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So, I bought one of those fire proof LiPo bags...

Old 10-27-2010, 03:09 PM
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Gweedz
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Default So, I bought one of those fire proof LiPo bags...

I don't even have LiPos (yet).

Do they really work (or did Ijust blow a whole 3 bucks)?

Won't the batteries overheat in there while charging? Or give a false reading if monitoring temp?

Any reason to use with NiMH?

Will it keep my meataball sangawich warm until lunchtime?
Old 10-27-2010, 03:24 PM
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dug44
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Default RE: So, I bought one of those fire proof LiPo bags...

They are just meant to smuther the fire, if they happen to actually catch on fire... I never charge a lipo unless I am sitting there anyway. That would be your best bet... I use mine for storage and transporting.
Old 10-27-2010, 03:39 PM
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Default RE: So, I bought one of those fire proof LiPo bags...

i have seen a video where the lipo back cought fire. but, compared to what it looks like without being inside a bag, its much better.
basically these bags will give you more time to put the fire out, and cause less damage to surrounding stuff.
i know many people charge inside a metal box with the lipo in the bag. bag+metal box will make things pretty safe.

i have been using lipos for over 2 years now. havent had a lipo catch fire yet, while charging or otherwise! and its not like i buy high-end stuff either. most of my lipos came from hong kong.
Old 10-27-2010, 03:40 PM
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Default RE: So, I bought one of those fire proof LiPo bags...

I have a kitchen in my basement - so I plan on charging them in the oven with the door closed. Can't afford to waste 1hr per battery just watching them charge.
Old 10-27-2010, 03:46 PM
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HJJFFFAA
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Default RE: So, I bought one of those fire proof LiPo bags...


ORIGINAL: nitrosportsandrunner
basically these bags will give you more time to put the fire out
I don't think the average homeowner would have the materials available to do that.
Old 10-27-2010, 03:54 PM
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Gweedz
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Default RE: So, I bought one of those fire proof LiPo bags...

What materials are required? An ABC extinguisher won't work?
Old 10-27-2010, 03:57 PM
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ScottStaypuff
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Default RE: So, I bought one of those fire proof LiPo bags...

I put all my batteries in lipo sacks then in a big clay flower pot. Hopefully that will do it if one ever lets go.
Old 10-27-2010, 04:17 PM
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Brainanator
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Default RE: So, I bought one of those fire proof LiPo bags...

lipos shouldn't get warm while charging, so heat won't be an issue.
You could charge NiMHs in there I guess....might get a little too warm too early maybe.....I've read some (I'm sure) controversial things about NiMH charging pertaining to heat, but I won't even mention them unless I can find where I read it. (try not to turn the thread into a "I know more than you, you're wrong" thread).

I've seen a video of fire blowing right through the cheap HK lipo sacks. Pretty sure I can find that one....

http://www.youtube.com/watch?v=kENxy73h-w0

I still use them though....probably would have been worse without the bag, and for a couple bucks I might as well.

edit: of course that vid was made by someone trying to sell an alternative to lipo bags, so take that however you want.
Old 10-27-2010, 04:18 PM
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ThunderbirdJunkie
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Default RE: So, I bought one of those fire proof LiPo bags...

ThunderbirdJunkie stores his lipos in a stack on top of the box of printer paper on top of his wooden table that sits between his two wooden desks.
Old 10-27-2010, 04:25 PM
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Default RE: So, I bought one of those fire proof LiPo bags...


ORIGINAL: nitrosportsandrunner

i have seen a video where the lipo back cought fire. but, compared to what it looks like without being inside a bag, its much better.
basically these bags will give you more time to put the fire out, and cause less damage to surrounding stuff.
i know many people charge inside a metal box with the lipo in the bag. bag+metal box will make things pretty safe.

i have been using lipos for over 2 years now. havent had a lipo catch fire yet, while charging or otherwise! and its not like i buy high-end stuff either. most of my lipos came from hong kong.
What I do lipos in bag in army ammo can

to put out a lipo fire you need a extinguisher rated for a chemical fire, or sand would work

One user here from what I remember puts his between 2 bags of sand in a ammo can so if the lipo starts to catch it melts the bag which releases the sand over it.
Old 10-27-2010, 04:31 PM
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Default RE: So, I bought one of those fire proof LiPo bags...

these bags should be called "fire resistant" instead of fireproof. but since they dont cost much, they are worth the money IMO.
Old 10-27-2010, 04:42 PM
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Default RE: So, I bought one of those fire proof LiPo bags...

