ITP A3 Eos EXPLODED!

[Apollo Cree]

"It blew the end cap off"

I didn't realize this light even had an end cap. Thought it was pretty much like a Maratac AAA, head and battery tube. Maybe it was a different light altogether.

Geoff

Perhaps he meant the "cap" on the front end, what we'd call the head. Or the lens, reflector, and electronics. The iTP A3 case is two pieces, the head and the battery tube. The battery tube is a one piece cup about the length of an AAA battery. The head is a one-piece tube.

 

[TorchBoy]

Maybe you wouldn't have recognized broken glass, the sound of a gunshot, shrapnel embedded in the skin and the other things he described before you joined this web site, but I think most of the rest of the human race would have no problem doing so.

That strikes me as being disingenuous. Egsise actually said he would recognise them, but in a different way to how a flashaholic would. I believe his point was that the person might not realise the full significance of what happened.

... And after reading his next post (73) it looks like I'm right in thinking that's what he was saying. It sounds like the poor guy it happened to would recognise the crack of a gunshot though.

Thanks for doing some pressure calculations. I don't see how you got the 7 pounds pressure figure though. A half inch diameter disk will have an area of about 0.2 square inches.

LightChaser, thanks to you too for posting your experience. It sounds like a well sealed light.

 

[Rexlion]

Yeah, I'm not really sure now if I understood correctly what he was saying. Maybe he wasn't referring to the tail end after all, or maybe the two halves separated at the threads. I'll have to ask him next time I get a chance. Whatever happened, it must've had considerable force to propel and embed glass into his hand.

 

[Apollo Cree]

Thanks for doing some pressure calculations. I don't see how you got the 7 pounds pressure figure though. A half inch diameter disk will have an area of about 0.2 square inches.

Simple. I did a spreadsheet and used the formula

Area=Pi*R



If you want to slavishly follow the crowd and use Area=Pi*R*R, then it's 2 lbs.

 

[TorchBoy]

LOL. The new result makes it clearer that the explosion wouldn't have been caused by natural pressure changes from altitude or heat.

 

[kaichu dento]

I emailed my friend and asked him to describe things in more detail. Here is his reply:

The glass lens, and the LED bulb, were imbedded in my hand, and also turned almost to powder, and was scattered on the table, and across my suit jacket. It blew the end cap off also, although it did not disfigure it, or the any other metal parts. It truly sounded like a gunshot. As for the battery, the only thing I remember about it was that it was not a brand I recognized, and I noticed that it almost looked new. There was no swelling, or corrosion on it. None of us can remember the brand though. Sorry.

He says this was the original battery that was in it when I gave it to him. I can't recall for certain (the light was given before Christmas) if the light comes with a battery or not. If not I really have no recollection what kind I might have put in there. We do sometimes have a few cheap offbrand Chinese cells around (my supplier sources all their electronic items in China and that's what comes in them), but I don't see any cheapo AAAs in my drawer now, only AAs. So I don't know. If I ever give another light, it will have Rayovacs or Evereadys in it, for sure. IF I ever give another light away... 🙁

I've received lights from other members here who without thinking about it had included rechargeables and unlikely as it seems, do you think there's any possibility you did the same?
Whether the answer is yes or no I'm still pretty awed by the whole story and like others, wish that he had saved it to show you what happened.

That is not an excuse, c'mon what kind of person throws away a flashlight that exploded?

Someone may think that when there's no proof this is just trollish thread?

Anyone not a member of this forum would most likely hurl the thing as far as they could!

Not sure why you suggested this thread as being trollish and you might want to be more cautious with that kind of insinuation. 🙂

Have you considered the impossibility of that? He could keep walking east or west, but not north or south. :kiss:

Lots of Alaska both north and south of the Arctic Circle. Just think about it, you've still hundreds of miles to Prudhoe after the Arctic Circle pullout! 😀

 

[Egsise]

Anyone not a member of this forum would most likely hurl the thing as far as they could!

