My understanding is that is lacks certifications because the bodies like UL only certify typical pressurized cylinders, or something like that. So I think it is impossible for these to be even considered for testing (so I heard).
But I would love some kind of review / comparison from someone who has used both!
I suspect that in practiced hands a traditional fire extinguisher is probably best... but I'm thinking the longer run time may be very useful for someone using an extinguisher for the first time.
Unfortunately while often true that new tech often has to jump through additional hurdles it is also the typical marketing ploy from those who don't feel like following the certification process. In the age of Facebook many are trying to get certified through the court of public opinion.
I did find some references to this method of fire suppression, it appears to have begun development in the 1990s as a replacement for Halon systems. Halon 1211 and 1301 were very effective gas suppression systems, that unfortunately also have a negative environmental impact so have been phased out of use.
This is an interesting concept, but a bit pricey. You could easily buy 2-4 conventional fire extinguishers of adequate performance for a car for the price of one of these. The small size is definitely attractive for some applications.
The are making comparison to a 5lb ABC but don't actually claim to provide similar effectiveness. As mentioned above discharge time doesn't = effectiveness.
A 5lb extinguisher is larger than the typical small extinguisher most would buy for a car (2.5lb being typical).
Not knocking this device, but I'd want to know a lot more before I'd buy one. The lack of performance data makes it hard to make an informed decision. The typical 2.5lb ABC is rated 1A 10BC, a 5lb ABC is 3A 40BC.
If these can really match the performance of a 5lb extinguisher (typically 7-8lbs total weight) in a 1/2lb package that would be impressive and the price much less excessive.