Micro household fire extinguisher, small car battery fire extinguishing device, small distribution cabinet fire extinguishing device, outdoor power supply fire extinguishing device

I will preface in saying I used to be a professional firefighter for a large department in the Washington DC area. That doesn't qualify me to speak intelligently about this item, but I did ask several former coworkers about their opinion of these and they thought they were a great idea...asked for the link.I will say the instructions state "electronic initiator valid for 10 years", and there is a 'made on' date of 6/21/2024 on all 4 that I purchased on 3/30/2025. Item is a very solid steel construction, no defects no lazy crimps, no defects in the punches or paint. Uses 3M VHB tape on the bottom...so cursory look indicates quality materials and good but simple workmanship. I can see a smaller "puck" inside and two insulated wires that appear to be about 14 gauge. Have not tested, but bought multiple so I can take one apart to see what is inside. I intend to use these inside a metal storage cabinet that stores multiple solvents. Sticking one or two onto the underside of each shelf should be sufficient. Their effectiveness will be exponentially increased if the cabinet stays closed and is relatively airtight.Bottom Line: yes, highly recommended. For $30-$40, the peace of mind should be worth it even if they inventively fail to completely extinguish suppress a blaze. I imagine they will at least buy time in a situation where stored items in a cabinet catch on fire or a charging battery overheats....the smoke detector should go off and the open flames will at least be beaten back a bit.

Was easy to install, set and forget it. Did not bother to test it, but trusting this will handle business when it does come.

I build battery packs out of EV batteries and others. These were the closest “U.S” based (by that I mean easily found and purchased in the U.S.). I found the exact one that some big battery makers put in their boxes but the company only sells wholesale and I don’t need 10,000 of these.So I have placed one of these in one of my boxes and plan to add more to other packs I built. No where did I see these work specifically on Lithium Iron Phosphate or Lithium ion battery fires but I figured if things go horribly wrong it’s a line of defense of which there are many. I’m not willing to sacrifice my lithium batteries to intentionally start a fire to see what these things do or don’t do. Maybe the seller could answer the question about what batteries they work on and if you really want to boost you sales making a video proving it! We buy with trust. Trust in a very situation. Showing off “it works” goes a long way in boosting confidence. I don’t know if I have a $20 circular paperweight or a fire suppression device.I may have found an Indian company that makes them for large companies (EK4) that sounds they are open to smaller sales and not bulk. We will see. Hopefully never find out. Maybe one day I’ll get a battery that starts to go south and I will controlled destroy it and see what one of these pucks can do.

Honestly, I’m mostly writing this because Amazon promised me a joke if I did. This is a hard review to do, mostly because nothing has burst into flames like a few months ago when I went on my lunch break and walked outside to find the van I live in on fire.It sounds more dramatic than it was. It wasn’t a big fire I guess. But big enough for me to stock up on extinguishers and stick two of these automatic ones to my walls—super easy to do, by the way. They do bring me some peace of mind as well.I should probably explain the van fire before I go. Well, you see, I got into the routine of charging my “house” batteries in my work’s parking lot via the outdoor outlet I “discovered” one day (oh like you wouldn’t pirate your electric bill from your place of employment if you could move your house there, do not judge me.)The fire put an end to that though because lol could you imagine the embarrassment of burning down both your home and your workplace at the same time while on the clock?Total yikes.That reminds me—I should go review that battery charger next.

Fits well in my 3D printer enclosure. I can't really review its effectiveness unless the worst happens, but the size is good and it isn't incorrectly triggering at heated chamber temps (which it's not supposed to) of around 60C, so that part is good. I feel better having it there even if it just buys me a few minutes should the worst happen.

I figured this was the size of a hockey puck, but this is closer to the size of a US Half Dollar Coin in diameter and about 3/4ths of an inch thick. Easy to install, comes with 3M adhesive back.

Way too small for application. It doesn’t give you the size of the unit or the chemical that extinguishes the fire.

Good for lithium battery compartment.