Not sure why you suggested this thread as being trollish and you might want to be more cautious with that kind of insinuation. 🙂

In the land of the lawsuits and where battery companies replace broken devices, a battery operated flashlight explodes and the user just throws it away?
It just doesn't sound right.

At least the user should've thinked what if the next flashlight explode happens when someones kid is holding a flashlight in his/her hand?

Look ma, no fingers!

This kind of things need to be reported more accurately to prevent worse accidents.

(i don't live in alaska btw)

 

[kaichu dento]

Egsise, just because the whole doesn't share your cynical views does not even come close to justifying your insinuations that the OP is a troll, and I think it more likely that you are closer to fitting that suit.

 

[LeifUK]

Come on you lot, you are squabbling for no real reason.

From the description, there must have been significant force, and to blow out the LED means that the pressure/shock wave originated inside the battery canister. So it was not a stressed lamp glass. A pressure build up from a leaking battery sounds likely, and maybe little or no ignition. The absence of obvious damage to the battery suggests a slow leak, rather than an explosive venting. I keep a torch in my trouser pocket. :huh: Looking on the bright side, they do say that castration prevents hair loss ...

 

[McAllan]

In the land of the lawsuits and where battery companies replace broken devices, a battery operated flashlight explodes and the user just throws it away?

And then reload to get another "shot"?

 

[Egsise]

Someone may think that when there's no proof this is just trollish thread?

Egsise, just because the whole doesn't share your cynical views does not even come close to justifying your insinuations that the OP is a troll, and I think it more likely that you are closer to fitting that suit.

I did not say that the OP is a troll.
But you called me a troll, does that make you a troll?

Without any better proof this thread is full of speculation on what happened and we are not any wiser than before so why we even continue?

 

[kaichu dento]

I did not say that the OP is a troll.
But you called me a troll, does that make you a troll?

Without any better proof this thread is full of speculation on what happened and we are not any wiser than before so why we even continue?

The OP is the one who started what you called a trollish thread.

You now calling me a troll is pretty much akin to the pot calling the kettle black and looks like you actually are a troll, considering your behaviour of making ridiculous statements intended to inflame others and the trashing of a thread.

As you stated, no one is getting any wiser, so actually, why continue? Please drop it and let the conversation go back to the iTP A3.

 

[sabre7]

Unfortunately, this thread has degenerated into name calling over a subject that is hearsay from a 3rd party to begin with. Further, the vast majority of responses have nothing to do with the malfunction of the iTP A3 itself, but discussions about battery leaks and venting which might be better addressed in the battery section.

 

[glenda17]

As a chemical engineer I can tell you it doesn't take much battery acid to react with aluminum to create enough hydrogen to make an explosion with spark.

I never use alkalines in my flashlights, they are just mass produced junk. I swear at least 1 out of 100 leak. After I found AW Lithiums I never used another alkaline, they are a fantastic safe battery.

 

[Egsise]

The OP is the one who started what you called a trollish thread.

I did not say that this is a trollish thread, I said that someone might think that way.
I asked if you are a troll, you answer by twisting my words(again) and calling me a troll. :thinking:

Wise words sabre7.

 

[kaichu dento]

Pictures, or it did not happen.

That is not an excuse, c'mon what kind of person throws away a flashlight that exploded?
25$ flashlight is cheap, or is it?
Legal actions anyone, h@#!! yeah!
Someone may think that when there's no proof this is just trollish thread?

Yeah I know, living in another continent sure is nice.

Sorry for my comments, but there's just too much speculation on what happened without any proof.
The eyewitness is a non flashaholic, which I think can't accurately describe these things.

Yes you are right, he would recognice them in a non-flashaholic way which is not accurate because he does not know what to look for.

This is like a debate on what does a weather balloon look like.
It could be even a UFO to normal people, a specialist takes a glance and recognices it immediately as weather balloon.

