Imalent        
Page 6 of 6 FirstFirst 123456
Results 151 to 171 of 171

Thread: Flashlight Explosion

  1. #151

    Default Re: Flashlight Explosion

    Quote Originally Posted by magellan View Post
    It takes about 2 weeks for the flu shots to take effect. If you are unlucky enough to get the flu right after getting the shot it won't protect you.
    More like I got the flu from the shot.
    "The World is insane. With tiny spots of sanity, here and there... Not the other way around!" - John Cleese.

  2. #152

    Default Re: Flashlight Explosion

    from:
    http://www.cdc.gov/flu/protect/keyfacts.htm

    Can I get seasonal flu even though I got a flu vaccine this year?

    Yes. There is still a possibility you could get the flu even if you got vaccinated. The ability of flu vaccine to protect a person depends on various factors, including the age and health status of the person being vaccinated, and also the similarity or “match” between the viruses used to make the vaccine and those circulating in the community. If the viruses in the vaccine and the influenza viruses circulating in the community are closely matched, vaccine effectiveness is higher. If they are not closely matched, vaccine effectiveness can be reduced.

    [...]
    Can the flu vaccine give me the flu?

    No, a flu vaccine cannot cause flu illness. Flu vaccines that are administered with a needle are currently made in two ways: the vaccine is made either with a) flu vaccine viruses that have been ‘inactivated’ and are therefore not infectious, or b) with no flu vaccine viruses at all (which is the case for recombinant influenza vaccine).
    [...]

    Can the vaccine provide protection even if the vaccine is not a "good" match?

    Yes, antibodies made in response to vaccination with one flu virus can sometimes provide protection against different but related viruses. A less than optimal match may result in reduced vaccine effectiveness against the virus that is different from what is in the vaccine, but it can still provide some protection against influenza illness.

  3. #153

    Default Re: Flashlight Explosion

    Quote Originally Posted by martinaee View Post
    If an 18650 went boom what gasses would be released compared to what happened to OP of this thread with cr123s? Similar thing? Completely different?

    I'm going to have to spend a lot more time in the battery threads of CPF.
    Quote Originally Posted by SilverFox View Post
    The HF is a problem with primary lithium cells. Rechargeable Li-Ion and Li-Po cells do not have this concern.
    This is unfortunately wrong. Fluoride compounds are used in most Li-Ion / Li-Po cells and you get hydrogen fluoride as combustion product.

    E.g.:
    LG ICR18650D1 MSDS:
    http://www.hp.com/hpinfo/globalcitiz..._us_eng_v2.pdf
    Samsung ICR18650 MSDS:
    http://support.radioshack.com/msds/msd25-2121b.pdf

    martinaee: Hydrogen fluoride is the really nasty stuff, you should be worried about.

  4. #154
    Flashaholic*
    Join Date
    Sep 2006
    Location
    Central America
    Posts
    1,059

    Default Re: Flashlight Explosion

    Wow, I just read through this, I am so sorry.

    I had a little incident myself a few years back after a perfectly good Sanyo 123 was dropped and started leaking. I was dumb enough to breathe deep from the vent holes in the positive sides. Silverfox and others provided very good support.

    The breathing difficulty came a few minutes later while sitting watching TV. Some here suggested my symptoms were psychosomatic and at the time I also considered if it was a panic attack. But then I realized it was all real as I wasnt even thinking about the incident when a very unusual breathing difficulty hit me. It was over quickly after a trip to the emergency room with no further issues thankfully.

    STAY AWAY from lithium battery vapors, and if "rapid disassembly accompanied by flame" Aka explosion takes pace, just get the hell out.

  5. #155
    Flashaholic
    Join Date
    Nov 2014
    Location
    Sabah, Malaysia
    Posts
    292

    Default Re: Flashlight Explosion

    I just read through the entire thread. Very unfortunate incident to have happened to the OP. I suppose there is no such thing as 100 percent safe. Even with branded batteries proven reliable and safe over the years, they are not accident proof, and things that can go wrong will go wrong, the only difference is how high the chances are I suppose.

    One thing I need to do after this is to get a DMM, since I'm planning to use 14500 and 10400 (although only as single cells).

    To the OP, I hope you are doing well enough now, I can understand the medical expenses as being a single breadwinner for my family of a still studying wife and 11 month baby, medical bills can get really expensive, even more so for conditions you went/going through that require on-going treatment. All the best to you and your family.