ORIGINAL: nitrosportsandrunner

these bags should be called ''fire resistant'' instead of fireproof. but since they dont cost much, they are worth the money IMO.
one I got think it was off ebay from china in big letters "LIPO-SAFE" under it in smaller letters (but still pretty big) "The LIPO-SAFE is intended to reduce the chances of damage in the event of a lipo fire." Main thing I find shocking about it is I got it from china and they got most the english correct on it (there is only one grammar error)
Others I've seen I don't recall reading fireproof on em
Old 10-27-2010, 08:35 PM
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dug44
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Default RE: So, I bought one of those fire proof LiPo bags...


ORIGINAL: Gweedz

I have a kitchen in my basement - so I plan on charging them in the oven with the door closed. Can't afford to waste 1hr per battery just watching them charge.
Wasting time? While working on RC's, or out at the track charging them on the work table while pitting? I was saying in a round about way not to leave it unatended.... is all

Old 10-27-2010, 08:44 PM
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Default RE: So, I bought one of those fire proof LiPo bags...

They're merely intended to be used while charging, but really in case they do start to sputter or catch fire to be used for transporting them outside.
My failsafe, other than using a lipo bag at the track, is to charge mine sitting atop a large clay flowerpot full of sand. Sand can be used to smother any fire, as it's the only safe way to extinguish one.

I know of someone that messed up their oven and kitchen by doing as you're suggesting. The fires can burn for hours.

I don't sit "watching them charge for an hour," instead I just make sure I'm in the same room.
Old 10-27-2010, 08:44 PM
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Default RE: So, I bought one of those fire proof LiPo bags...


ORIGINAL: Gweedz

What materials are required? An ABC extinguisher won't work?
No.
Old 10-27-2010, 08:59 PM
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ITS ME DAVID
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Default RE: So, I bought one of those fire proof LiPo bags...

im about to recieve my lipo and charger from hk.whats the safest way to charge and storage them.I live in an apartment so no garage no patio..
Old 10-27-2010, 09:07 PM
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Default RE: So, I bought one of those fire proof LiPo bags...

Lots of good info on the forum already. I suggest you familiarize yourself with the lipo-related discussions already on the forum.
Old 10-28-2010, 09:33 AM
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Gweedz
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Default RE: So, I bought one of those fire proof LiPo bags...

Wow, I didn't know they burned that intense, for that long. Time to rethink my plan.

I have a large metal box (used to hold a hammer drill or something) I can line with fire-resistant drywall and use that (along with the bag) and put it in the oven.

My issue with "watching it charge" is I have 2 very small kids at home that at any instant all hell can break lose and I need to rush to the rescue. It could easily be 1hr by the time I get back to what I was doing. So I'm looking for the safest way to charge - unattended (if necessary).

I don't go to a track so I can only charge at home. In the summer I can charge outside the house, but winter is coming...

Old 10-28-2010, 09:38 AM
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Default RE: So, I bought one of those fire proof LiPo bags...

I might have exxaggerated the time, but it's not like they flare up for a short period and go out. They burn and burn and burn, brighter and hotter.
And it's why all the manufacturers warn against "unattended charging."
Old 10-28-2010, 11:06 AM
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Default RE: So, I bought one of those fire proof LiPo bags...

HI
KEEP IN mind the smoke lipo give off is extremely highly corosive to a lot of things around themso you do not need to see a flame
Old 10-28-2010, 12:44 PM
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Eman77
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Default RE: So, I bought one of those fire proof LiPo bags...


ORIGINAL: ThunderbirdJunkie

ThunderbirdJunkie stores his lipos in a stack on top of the box of printer paper on top of his wooden table that sits between his two wooden desks.
TBJ never ceases to crack me up.
Old 10-28-2010, 04:09 PM
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Default RE: So, I bought one of those fire proof LiPo bags...

One thing I have seen done is to charge them inside a metal box, or a clay pot with a plastic bag filled with sand over the top. If there is a fire, it would melt the bag and cover the battery with sand which might smother the fire, or at very least help contain it.
Old 10-28-2010, 04:31 PM
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Default RE: So, I bought one of those fire proof LiPo bags...

In practice these bags are rather questionable, in order to be effective the LiPo needs to be fully placed inside the bag which makes it much harder to see any of the warning signs (like puffing, etc.) until it is too late.

Just like the hard case LiPos, people love to assume but in reality, the case (if opaque) makes it harder to see if the batteries inside have suffered any damage or are exhibiting the warning signs and need to be retired.

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