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Oct 15, 2009, 01:03 AM
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Discussion

What fire extinguisher for lipo


Hi,
What fire extinguisher to use for lipo in case it causes fire?
Can you buy any at OSH, Home Depot?
Thanks
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Oct 15, 2009, 01:16 AM
**** 37130 ****
RobC(UK)'s Avatar
A LiPo fire is a chemical reaction and you are not going to stop it!

A multipurpose powder extinguisher to deal with any secondary fires might be a good idea.

Rob
Oct 15, 2009, 01:27 AM
Boffin
rpage53's Avatar
Quote:
Originally Posted by whatala
Hi,
What fire extinguisher to use for lipo in case it causes fire?
Can you buy any at OSH, Home Depot?
Thanks
CO2 helps to cool the battery down, extinguish it as quickly as possible and puts out the secondary fires. But they are expensive too. I recommend a LiPo Sack and hopefully you won't need an extinguisher.

Rick.
Oct 15, 2009, 04:25 AM
Proud to eat Kraut ;-)
Julez's Avatar
The stuff burning at LiPo fires is not the Lithium metal itself, but the evaporating electrolyte.
So any fire extinguisher suitable for liquid or gaseous stuff will work fine with LiPos.
Oct 15, 2009, 05:06 AM
Fast and low...
aa78's Avatar
I use a 2Kg sodium bi-carbonate based extinguisher suitable for ABC category fires.
Oct 15, 2009, 05:19 AM
Electric Helis is my game
MrMel's Avatar
Bucket of sand?

Never tried it in real life situation, but it should work, right?
(for primary fire on the pack)
Oct 15, 2009, 05:29 AM
Proud to eat Kraut ;-)
Julez's Avatar
Even better: Plastic bag with sand, placed over the LiPo.
If it catches fire, the plastic melts and the sand pours directly onto it.
Oct 15, 2009, 05:32 AM
Registered User
perttime's Avatar
Anyway, the starting point should be that a LiPo is charged in a suitable place and a container or sack that prevents the fire from spreading.
Oct 15, 2009, 06:45 AM
Southern Pride
everydayflyer's Avatar
Quote:
Originally Posted by aa78
I use a 2Kg sodium bi-carbonate based extinguisher suitable for ABC category fires.
I use would imply that you have actually used this on an actual LiPoly fire. If this is the case then tell us more please.

Years ago I was a Tool & Die Maker and for a number of years worked in a shop that machined an awful lot of magnesium which is a metal that burns similar to a LiPolys in that most extinguishers have no effect on it. We had very expensive pressurized extinguishers and also 5 gallon buckets of a special compound on hand and needed it a few time.


Charles
Oct 15, 2009, 07:06 AM
7000mw of raw power!
rich smith's Avatar
Lipo will "burn" w/o air so the bag of sand or lipo sack sound ok.

Apparently magnesium will burn in nitrogen and CO2 so require special extinguishing methods.
Oct 15, 2009, 07:46 AM
Suspended Account
Beer? (secondary source)
Oct 15, 2009, 09:31 AM
Registered User
Quote:
Originally Posted by angelfood
Beer? (secondary source)
Beer sounds good. I have plenty at my house
Oct 15, 2009, 09:35 AM
Suspended Account
Yes, but be sure to drink it, first.
Oct 15, 2009, 09:46 AM
Registered User
videocruzer's Avatar
a few years ago I saw i lipo fire from about 5 miles away.
the cloud was atleast 500' high and 50' wide. more then likely it was alot bigger but hard to measure.
I was on my way to the field when i saw it. by the time i arrived it was out and no one was badly burned. I should have taken a picture of all the spent fire extinguishers by what was left of the 6s 5000.
the guys that used the extinguishers were blown away by how inafective thier attemps were at putting out the fire.
Oct 15, 2009, 10:18 AM
I will be an angry old man!
marc1's Avatar
You need a class D fire extinguisher. They are not cheap. The typical ABC household extinguisher will be ineffective.

I believe the powder Charles referred to is called graphite powder (Lith-X), at least that's what we have lying around when working with li-ion batteries.

Why is it so hard to find the MSDS for lipo cell? I could find some for LiMn, LifePo4, LiIon, but not Lipo?
Last edited by marc1; Oct 15, 2009 at 10:25 AM.


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