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HomeAircraftHelicopterHelicopter Main Discussion › Puffed Lipo / To keep or not to keep...
04-25-2011 03:38 AM  7 years agoPost 21
Stephen Born

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USA

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MartyH,

I hear the batteries can get as high as 2000 degrees. While driving from the field to my house, the battery puffed much, much more on my passenger floorboard. Sickening feeling.

hootowl,

They had those back then...

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04-25-2011 03:55 AM  7 years agoPost 22
hootowl

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Garnet Valley, Pa.

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And smudge pots.

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04-25-2011 04:04 AM  7 years agoPost 23
AltecLansing

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North Carolina

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Two conflicting things I found through a google search.

http://searchwarp.com/swa639088-5-B...r-Batteries.htm

Basically it says they don't contain anything that will release harmful fumes.

http://www.atomicmods.com/Categorie...-Batteries.aspx

Scroll to the bottom and it says that it does release harmful fumes. Hard to believe everything you read on the internet, but it has peaked my curiosity. I've always heard that lipos were biodegradable and that's why they can go in land fills.

The top link does say that lipos are safer than other batteries, but I do find that hard to believe. Maybe I'll find a manufacturer and ask what the fumes contain, if they are harmful, and how resistant they are to bursting into flames when being damaged like being run over by a car.

Man, I miss the eighties.

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04-25-2011 04:05 AM  7 years agoPost 24
hootowl

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Garnet Valley, Pa.

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Great with a little mustard.

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04-25-2011 04:11 AM  7 years agoPost 25
AltecLansing

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North Carolina

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http://www.ehow.com/list_6930831_di...-batteries.html

another one that says these batteries can't go into landfills.

Man, I miss the eighties.

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04-25-2011 04:13 AM  7 years agoPost 26
FloridaHeli

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jacksonville, florida

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Actually I have removed the swollen cell(s) and replaced them with good cells from another battery. I've also made a 4 cell out of a 6s by removing the 2 swollen cells. Of course I had to rewire the balance connector but that was easy. The difficult part is cutting the wrapping off the battery. You must use a very sharp blade. If you so much as nic a cell foil then that cell is dead; remove it. I'm flying with one 6s 5000mAh Turnigy that is what is left from 2 batteries that had swollen cells. Been using it for 2 months now. Still rivals my newer Turnigies in flight power and available amperage.

You can get new shrink wrap for the rebuilt battery from CommonsenceRC.com and/or CheapBatteryPacks.com.

Good luck and save those batteries.

This hobby is WAY too expensive!!

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04-25-2011 04:13 AM  7 years agoPost 27
Stephen Born

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USA

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Thanks for the info AltecLansing.

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04-25-2011 04:15 AM  7 years agoPost 28
hootowl

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Garnet Valley, Pa.

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The Materials Safety Data Sheet for lithium batteries states that the contents of the batteries can cause skin and respiratory system irritation, as well as burns.
Oh my. Don the space suits.

Seriously, I think the new compact fluorescent bulbs being practically made mandatory by the US GOV are more of a danger in the landfill then these things.

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04-25-2011 10:30 AM  7 years agoPost 29
jackheli

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Vancouver - Canada

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I am pretty positive that at least the plastic/aluminum wrapping is not landfill friendly. Do not know about the guts of lipos, but would doubt that they are harmless to the environment. Wishful thinking.

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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04-25-2011 10:53 AM  7 years agoPost 30
Mike0251

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Hills of the Blue Ridge VA

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We used to run behind the insect fogger when they went down the street. You ain't telling us nothin
Oh my gawd hootowl I did this too, 50 years ago, Loring Air Force Base Maine when I was in 2nd grade!!! That is some funny stuff.
I take them out to my burn pile and put a .22 thru them, leave em there for a couple of weeks, wrap em up and throw them away. We have an environmentally friendly landfill, they take everything and anything and run over it a gazillion times...lol.

