li po fire
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RE: li po fire
Holy crap[:-]!
I'm gonna go looking for the lid to the container I'm using to do this.
I accidentally damaged a 3C lipo by dropping it. It started to behave like a 2 cell- it wouldn't charge beyond ~8.6 V. I tried to fool the situation by changing the settings on my charger (Triton) to think it was a 2 cell, and then switch to a 3 cell when I got the max, to see if it would take any more. Nothing came of this, fortunately, because of the built in safety features of the charger, but if I had the settings wrong things could have gone south just like that. Scarey...
Maybe it's time for a temp probe, and a surplus ammo case.
Thanks for the post. Reality sinks in!
T
I'm gonna go looking for the lid to the container I'm using to do this.
I accidentally damaged a 3C lipo by dropping it. It started to behave like a 2 cell- it wouldn't charge beyond ~8.6 V. I tried to fool the situation by changing the settings on my charger (Triton) to think it was a 2 cell, and then switch to a 3 cell when I got the max, to see if it would take any more. Nothing came of this, fortunately, because of the built in safety features of the charger, but if I had the settings wrong things could have gone south just like that. Scarey...
Maybe it's time for a temp probe, and a surplus ammo case.
Thanks for the post. Reality sinks in!
T
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RE: li po fire
Guys, something else of note....
When it was just sitting there expanding, the thing was already so hot you would have recieved severe burns if you touched it. I had one start expanding like that, and that puppy got BLISTERING hot. And it didnt explode.
I ended up having to yank it out of the plane by the wires. Because the battery itself was too hot to touch. It got so hot, it was melting the foam on the plane.
When it was just sitting there expanding, the thing was already so hot you would have recieved severe burns if you touched it. I had one start expanding like that, and that puppy got BLISTERING hot. And it didnt explode.
I ended up having to yank it out of the plane by the wires. Because the battery itself was too hot to touch. It got so hot, it was melting the foam on the plane.
#6
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RE: li po fire
ORIGINAL: edible_engine
i love that video! its great, though it does make me think when right this minute ive got my lipos charging at 3C upstairs....
i love that video! its great, though it does make me think when right this minute ive got my lipos charging at 3C upstairs....
Upstairs!!!!!!!!???????????
They should be -OUTSIDE-!!!!
on a concrete slab
With nothing flammable close by.
#7
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RE: li po fire
Yes I know all too well, except mine happened on a dork and my pack flew off and must have been punchered by the prop when it broke, instant flare, luckily it flew far enough from my plane that there was no other damage, just a 50 dollar pack with only 2 flights through it.
#8
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RE: li po fire
i love that video! its great, though it does make me think when right this minute ive got my lipos charging at 3C upstairs....
#9
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RE: li po fire
This is a serious question: How many people actually "attend" their batteries while charging? I've seen this warning not to "charge batteries unattended" on several sites. Do they really think people sit there watching their batteries charge?
If it's really important that you watch your batteries charge, I think the battery industry must be in denial, and really wanting to sell batteries, because it seems to me that very few people sit around watching batteries charge.
If it's really important that you watch your batteries charge, I think the battery industry must be in denial, and really wanting to sell batteries, because it seems to me that very few people sit around watching batteries charge.
#11
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RE: li po fire
Um ... OK ... I'm a believer now!!
I think the bouncing-flamethrower action adds a certain je ne sais quois ... as do the mirage ripples of heat around the thing, even before the cover starts to tear.
"Charge over concrete, fly over grass" sounds like a good motto for these things.
Duane Gall
RCPRO
I think the bouncing-flamethrower action adds a certain je ne sais quois ... as do the mirage ripples of heat around the thing, even before the cover starts to tear.
"Charge over concrete, fly over grass" sounds like a good motto for these things.
Duane Gall
RCPRO
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RE: li po fire
ORIGINAL: schroedm
Just how long are your packs lasting with you charging them at 3C - you've gotta be knackering them pretty quick!! [&:] [X(]
i love that video! its great, though it does make me think when right this minute ive got my lipos charging at 3C upstairs....
And no, i never look over my packs apart from the first 2 mins or so incase my charger goes wrong and doesnt stop at 1A and keeps on increasing.
Am i mad?
Ian
#13
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RE: li po fire
OK, now here's a followup question.
My basement has window wells with gravel at the bottom and an iron grate over the top. I've used them as a spray booth and as temporary storage for toxic trash, like paper towels I've used to clean up paint or lacquer thinner. Access is easy by taking out the window screens and sliding the window open.
Seems like this would be a good place to charge and store the LiPos, but of course it's not heated. Do LiPos care how cold they get? Will they freeze?
Thx
Duane
My basement has window wells with gravel at the bottom and an iron grate over the top. I've used them as a spray booth and as temporary storage for toxic trash, like paper towels I've used to clean up paint or lacquer thinner. Access is easy by taking out the window screens and sliding the window open.
Seems like this would be a good place to charge and store the LiPos, but of course it's not heated. Do LiPos care how cold they get? Will they freeze?
