Tampa woman injured by exploding 18650 cell

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ENAUD

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Except a break in the wrap has absolutely NOTHING to do with what I said.

You know what does? Checking the ohms of a pile of change. You know what I've done before? Checked the ohms of a pile of change and it is very low resistance so I certainly wouldn't ever recommend anyone carry a battery in a pocket with a pile of change. It just SEEMS like something that would take all the planets aligning just right to happen.
:facepalm::facepalm:
 

classwife

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sorry, this is a grossly misinformed conception, the anatomy of a lithium can battery leaves the negative terminal ( the entire body of the cell ) only a millimeter or two, from the positive terminal. a small tear or opening in a very thin plastic shrink wrapper, which could be initiated by any piece of metal with a sharp edge, think coin, pocket knife, thumb tack, DIAPER pin, whatever, could result in a short.
View attachment 752071
the above image shows just how close these two terminals are in proximity. It can happen in an instant. These are not designed to be consumer grade products...

images


images



This is what I think most people are missing when it comes to batteries.

I think people are thinking of a connection from the top of the battery to the bottom of the battery - but that isn't the case.

The whole body of the battery is the negative and it's a millimeter or so from the positive top.

All it take is something tiny to make a connection. A single coin would be enough.
 

classwife

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This is what I think most people are missing when it comes to batteries.

I think people are thinking of a connection from the top of the battery to the bottom of the battery - but that isn't the case.

The whole body of the battery is the negative and it's a millimeter or so from the positive top.

All it take is something tiny to make a connection. A single coin would be enough.


Gonna quote my post to add...


I think a SMART battery maker would make a battery with TRUE positive and negative ENDS.
Make the body with a plastic and have a positive and a negative terminal.
There is no reason this could not be done.
 

Jim_ MDP

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Curious what the real story is. Especially if they are 25R as shown by the store I can't imagine new ones going off for no reason in a case.
I can imagine there would be nothing left of the case to show.
This doesn't relate to the incident but... four of my 12 or so 25Rs (from one of our most trusted vendors) turn out to be clever rewraps of 5-7 Amp CDR 22Ps (still Sammys at least). It can happen and they get snuck into trusted sales channels, unfortunately.
They're now dedicated to my Convoy flashlights. :D

If in doubt (or do it anyway)... check Mooch's various verification notices (with pics).
 

BillW50

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Gonna quote my post to add...

I think a SMART battery maker would make a battery with TRUE positive and negative ENDS.
Make the body with a plastic and have a positive and a negative terminal.
There is no reason this could not be done.

Hmm... I read somewhere that there is a law or a standard that a lithium battery must hold back something like 450PSI before it blows. I have no idea how they came up with this figure. To me, that sounds way too high to be safe. But I have no idea of what normal pressures are either. So maybe that is practical for all I know.

Having the ends just metal and the sides just plastic or something, would need to hold back that pressure. To have that amount of pressure protected by plastic would probably mean the battery would be like the size of a AAA battery inside or something and have a capacity of something like 300mah. I dunno, I don't mind swapping batteries, but that would be too much for even me. The good news is that it should take no time to recharge. :)
 
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classwife

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Hmm... I read somewhere that there is a law or a standard that a lithium battery must hold back something like 450PSI before it blows. I have no idea how they came up with this figure. To me, that sounds way too high to be safe. But I have no idea of what normal pressures are either. So maybe that is practical for all I know.

Having the ends just metal and the sides just plastic or something, would need to hold back that pressure. To have that amount of pressure protected by plastic would probably mean the battery would be like the size of a AAA battery inside or something and have a capacity of something like 300mah. I dunno, I don't mind swapping batteries, but that would be too much for even me. The good news is that it should take no time to recharge. :)


Ok, so if that is so...then a material other than metal that would withstand that PSI.
Something so that the whole body isn't the negative.
 
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BillW50

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Ok, so if that is so...then a material other than metal that would withstand that PSI.
Something so that the whole body isn't the negative.

Well there is poly used to bag those lipo packs. How that thin stuff is suppose to hold over 450PSI I don't know. They would work, but swapping batteries in and out I would think they could rip or cut kind of easy (and that doesn't help what we have now). But maybe adding a thin plastic tube (thick enough to not cut or rip easily) over that would work well enough. But it is still going to cost you some battery capacity. Maybe like 5 to 10%. But thicker wraps would do the same thing right now if the mods could handle thicker cells.
 
