YES I AM AWARE OF THAT!!!
So is the extinguisher I have stated above okay to purchase and cover the needs?
(no worries jeepin!)

it's an MA Phosphate dry chem, that's whats under my seat, i personally think they work a little better than CO2 because they help keep it from reigniting, very useful on grease/oil fires

not so useful on hidden compartment fires, the dry chem kinda goes where you point it

to fully answer your question, i'd say yes it's suitable for automotive purposes

i appolgize for sidestepping your question, but to be frank, dry chem and halon and halon replacements are really 2 different classes of extinguishers

halons also quite pricey!

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03 Renegade (Black)
177k miles 3.7L gas - 45RFE
Command Trac / 4.10s
Lift: ft. 790+ rr. JBA4+
The last of the TrailReady Front&Rear Bumpers and TR Rock Rails
Jarhead Offroad light covers
31x10.5R15 RedLetter Grabbers on Blackrock Dunes
L.O.S.T #KD098632

I got one today at Walmart for under $20 and mounted it!