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04-25-2011 11:21 AM  7 years agoPost 31
dizzymarkus

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Oswego, NY

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yupper == we have a burn barrel at the field -- if I get a bad one we put it in there and poke it -- only good way IMO to dispose of it -- now I know it aint gonna hurt anyone ;0)

Markus

I reject your reality and substitute my own :0)

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04-25-2011 01:19 PM  7 years agoPost 32
Jeff polisena

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westpalmbeachflorida usa

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Don't take any chances , it's not worth it , Jeff P

I stole it ,flew it and gave it back ;)

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04-25-2011 06:37 PM  7 years agoPost 33
helitom

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Pine Grove, Calif, USA

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Now for some absolutely unscientific information. Our club field is way out in the sticks so one of the typical entertainment breaks is to shoot old Lipo packs with a 22 to see what happens. We have done this to about 30 packs. The battery pack is always charged up prior to execution. The results are pretty consistent. Packs that are not puffed up, when shot, will do everything between nothing and smoke a lot. Sometimes the pack will lay there for a long period of time with no reaction and THEN start smoking.

Packs that are puffed up will go up in a large, intense fireball when shot.

What does this mean?
No. 1 - It's easy to separate out who can shoot from those who can't...
No. 2 - I no longer keep puffed packs for any reason whatever. They are dangerous.
No. 3 - If you have lots of electric flyers and therefore lots of battery packs, storage represents a big problem, especially you hang on to packs until they are absolutely useless. Most people have far more batteries than they do storage containers. When you store 4-5-6 packs in a single container, that's right next to having a bomb in your workshop. When one goes up, everything in the container goes up. You will be very lucky if you only get the "lotsa smoke" reaction when a whole container goes up. I use vented ammo boxes and flower pots with a drip dish large enough to cover the top of the pot for storage. I use the Lipo sacks only to transport packs to and from the field. I don't believe the cheapo gray Lipo sacks from Ebay or other Chinese suppliers would contain a runaway Zippo lighter. After seeing
the violence of the fireball explosion from our target practice, I doubt any of these storage systems would contain the energy of a massive failure of several packs going up.

The older I get, the fewer things seem worth waiting in line for.

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04-25-2011 07:24 PM  7 years agoPost 34
Rogman88

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West Monroe, LA

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What is the best way to neutrize this
Urine has all the electrolytes needed to conduct effectively, just make sure it's not coming from your body when you use it as a conduction force.

Or you could try to take the bad cell off and reuse the battery like I did. Here is the result.

I wished I'd have just pee'd on it instead...

High Voltage just works better

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04-25-2011 07:47 PM  7 years agoPost 35
hootowl

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Garnet Valley, Pa.

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You are a threat to the environment

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04-26-2011 12:17 AM  7 years agoPost 36
willanyone1

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Griffith, IN U.S.

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man now i really cant wait to shoot them.

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04-26-2011 01:09 AM  7 years agoPost 37
Mike0251

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Hills of the Blue Ridge VA

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Mine do nothing more than smoke after shooting them..lol.

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04-26-2011 02:17 AM  7 years agoPost 38
Stephen Born

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USA

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Rogman88 / Jeff polisena

When they told me to keep the battery and take it home, you guys were the first to pop in my head. Rogman88 pictures posted a while back, and Jeff's story a couple of weeks ago. I should have known better. I fly at a field with the average age of 100. These guys are MAJOR old school and I am sure cutting corners is a hobby all in itself.

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04-26-2011 02:41 AM  7 years agoPost 39
Newbe Guy

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Phoenix, AZ

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oh boy. could you imagine that? Some 100 year old guy putting lipos together! haha... oh man.

Blade mSR / Trex 450se V2 - AMA#965156

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04-26-2011 03:08 AM  7 years agoPost 40
Rogman88

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West Monroe, LA

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Old farts are used to ni-cads and the new nickel metal hydride batteries. Those just quit working when they go bad. They usually don't try to burn your house down.

High Voltage just works better

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