Thx
Duane
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RE: li po fire
Lipos normally perform best when warmer. Cold tends to make them...well....pfffffft.
The best option, and the one that most of us use is a simple old army metal ammo can. That seems to be the going thing.
Here are a couple of other options.
Take those square concrete stepping stones like they have at walmart and build a box out of them. Use a little quikcrete to "glue" them together. Then just put the batteries inside and put a stone on top. Not much is going to get through 2" of concrete.
Look up "BATTERY BUNKER" online. Many people sware by these things, Its a ceramic heatsheild bucket thing.
The best option, and the one that most of us use is a simple old army metal ammo can. That seems to be the going thing.
Here are a couple of other options.
Take those square concrete stepping stones like they have at walmart and build a box out of them. Use a little quikcrete to "glue" them together. Then just put the batteries inside and put a stone on top. Not much is going to get through 2" of concrete.
Look up "BATTERY BUNKER" online. Many people sware by these things, Its a ceramic heatsheild bucket thing.
#17
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RE: li po fire
I use LiPo's all the time, so far so good. I have seen videos like this before. I have taken it upon myself to buy chargers that charge just LiPo batteries. Its to easy for a charger that charges all batteries to be set on the wrong setting. I beleave they shouldn't sell chargers that charge ALL types of batteries, just a personal opinion that would help people from burning down there airplane trailer or even worse there garage or house. I usually charge mine in a heavy glass mixing bowl set away from everything when I charge them in the house. This is not fire proof but it sure would help if something went wrong. The batteries are always going to be around, the foamies could not fly without them. People just need to go the extra mile in safety if they are going to play with LiPo's.
#18
RE: li po fire
WOW!!!!!! I never had seen a video like that before I knew they could do that but never seen it.I love lipos tho there great stuff you just have to be careful and pay attetion to what yoru doing dont be chrging a 3 cell and making the chrger think it a 2 cell or the other way around.you dont have to watch them the whole time just check on them and make sure they do start chrging corectly i dont think anyone takes them outside!!!!!!To charge there batteries...
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RE: li po fire
Oh man[X(]-
Somehow my Lipo's always end up charging next to a gallon of nitro fuel--BAD IDEA.
At least with me being a piro i can get some sort of sick pleasure out of an explosion
Somehow my Lipo's always end up charging next to a gallon of nitro fuel--BAD IDEA.
At least with me being a piro i can get some sort of sick pleasure out of an explosion
#20
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RE: li po fire
Guys,
LiPo's can be dangerous if you don't use care. I use a couple of things to charge mine (in the garage).
1) Use a good charger that will charge LiPos
2) Use a charger that has a temperature gauge that will cut off at a set temperature. I set mine at 85 degrees. My batteries when charging at the correct rate should never get warmer than 85.
3) Use a container like a Pyrex dish or a good kiln fired flower pot to place them in
4) WHEN CHARGING WATCH THEM AND STAY IN THE ROOM.
I usually watch them or I am in the same room. I am getting ready to build a little rig that will have a smoke detector on the top.
LiPos are safe if used and charged correctly. Like anything, in the wrong hands or using the wrong charger, or just plan being stupid will get you in trouble. As someone said, my little crappy foamy would not be fun without my 3cell LiPo.
Lee
LiPo's can be dangerous if you don't use care. I use a couple of things to charge mine (in the garage).
1) Use a good charger that will charge LiPos
2) Use a charger that has a temperature gauge that will cut off at a set temperature. I set mine at 85 degrees. My batteries when charging at the correct rate should never get warmer than 85.
3) Use a container like a Pyrex dish or a good kiln fired flower pot to place them in
4) WHEN CHARGING WATCH THEM AND STAY IN THE ROOM.
I usually watch them or I am in the same room. I am getting ready to build a little rig that will have a smoke detector on the top.
LiPos are safe if used and charged correctly. Like anything, in the wrong hands or using the wrong charger, or just plan being stupid will get you in trouble. As someone said, my little crappy foamy would not be fun without my 3cell LiPo.
Lee
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RE: li po fire
ORIGINAL: DrDeath
I usually watch them or I am in the same room.
I usually watch them or I am in the same room.
#23
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RE: li po fire
"Only charge in the garage or outside" and "never allow to charge unattended" seem mutually exclusive, especially for us busy Americans who have important TV to watch. How about "charge in a fire-safe enclosure, and check on it periodically but don't leave the house"?
A 1C rate takes about an hour ... "Desperate Housewives" takes about an hour ... Coincidence? I think not.
A 1C rate takes about an hour ... "Desperate Housewives" takes about an hour ... Coincidence? I think not.
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RE: li po fire
Does this mean that we need to watch our cell phone charge also LOL
My charger is for 3 cells only and all I use is 3 cell batteries and metal box for safety, and yes I do keep an eye on them.
My charger is for 3 cells only and all I use is 3 cell batteries and metal box for safety, and yes I do keep an eye on them.