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Just got my batts out yesterday, and noticed one was a bit bigger than the others :o

Came across this, one cell has puffed up, and somehow hasn't gone boom. Lucky, as it is stored in my bedroom, in it's original box, next to my bed!

God only knows what would've happned if it had decided to go up properly. It wasn't stored flat, and was kept at room temp. It was in its box with nothing else so couldn't have shorted, nor got wet.

I guess these things just happen. The important thing to remember is that we use lipo sacks for a reason! I have now gone and put my remaining lipo's in my charge sack, and sealed it when storing them.

Quite frankly this has scared the sh1t out of me now, and I would urge everyone to just have a think about how their packs are stored and what would happen in a worst case scenario.
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HERBAL VAPORIZERS

how long since you put it away has that happened?

Holy crap, i dont have a charging sack didnt even know what one as lol.

Ill have to go get one when I get a free moment, whats the safest way to store my lipo batt till then?

Just bang some insulation tape around it and it'll be good to go again:woot:. On a serious note tho, one day a lipo will go bang and cause injury to someone then i wonder what action would be taken. Might be worth a claim from the no win no fee gang.

I heard they have self extinguishing properties - how effective this is I don't know, its to prevent fireballs. And when they do this they expand and go to zero voltage.... Early Lipo's didn't have this, when i say early, I mean 6am.... no I really mean 6-12 months or so BEFORE the BRCA allowed them into nationals.

Just to set your mind at ease...

http://www.bbc.co.uk/news/world-us-canada-11505505

;)

I think the company would argue that the product has been misused therefore the injured party would be the "author of his/her own misfortune".

I agree with your point, but i bet 95% of the time these batteries are being treated with the upmost respect.

Crossing the road ia danjerous .......


Now you claim could be true but..... you have had no fire and no injury.


I would have said the pack look lile its been low discharged. Which has caused swelling. When pack swell you don't nesacerally get fire when its low currents.

Two questions

What state of charge do you store them at.
Do you balance charge them.

I never balance charge my Lipo's

Go
 

Always balance charge, and generally store them between 70-90% ish.

I am going to shoot it tonight with my airgun in the name of science. Just to see what happens.
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Honda Shadow 600 specifications

please video this!!

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already there my friend....... :D
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Ferrari 360 Specifications

top banana :thumbsup: not that I endorse such dangerous and reckless behaviour.... just make sure we get good flames!!

Spooky Lloyd, i had one swell up on Sunday at Worksop??

Lloyd could it be that they are old and foooked?

The title of this thread should be, "BATTERIES are dangerous."

Inherently, all batteries are vessels for storing electric energy and are by nature VERY DANGEROUS. Too many people overlook this fact of racing and playing with electric powered cars, boats, helicopters and airplanes.


The simple truth is that NiMh and NiCd have always been and are still just as dangerous to own, store, charge and use as Lithium Polymer type packs. Ever see a NiMh cell EXPLODE or shoot across the pits and lodge into a wall, table or worse?





I am still amazed when people spontaneously realize that stored electricity is dangerous, in any format. Take care of your batteries, store them properly (according to the manufacturer's suggestions) and treat them with the respect they deserve.

LiPos are not any more or less dangerous than the batteries under the hood of your car, in your cell phone or in your laptop. They just pose different risks and require different maintenance. They are certainly not any more dangerous than the batteries we have been using in R/C cars for the last 30 years.

Agreed, it's way to easy to take batteries for granted. I blew up a set of Sanyo cells years back (the old non-vented red ones) by shorting them out in a battery box by accident.

Just recently we had a NiMH pack explode in a guys starter box at a Nitro race. Switched the box on, big bang and smell of burning. Fortunately the metal starter box contained the shrapnel, but he did need new keks afterwards:woot:

I've seen a LiPo go up at a race meeting - it's not funny at all. In fact, the speed in which the fire took was truly a wake up call to everyone that was there.

It is true to say that all batteries (in fact all stored energy) have some form of danger attached to them. However, generally speaking, with a NiMh, you get an explosion. Nnot nice, but once it's done, it's done. With LiPo, you get fire, that continues until someone puts it out - and the smell afterwards is nothing short of horrific.

I don't mean to make everyone too scared to use their kit, but you do have to be careful.

we had two go up in the east mids this year due to being punctured . nothing left ot the cell or casing afterwards