Flashlight Kaboom
I like to do the occasional flashlight blogging. Via email, a TK Monster 15K lumen flashlight exploded. It took out a sliding glass door. Ouch.
13 Responses to “Flashlight Kaboom”
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February 19th, 2010 at 12:18 pm
lithium battery, right? normally they don’t explode, just burn very aggressively. I’m guess the flashlight was waterproof, and because it was sealed it allowed pressure to build up to the point of a real explosion.
February 19th, 2010 at 1:04 pm
Did you see the guy on that thread advocating government licensing of high-powered flashlights “Like a drivers license or a gun license” in order to prevent things like that from happening?
February 19th, 2010 at 4:07 pm
Li-Co batteries are all bloody dangerous.
They will do more than just burn if breached.
Lithium Iron Phosphate batteries are a bit bigger and heavier, but can be recharged more often, and don’t go splodie when improperly re-charged, or breached.
February 19th, 2010 at 4:13 pm
Massad Ayoob and John Farnam have addressed this recently. The culprit is supposed to be cheap, imported batteries.
February 19th, 2010 at 8:53 pm
Steve: All Li-Co batteries have this issue. Some just have thicker cases than others.
One of the stupid human tricks RC enthusiasts like to post in youtube includes deliberately overcharging an old Li-Co pack just to film it going splodie.
When the BMS/charger goes stupid, the batts die. Some die more spectacularly than others.
February 19th, 2010 at 10:01 pm
Holy Exploding Flash Lights Batman!
February 20th, 2010 at 1:01 am
But until it exploded it was really bright, right? 😛
February 20th, 2010 at 3:43 am
Was in Fry’s Electronics yesterday, and grabbed a 2-pack of those #123 Lithium batteries. Good price, only $3.99/pack. Just before I got to the registers, I noticed a little add-on sticker(very little) that said: “not for flashlight use”. Made in China, Sanyo or Sony brand? Read somewhere that the cheap 123 batteries don’t have the current-limiting components inside, so they can do a melt-down when used in high-draw items like tactical flashlights.
February 20th, 2010 at 3:07 pm
Li-Co? I think you mean Li-Po, as in lithium polymer.
anyway flashlight batteries are mostly Li-ion, which are a little less safe but can be discharged faster.
I used to use Li-po batteries a lot when I was into RC electric aircraft, the warning label always said the batteries could “vent with flames” if improperly charged or discharged.
February 20th, 2010 at 4:34 pm
Sam: One of my other bad habits is making electric bikes.
I know my batts. Li-Po refers to a whole bunch of different chemistries, including Li-Co, Li-Mn, and Li-Fe-PO4.
RC-ers end up using Li-Co because the watts/Kg ratio is extremely good.
I use Li-Fe-PO4 because they last through more cycles, can discharge more Amps at once, and don’t set the house on fire. They are a bit bigger and heavier, though.
February 20th, 2010 at 8:56 pm
Use Flashbang instead. 😀
February 23rd, 2010 at 9:24 pm
All I know about bomb is porn. LOL
February 25th, 2010 at 11:05 pm
boom boom pow!