSO help in this way.
So maybe what is needed is an easily ionized gas that literally steals the fire and cools the fuel. This would be a good product as these surge-handling batteries become more popular.
As I recall, LiIon and LiPo usually catch fire because they were discharged too much, though charging them too fast can also cause this. It puts them in an unstable state when over-discharged. They'll 'pillow' as chemicals break down, forming (I think) hydrogen gas, or something equally bad at any rate. And of course they're made from one of the MOST reactive chemicals in the universe.
(Maybe it would be a better idea to use a safer aluminum-based battery for this kind of high power capacity application)
Biting the hand that feeds IT