    Edit: I recall someone mentioning about ISO certification in products. Being the document controller for the ISO 9001:2008 (Documentation) for my company I can attest that 9001:2008 is only for the documentation of procedures. It is normally used for documenting of procedures and SOPs and adherence to said documents., and I doubt it relates much to actual quality of product (it can be used for quality improvement under the continuous improvement clause, but most companies, including mine, only go for the minimum in order to be certified). Long story short, like someone here also mentioned, being ISO certified doesn't guarantee quality.
    Last edited by xzel87; 12-10-2014 at 08:50 AM.

  6. #156
    Enlightened
    Join Date
    Dec 2008
    Location
    Windsor, CA
    Posts
    77

    Default Re: Flashlight Explosion

    I'm another one who just stumbled upon this thread. The OP JNieporte hasn't posted to this thread or on the site since Fall 2014. I hope he is doing well and is just caught up in life or some new, safe hobby like Skydiving - just kidding about the latter .

    As a owner of two Streamlight TRL-1S Weapon Lights that each utilize two CR123A cells, I am a bit concerned. More so because I have about 40 Panasonic CR123A's that I bought from a former Marine that just went past their expiration date in February of this year. I guess all I can do is check to be sure each battery's voltage to match them when replacing a pair. From what I've read, using RCR123's isn't a option with the TLR Series of lights?

    My Brother also has a Inova T2 that uses two CR123's - I sent them a message asking if RCR123's can be used or not but haven't heard back.
    Last edited by NorCalDave; 07-29-2016 at 12:13 AM.

  7. #157

    Default Re: Flashlight Explosion

    If your CR123s are expired, I'd recommend disposing of them in the proper manner. I don't think I've read a single account of an explosion, vent with flame, or any other mishap occurring with expired CR123s in the decade I've been on CPF. Then again, a community full of enthusiasts means that such cells rarely if ever come even close to their 10-years shelf life just sitting around. Still, I think of lithium batteries as having a pet dragon around. They can be docile. Even dependable. But you never forget their ability to belch toxic flames under certain circumstances. No reason to take chances with expired cells.
    "The World is insane. With tiny spots of sanity, here and there... Not the other way around!" - John Cleese.

  8. #158
    ven's Avatar
    Join Date
    Oct 2013
    Location
    Manchester UK
    Posts
    22,317

    Default Re: Flashlight Explosion

    Quote Originally Posted by Monocrom View Post
    I think of lithium batteries as having a pet dragon around. They can be docile. Even dependable. But you never forget their ability to belch toxic flames under certain circumstances. No reason to take chances with expired cells.





    He is just typing a reply to you now!



  9. #159

    Default Re: Flashlight Explosion

    I'm sure he's thanking me for the gourmet meals you'll be buying for him from now on, to keep him happy.
    "The World is insane. With tiny spots of sanity, here and there... Not the other way around!" - John Cleese.

  10. #160
    ven's Avatar
    Join Date
    Oct 2013
    Location
    Manchester UK
    Posts
    22,317

    Default Re: Flashlight Explosion


  11. #161
    Enlightened
    Join Date
    Dec 2008
    Location
    Windsor, CA
    Posts
    77

    Default Re: Flashlight Explosion

    Quote Originally Posted by Monocrom View Post
    If your CR123s are expired, I'd recommend disposing of them in the proper manner. I don't think I've read a single account of an explosion, vent with flame, or any other mishap occurring with expired CR123s in the decade I've been on CPF. Then again, a community full of enthusiasts means that such cells rarely if ever come even close to their 10-years shelf life just sitting around. Still, I think of lithium batteries as having a pet dragon around. They can be docile. Even dependable. But you never forget their ability to belch toxic flames under certain circumstances. No reason to take chances with expired cells.

    Thanks - wish I had found/read this thread before I bought all those cells. At least I'm only out .50 cents a cell.

    Do you guys have any recommendations on a decent quality but lower cost single CR123 LED flashlight to use those old cells up with?

  12. #162
    *Flashaholic* Illum's Avatar
    Join Date
    Apr 2006
    Location
    Central Florida, USA
    Posts
    13,055

    Default Re: Flashlight Explosion

    I use a ThorFire KL02. Its a single cell light with a diffused dome and a twist on/off operation. It has no switch and the LED is operated only by an SMT resistor. It is a battery crusher unfortunately so take care.

    I try not to use driver based lights in battery burners, because of the driver tries to maintain output it will pull more current as cell voltage sags. It could turn into a dangerous situation of the cells are old. With a resistor light, output gradually dims but then last a really long time. Of my 5 or so KL02s, two will turn itself on and one was a dud until I unscrewed the dome and reseated the PCB board. They are about $7+free shipping from amazon so I wasn't expecting much. They put out alot of light, and alot of glare, but hang it upside down in your shower stall or on a bookshelf and it puts out plenty of light.

  13. #163

    Default Re: Flashlight Explosion

    I like those CR123's from BattJunction. That 'double stacked' 2 pack seemed like a 'almost fool proof' way to use 2 CR123s safely.I was planning on giving a couple of those 2 packs with an O-Light S-2 as a gift because I though a 18650 LiON and charger was too complicated for a 'non'-flashaholic'. I will now use/keep those '2 packs' as an emergency power source only.

  14. #164
    Flashaholic shipwreck's Avatar
    Join Date
    Apr 2010
    Location
    Flashlight City
    Posts
    493

    Default Re: Flashlight Explosion

    After seeing this thread, back when it started, I totally switched to 18650s or 17670s. As someone a few posts up above posted - the TRL1 is one of the few lights that this won't work for, however.

    I have two TRL1s, and that is the only light I use primaries for. I do not know if two 16340s would exceed the voltage and fry the LED on a TRL1. Plus, 16340s don't last very long.

    But otherwise, I use rechargables. In fact - I just swapped out one light to a Fenix TK16 on one of my guns, from a TRL1.

    I have wondered what happened to the original poster since his last post
    Last edited by shipwreck; 08-23-2016 at 08:06 AM.
    Fenix TK16, TK16 - Eagletac P20C2 MKII, T20C2 MKII - Nightcore SRT6, SRT6, EC4S - Olight S20 Baton - Streamlight TRL1s, TRL1s - Inova XO3 - Solarforce L2P, L2, L2M & L2M

  15. #165
    Enlightened Smegheaaad's Avatar
    Join Date
    Aug 2016
    Location
    Honolulu, HI; a Brit abroad
    Posts
    49

    Default Re: Flashlight Explosion

    At the risk of looking like a stereotypical noob, this thread has always creeped me out. More specifically, hydrofluoric acid creeps me out.

    I took semiconductor classes at Uni, and the labs were some of the most interesting I've ever had. We did some very basic processing to create some of the most fundamental semiconductor structures (transistors, etc.) on Silicon, which involved the usual process; growing a silicon oxide layer, applying resist, photolithography, and then etching. After you have your pattern defined by a layer of resist, etching of the underlying SiO2 layer is done with hydrofluoric acid, and everything that was drummed into us about HF game me the willies. Undergrads never handled the concentrated stuff, but even the diluted stuff we used was very, very scary.

    Not only is it often immediately painless, but fluoride ions permate skin rather easily, and has an affinity for calcium, i.e. your bones. Worse, however, is the way that it also forms various soluble salts that not only end up in the bloodstream, but which eventually disassociate again resulting in more fluoride mayhem all over the place away from the initial exposure site. It really is unimaginably horrible stuff, and my skin used to crawl when I was anywhere near it.

    I know it's been stated already, but it's probably worth hammering home that all lithium ion batteries are an HF risk when they're opened. It's not just the primaries; rechargeables are also a risk, (albeit a low one with quality cells).

    If you look at the MSDS sheet for any battery from any manufacturer, they don't go into too much detail on a cell's composition; certain parts of the breakdown of ingredients by weight are often listed as confidential, as most don't want to give away any proprietary secrets on electrolytes, etc. However, they do invariably state that one possible side effect of an opened cell is a release of hydrogen fluoride, which becomes hydrofluoric acid in moisture.

    For example, Home Depot (of all places) has a copy of the MSDS for an older Samsung INR 18650. Page 2 gives a percentage breakdown of stuff by weight, and nothing in the datasheet looks particularly concerning, up until the head of page 4:

    HAZARDOUS DECOMPOSITION PRODUCTS
    None (during normal operating conditions). If cells are opened, hydrogen fluoride and carbon monoxide may be released.
    It really does make me wonder if most of the folks that open these cells up for youtube videos, etc. really know the risk they're taking...