Gunshot next to his ear and no any damage to his hearing? LOL!

In the land of the lawsuits and where battery companies replace broken devices, a battery operated flashlight explodes and the user just throws it away?
It just doesn't sound right.

At least the user should've thinked what if the next flashlight explode happens when someones kid is holding a flashlight in his/her hand?

Look ma, no fingers!

This kind of things need to be reported more accurately to prevent worse accidents.

(i don't live in alaska btw)

I did not say that this is a trollish thread, I said that someone might think that way.
I asked if you are a troll, you answer by twisting my words(again) and calling me a troll. :thinking:

Wise words sabre7.

Every post so far from you has had something antagonistic in it keeping the dialogue from being able to stay on course, even after Rexlion posted this one.

Maybe people do things differently around the Arctic Circle, for lack of good supply sources maybe, I don't know. But around here when people have something under $100 or so that stops working, they usually just throw it out.

Legal action? My friend was not seriously or permanently maimed, just had to pick some shards out of his hand (want me to photograph the marks on his palm for you? Will that make you feel validated?), so no point in spending big bucks on a lawyer to recover a few sawbucks at most. Being a gift it cost them nothing, and they would not have known where I bought it, so they had no thought of trying to get anything out of it like money or a new light. I know some people pinch every penny till Lincoln begs for mercy, but these friends aren't like that, I guess. Maybe that's part of why they're my friends.

Trollish thread? You're lucky you live so far away from me. Now turn around and keep walking north.

Not apparent how many others agree but it's obvious that at very least, both the OP and I agree that you've been posting in a disparaging manner.

 

[Monocrom]

As a chemical engineer I can tell you it doesn't take much battery acid to react with aluminum to create enough hydrogen to make an explosion with spark.

The OP mentioned that this particular iTP model was stainless steel.

Would the reaction have been similar with SS as with aluminum?

 

[Robocop]

Some people are attempting to keep this thread on topic and to them thank you for the efforts....to those who are simply trying to bait or stir up emotions consider yourself warned.

Regardless of the information the thread was posted properly for the members to discuss. If you do not agree then do not participate however adding your comments with no more than baiting words will not be tolerated.

Looking back on it Sabre7 it was you who added the first post of what I believe to be off topic and the of course Egsise you had to start the rude demand for photos.....then the bickering went from there.

Regardless of your intentions you can easily see now how off topic or simply out of line posts can degrade a thread to where it is no longer fun for the 99 percent of members who actually appreciate a discussion.

Simply knock it off and leave this thread alone if you have nothing positive to say. If you wish to reply to me feel free to do so by PM however further negative replies to myself or others will result in some time off for any involved.....last and only warning gentlemen.

Thank you again to those among us who are trying to keep this on topic and actually working together to discuss this like adults.

 

[march.brown]

Some people are attempting to keep this thread on topic and to them thank you for the efforts....to those who are simply trying to bait or stir up emotions consider yourself warned.

Regardless of the information the thread was posted properly for the members to discuss. If you do not agree then do not participate however adding your comments with no more than baiting words will not be tolerated.

Looking back on it Sabre7 it was you who added the first post of what I believe to be off topic and the of course Egsise you had to start the rude demand for photos.....then the bickering went from there.

Regardless of your intentions you can easily see now how off topic or simply out of line posts can degrade a thread to where it is no longer fun for the 99 percent of members who actually appreciate a discussion.

Simply knock it off and leave this thread alone if you have nothing positive to say. If you wish to reply to me feel free to do so by PM however further negative replies to myself or others will result in some time off for any involved.....last and only warning gentlemen.

Thank you again to those among us who are trying to keep this on topic and actually working together to discuss this like adults.

Well said, Robocop.

It's about time that someone stepped in ... I am interested in this thread because I have sent for the iTPA2 and may well go for an A3 too ...

Many Thanks for stepping in.
.

 

[flasherByNight]

gosh I wish this thread had a more satisfying conclusion :ironic: