Yes, probably better to leave it for a few days.
Any idea how this might have happened?
Yes, probably better to leave it for a few days.
Any idea how this might have happened?
While the rain won't help, either way it sounds like this cell will vent so there is really no harm.
The evil part of me says to try shooting it
DON’T do that though!!
No idea myself, I’m 100% positive I didn’t puncture it as I’ve perfected pulling laptop packs apart at this stage.
I took a pic (using a big zoom lens so wasn’t near the battery), the arrow points to where it was bubbling (shiny spot), I circled what looks like a dark discoloured patch that was on this cell and the adjoining cell when I removed them.
The four other cells are not discoloured like this and measure above 3.5v- on that note does anyone see any reason I shouldn’t use these cells that measure well?
Oh I have to say again thank you all soooooo much for the very quick replies :bigsmile:
Actually, the electrolyte solution in the cells isn’t that nasty. It is a flammable solvent, though. Once a cell is discharged to near zero, the chances of it having enough energy left in it to ignite the electrolyte is rather small. The salt-water douche is a good way to discharge the cell fairly slowly and safely. I prefer a, uhhh, more direct method. J)
@Texaspyro, I may be mistaken but I read somewhere that they can vent hydroflouric acid, or was that only for lithium primaries?
If there was HF in there, the shell and copper and aluminum electrodes would be dissolved. You might get some HF if the electrolyte torched off… would depend on the electrolyte.
I have a friend that tortures batteries for a living. He would be long dead by now if there was something really nasty going on.
Well of course it is not actually in the battery, but I know there were a few HF incidents on CPF due to vents.
Scaru, I believe it was a CR123 primary cell in the thread at CPF.
Here’s the thread: Inhaled vapors from battery!!! | Candle Power Flashlight Forum!!!
Edit: More info about HF:
I had a very scary situation last night. I want to post it here so that fellow CPF´rs will avoid it and the dangerous potential it has. I have been savoring of my soon to arrive SF M6. Knowing of the high current demand, I have been all over...
HF is produced at burning. No flames/smoke, no HF
Call the fire brigade.
They have specialist hazchem units who will let you know if it’s actually dangerous,
and how to safely dispose of it.
How the hell can a cell start to bubble? Are we sure its venting or just getting really hot?
I'd let it sit outside for a few days (dont throw it onto the lawn and run over it with a lawnmower though) and then try the saltwater method. If you have something like this, you should be really safe:
How the hell can a cell start to bubble?
Pressure differences pushing electrolyte out of a tiny leak in the seal/can.
Call the fire brigade.
They have specialist hazchem units who will let you know if it’s actually dangerous,
and how to safely dispose of it.
Could be expensive if emergency services later sends you a $1,000 bill for their visit. However, I suppose just calling them to ask for info should be free.
do not stick it into a snickers bar wrapper and do not put it in a candy store….
please do not i am begging you….
i really mean it……
Will try and resist doing that….
Thanks for the suggestions, both dodgy cells are currently now sitting under a 20kg solid conrete plant pot, will dump them into salt water in a few days time.
Good idea I might call the fire brigade and ask them where to dispose of them.
i suggest you do not get the government involved……
haz mat clean up is very expensive….
what if they did not allow you to take care of it yourself ???what if they went all swat team on you
about haz-mat batterieswhat if they have been up three nights in a row
and they freak out about bubbling batteries
and start hallucinating !!!i’m just sayin
Off to the snickers wrapper they go then
You could send it to the guy who posted on here yesterday about how to disassemble a li ion cell, he already cut the top off one, he is a graduate student or something.
You could send it to one of the members here who profess lithium-ions to be harmless…
+1 Very well Said.
Send it to me :P
I think if you tested it at zero voltage it's a door stop why does anyone freak out about a dead cell .unless he went back and edited his post .
It says he tested it at zero volts ..That doesn't scare me ..Should it ? check voltage and if it's dead or very dang dead ..Wrap them separately in little plastic tape them up and recycle them . killer gases comes from the batteries on fire not sitting there doa with no voltage . i ain't scared
If i saw a battery bubbling ... it might get my attention
if I'm wrong ....i'd like to know