    The other thing I've had stuck in my mind for well over a decade now is how differently LiIon cells are viewed. In a past life, I worked at Motorola PCS, and amongst the array of things I worked on, I was involved in the handset software that looked after battery charging on the GSM side of the business. When the transition to lithium ion occurred for mass-market products, the initial prevailing wisdom was that the cells were only really a risk when charging, and they were generally safe otherwise. As a result, the company put effort into the battery packs and handsets both to attempt to prevent charging counterfeit batteries and to allow the legal side of Mot. to go after counterfeiters (though the results weren't massively successful). It wasn't until later when there were millions of phones out in the wild that the first reports of venting and combustion started coming in. Thankfully, the vast majority of the cases I heard of were with 3rd-party batteries, many of which had either non-existent or ineffective safety circuitry in the battery pack. There were some Mot. batteries that went up, the majority of which were angered badly by being crushed, etc.

    Anyway, I've lurked for years, and this is one of the threads I always told myself I'd post to if I ever registered and it was still active. I know it's some 4 years late, but I've always been massively sorry to hear that you were hurt, JNieporte.

  16. #166
    Flashaholic see level's Avatar
    Join Date
    Mar 2016
    Location
    By the ocean under the volcano
    Posts
    261

    Default Re: Flashlight Explosion

    So, is this the same kind of fluoride that is put in everyone's drinking water?
    Quote Originally Posted by Smegheaaad View Post
    At the risk of looking like a stereotypical noob, this thread has always creeped me out. More specifically, hydrofluoric acid creeps me out.

    I took semiconductor classes at Uni, and the labs were some of the most interesting I've ever had. We did some very basic processing to create some of the most fundamental semiconductor structures (transistors, etc.) on Silicon, which involved the usual process; growing a silicon oxide layer, applying resist, photolithography, and then etching. After you have your pattern defined by a layer of resist, etching of the underlying SiO2 layer is done with hydrofluoric acid, and everything that was drummed into us about HF game me the willies. Undergrads never handled the concentrated stuff, but even the diluted stuff we used was very, very scary.

    Not only is it often immediately painless, but fluoride ions permate skin rather easily, and has an affinity for calcium, i.e. your bones. Worse, however, is the way that it also forms various soluble salts that not only end up in the bloodstream, but which eventually disassociate again resulting in more fluoride mayhem all over the place away from the initial exposure site. It really is unimaginably horrible stuff, and my skin used to crawl when I was anywhere near it.

    I know it's been stated already, but it's probably worth hammering home that all lithium ion batteries are an HF risk when they're opened. It's not just the primaries; rechargeables are also a risk, (albeit a low one with quality cells).

    If you look at the MSDS sheet for any battery from any manufacturer, they don't go into too much detail on a cell's composition; certain parts of the breakdown of ingredients by weight are often listed as confidential, as most don't want to give away any proprietary secrets on electrolytes, etc. However, they do invariably state that one possible side effect of an opened cell is a release of hydrogen fluoride, which becomes hydrofluoric acid in moisture.

    For example, Home Depot (of all places) has a copy of the MSDS for an older Samsung INR 18650. Page 2 gives a percentage breakdown of stuff by weight, and nothing in the datasheet looks particularly concerning, up until the head of page 4:


    It really does make me wonder if most of the folks that open these cells up for youtube videos, etc. really know the risk they're taking...

    The other thing I've had stuck in my mind for well over a decade now is how differently LiIon cells are viewed. In a past life, I worked at Motorola PCS, and amongst the array of things I worked on, I was involved in the handset software that looked after battery charging on the GSM side of the business. When the transition to lithium ion occurred for mass-market products, the initial prevailing wisdom was that the cells were only really a risk when charging, and they were generally safe otherwise. As a result, the company put effort into the battery packs and handsets both to attempt to prevent charging counterfeit batteries and to allow the legal side of Mot. to go after counterfeiters (though the results weren't massively successful). It wasn't until later when there were millions of phones out in the wild that the first reports of venting and combustion started coming in. Thankfully, the vast majority of the cases I heard of were with 3rd-party batteries, many of which had either non-existent or ineffective safety circuitry in the battery pack. There were some Mot. batteries that went up, the majority of which were angered badly by being crushed, etc.

    Anyway, I've lurked for years, and this is one of the threads I always told myself I'd post to if I ever registered and it was still active. I know it's some 4 years late, but I've always been massively sorry to hear that you were hurt, JNieporte.

  17. #167
    Flashaholic* degarb's Avatar
    Join Date
    Oct 2007
    Location
    Akron, Ohio
    Posts
    1,981

    Default Re: Flashlight Explosion

    Hmm.... Need HF acid to properly etch a tub, if ever you decide to epoxy (we urethane or polyester top coat). . Had HF which was a decade old, so mixed it with h2o and killed some grass with it. Probably 1996 for my last countertop and tub job. . Good job, then, was $400 in materials. . The cheap home kits yellow in a few months, in my experience.