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Baditude

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I think a SMART battery maker would make a battery with TRUE positive and negative ENDS.
Make the body with a plastic and have a positive and a negative terminal.
There is no reason this could not be done.
First of all, no manufacturers who are making the batteries that we use for vaping (18650 lithium ion) are making batteries for the consumer market. They are made solely to be used in battery packs controlled by BMS (battery management systems) for use exclusively in the auto or power tool industry. From the manufacturer's perspective, they do not need to drastically change the design of a battery to fit into open market because they are not meant to be used or sold in the open market. Those battery packs are not meant to be broken and the batteries "harvested" for other uses. As vapers, we "borrow" the technology from the auto and power tool industry, and using them against the wishes of those battery manufacturers.

I don't forsee a safer battery for vaping in the near future.

images
 

BillW50

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First of all, no manufacturers who are making the batteries that we use for vaping (18650 lithium ion) are making batteries for the consumer market...

Whoa... whoa... whoa! Mooch and I go round and round on this all of the time. I don't know why he doesn't get it yet (maybe he is too busy). As Aspire batteries are made at Yongdeli Battery Factory and Aspire owns a huge chunk of it. And so far I am convince they totally control how their batteries are made. And their biggest concern is that their batteries are not a danger to a vaper. They do tests that other battery manufactures like Sony and Samsung doesn't even do.

So far I have never found that any Aspire battery ever exploded. Maybe it has happened, but I don't know about it yet. But I know Samsung and Sony batteries have exploded before. I do trust Samsung and Sony and the like for the most part, but there is like one in a million that might explode.

But I will never buy there is no manufacture making batteries for the consumer market and especially for vaping. Because I see Aspire batteries targeted towards mostly for vapers. But here is where Mooch and I agree. Aspire batteries are not usually better than average performing. So you could get better performing batteries (I like Samsung and Sony myself), but I doubt if you could find a safer vaping battery. :)
 
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Myk

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Gonna quote my post to add...


I think a SMART battery maker would make a battery with TRUE positive and negative ENDS.
Make the body with a plastic and have a positive and a negative terminal.
There is no reason this could not be done.

I think it would get into liability to make them withstand the consumer market, some lawyer could claim they were encouraging end user use of unsafe batteries if they did. It would still be possible to short out the ends and go thermal.

So how about sturdier wraps to repel or withstand dings? Teflon wraps, Kevlar or carbon infused? That should be well within the realm of ability for some small start up ecig business.
But would these people who are exploding be willing to pay an extra dollar or two or would they go with what's cheapest?
I've never had a problem with batteries but I watch for things to be/go wrong. I don't really need that wrap but I probably would pay for it anyway. I'm thinking those who have the problems wouldn't.
 

Myk

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If anybody cares for a gander, I screenshot the damaged batteries from the video.

View attachment 752117

I don't know what to look for. Maybe someone else does.

The little bit of color looks green but I'm colorblind.
My sammies have a 3 pronged top, that's 4. My LG's have 4 pronged tops.
 

BillW50

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It not just about batteries for vaping.
It's about the batteries in general - regardless of what they are used for.

Yeah well I would agree. Although for vaping it would probably cause the most damage if a battery exploded out of other uses. Although one could burn down a house too, so that would be horrifying. But vaping I worry most about your eyes, mouth, and the rest of your face mostly. Yes I think manufactures could do a better job. But most don't think you are going to be vaping with them anyway and they just don't care about that. :(
 
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BillW50

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The little bit of color looks green but I'm colorblind.
My sammies have a 3 pronged top, that's 4. My LG's have 4 pronged tops.

For being color blind, you are very good. The one on the right has strong green in it. The one on the left might as well be B&W. And I just checked one of my blue Samsung 25R and one green and they are both three pronged tops. :)
 

ENAUD

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If anybody cares for a gander, I screenshot the damaged batteries from the video.

View attachment 752117

I don't know what to look for. Maybe someone else does.
Unfortunately, these catastrophic failures pretty much always melt away all or most of the insulating ring and wrapper. The charred remnants also cover the metal can so it would be almost Impossible to accurately tell what actually happened to that cell without close and thorough inspection.
 
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