How to extinguish a Li-ion battery fire

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Nope, 18650 and 26650 batts are lithium-ion. Much safer than lithium (energizer disposable) or lithium polymer (RC car/drone batts). I don't bother storing 18650's in a burn proof box, I keep them in a regular hard shell dry box.

I have accidentally pierced an 18650. Few sparks, little heat, no fire is what I experienced. It was not a big deal.

So it sounds like you are either saying that I am good or that I wasted money on an unnecessary bag.
 
Nope, 18650 and 26650 batts are lithium-ion. Much safer than lithium (energizer disposable) or lithium polymer (RC car/drone batts). I don't bother storing 18650's in a burn proof box, I keep them in a regular hard shell dry box.

I have accidentally pierced an 18650. Few sparks, little heat, no fire is what I experienced. It was not a big deal.
And lithium ion can catch fire too. Jeesh people. Just because they aren't "as bad" as metallic lithium batteries doesn't mean they don't have a ton of stored energy - enough to start a fire especially if over charged.
So it sounds like you are either saying that I am good or that I wasted money on an unnecessary bag.

Use the bag
 
So it sounds like you are either saying that I am good or that I wasted money on an unnecessary bag.
I'm saying you're good. Sorry that I wasn't clear up front.
 
Nope, 18650 and 26650 batts are lithium-ion. Much safer than lithium (energizer disposable) or lithium polymer (RC car/drone batts). I don't bother storing 18650's in a burn proof box, I keep them in a regular hard shell dry box.

I have accidentally pierced an 18650. Few sparks, little heat, no fire is what I experienced. It was not a big deal.

I've punctured a lipo battery (the kind in RC cars/drones) in a controlled environment just to see how bad it went out.
If there would have been anything remotely flammable nearby it would have caught fire, it combusted in a very undelicate matter.
Not tried 18650 batteries the same way, but as you say lithium-ion batteries are not as volatile as lithium-polymer ones.
 
https://www.shearwater.com/products/perdix-ai/

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