    I have been using hydrochloric for rust removal for years, as phosphoric acid and ospho is slowwwwwwwe and hardly effective. . I found it is super easy to neutralize with sodium bicarbonate, then rinse, then leaf blow dry. Far cheaper and faster than sand blast. . Though I would never use on rust that goes through to back side of the metal, car under sides-surfaces which are too iffy on getting that bicarbonate into. . The metal will rot, if not neutralized. . But hydrochloric acid very effective stuff on rust.

    I think they gave us a lye neutralizer for our tub kits. . Need respirators when using acid. . I never had a problem neutralizing hydrochloric acid. . Nor neutralizing lye with vinegar. . Lye is indispensable in removing paint from painter clothing and brushes. . And as salvation army prices are rocketing I am planning to bring back the practice of lye soaking my paint clothing and a quick scrub before the wash. The danger is that the acids and bases are totally painless until it is too late. . Back in 1990 I learned the hard way, burned my knees with lye saving a few hundred dollars of paint overalls, by spending 20 minutes scrubbing them after soaking in lye. Learned importance of protection and neutralization, and how painless the damage occurs.
    Last edited by degarb; 10-20-2016 at 04:29 AM.

  18. #168

    Default Re: Flashlight Explosion

    I just read the entire thread, this ought to be mandatory reading for anyone using batteries. Very good source of "common sense" information. Thank you , OP, for sharing. Members as well for the priceless information.

  19. #169
    *Flashaholic* Illum's Avatar
    Join Date
    Apr 2006
    Location
    Central Florida, USA
    Posts
    13,055

    Default Re: Flashlight Explosion

    Quote Originally Posted by tsask View Post
    I like those CR123's from BattJunction. That 'double stacked' 2 pack seemed like a 'almost fool proof' way to use 2 CR123s safely.I was planning on giving a couple of those 2 packs with an O-Light S-2 as a gift because I though a 18650 LiON and charger was too complicated for a 'non'-flashaholic'. I will now use/keep those '2 packs' as an emergency power source only.

    I don't know if they changed it or not, but several cases of explosions documented on CPF concerns these battery sticks. As cells age they lose capacity and becomes unbalanced. In a high current light, the cell in the series with the least capacity depletes first and is then reverse charged from the surrounding ells. This causes the depleted cell to act like a volatile resistor. Years back user NewBie I think ran a series of controlled tests to demonstrate how a 2-cell stick that had a 40+% capacity difference can lead to an explosion.

    I make my own battery sticks, but once awhile I tear them down and test individual cells on the ZTS load tester. Over half of my "sticks" became unbalanced after it is drained halfway down. This occurs for streamlight, rayovac, and energizer. I was never able to attain a steady repeatable test pattern for early Duracells, so I never bought that brand.

  20. #170

    Default Re: Flashlight Explosion

    I have a ThruNite TN36. I bought and receive a ThruNite -MCC-4S Charger with four 3400 mAh 18650s. I charged the Batteries and installed them into my TN36. One of the Batteries did not snap in easily so I pushed a little harder. These Batteries would not work Correctly in my TN36. When I removed the Batteries, I noticed one of the Batteries had a portion of its cover scraped off the positive. I've used Flat Top Batteries in my TN36 with no issues. The Thrunite Batteries are not Flat-Top.

    I don't know if the problem is with the Batteries, or the Battery Cartridge or both. I plan on contacting ThruNite but have not yet done so. Should I not use the ThruNite Battery with part of its cover gone in fear of it exploding? I've never had this problem before with any of my ThruNite Products.

    I look forward to your thoughts. Thank you.

  21. #171
    Flashaholic* hiuintahs's Avatar
    Join Date
    Sep 2006
    Location
    Utah
    Posts
    1,840

    Default Re: Flashlight Explosion

    Probably need to use different batteries in the TN36 as you've noted. Meanwhile I'd rewrap the battery with the damaged wrapper. A little info on doing it:
    http://www.candlepowerforums.com/vb/...ping-a-battery

    You can get these on Ebay. They are not very much money. I'd probably stay away from the 72mm pre cut ones as I think they will be too short for a protected battery. Probably better to get a roll and cut to the length as needed. I use a heat gun but I think a hair dryer would work. Heat shrink needs to be 6 mm longer than the length of the battery so that they wrap 3mm around the ends.
    http://www.candlepowerforums.com/vb/...ow-retrofitted

Page 6 of 6 FirstFirst 123456

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •