Fire extinguisher

The link in post #1 has a Jay Leno video. The guy he interviews says the Element doesn't displace oxygen and it's not toxic. He doesn't use it on a fire in the Jay Leno vid. Hmmmm.
It sure doesn't appear to work very well in the video in post #14.

Years ago, my partner was driving through the pits, and people saw fire. We had a halon bottle, because we didn't want the corrosive results from powder. Everyone came running with powder bottles and sprayed them all over our engine before he could get out with the halon. We certainly appreciated the help, but our engine compartment was a mess.
We never considered the possibility of not getting the chance to use our bottle!

I used a powder bottle on a fire once. It stopped spraying just before the flame was out. The fire commenced.
I've heard that the powder can cake up in the bottom of powder bottles if you don't shake them periodically. Maybe that's why the powder stopped coming out? Who knows? My powder bottles always show a good charge. But so did the one that stopped spraying just before the fire was out.