Batteries & Chargers Nicads, Nickel Metal Hydride, Lithium, LiPoly, Chargers, Cyclers, etc...

Fire Proof Lipo Vault

Reply
Old 02-14-2018, 08:40 AM
  #1
mustangman177
Thread Starter
 
Join Date: Aug 2002
Location: Cisne, IL
Posts: 744
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Fire Proof Lipo Vault

Looking into having a local iron-steel worker build a fire proof lipo vault for my batteries. Must have 50 lipos of various sizes ranging from 1000 mah 3s to 5000 mah 4s.

Thinking about a 1/4" steel box 24" square with barn doors in front. What do you think. Winter is almost over now, want to keep the batteries inside the house to prevent from freezing outside. Would this work ? What has others done to keep their lipos inside ?

I store them presently in ammo cans.

Last edited by mustangman177; 02-14-2018 at 09:03 AM.
mustangman177 is offline  
Reply With Quote
Old 02-14-2018, 10:36 AM
  #2
init4fun
 
init4fun's Avatar
 
Join Date: May 2009
Posts: 3,009
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Quote:
Originally Posted by mustangman177 View Post
Looking into having a local iron-steel worker build a fire proof lipo vault for my batteries. Must have 50 lipos of various sizes ranging from 1000 mah 3s to 5000 mah 4s.

Thinking about a 1/4" steel box 24" square with barn doors in front. What do you think. Winter is almost over now, want to keep the batteries inside the house to prevent from freezing outside. Would this work ? What has others done to keep their lipos inside ?

I store them presently in ammo cans.
The box will need some type of pressure relief if it's not to become a Bomb in the event of a LIPO fire within (like the Ammo cans will be if you ever have a fire) . Your trick will be , how to contain the heat & fire while letting the pressure escape . I dare say that the only thing worse than the heat & smoke of a LIPO fire would be the shrapnel of such an unvented Bomb going off when enough of the LIPOS get burining that the box can no longer contain the pressure (remember , of the big three in the fire triangle , Fuel , Oxidizer , and Heat , LIPOS already contain the first two)

I keep mine in a shed well away from the house , in one of those little "Dorm Fridge" coolers set to stay around 50 degrees
init4fun is offline  
Reply With Quote
Old 02-14-2018, 01:20 PM
  #3
pilotpete2
 
pilotpete2's Avatar
 
Join Date: Oct 2002
Location: Lyndonville, VT
Posts: 3,252
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Stick with the ammo cans!
Remember back when 2 B787's had their LiOn batteries melt down?
The sheet metal boxes (not the overboard vented containment system that was added) contained the fire, but the vented material made a mess in the electronics bays of the affected planes and a little smoke could be smelled in the cabin. If you look at pictures of the burned up batteries, most of the blue paint on the outside of the boxes survived the meltdown of the cells. In the winter, I keep my lipos in an ammo can in the basement and hope I never have to clean up the mass afterwords.
Storing your lipos at storage voltage of 3.85V per cell greatly reduces the danger of a fire and prolongs their useful life, a win-win.
Pete
pilotpete2 is offline  
Reply With Quote
Old 02-14-2018, 01:26 PM
  #4
mustangman177
Thread Starter
 
Join Date: Aug 2002
Location: Cisne, IL
Posts: 744
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I doubt if the iron box I would have made would be air tight with the (barn) doors on the front I would have built in. There would be a small gap for air. On my ammo cans, I took off the rubber seal on the top lid which made it air tight, so there is a gap on the top for air to escape. So, I don't think I would have the pressure build up from the Lipos causing the explosion.
Wish I could keep my Lipos stored away from the house as you do. I do have a small dorm fridge in the garage I could use. May go that route now that you mentioned it.
mustangman177 is offline  
Reply With Quote
Old 02-14-2018, 01:31 PM
  #5
mustangman177
Thread Starter
 
Join Date: Aug 2002
Location: Cisne, IL
Posts: 744
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Quote:
Originally Posted by pilotpete2 View Post
Stick with the ammo cans!
Remember back when 2 B787's had their LiOn batteries melt down?
The sheet metal boxes (not the overboard vented containment system that was added) contained the fire, but the vented material made a mess in the electronics bays of the affected planes and a little smoke could be smelled in the cabin. If you look at pictures of the burned up batteries, most of the blue paint on the outside of the boxes survived the meltdown of the cells. In the winter, I keep my lipos in an ammo can in the basement and hope I never have to clean up the mass afterwords.
Storing your lipos at storage voltage of 3.85V per cell greatly reduces the danger of a fire and prolongs their useful life, a win-win.
Pete
Thanks Pete. Would keep the Lipos in the Ammo cans inside the iron box. and I am storing at storage voltage 3.85V/Cell
mustangman177 is offline  
Reply With Quote
Old 02-15-2018, 06:43 AM
  #6
rgburrill
 
rgburrill's Avatar
 
Join Date: Dec 2010
Location: Trumbull, CT
Posts: 1,963
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

init4fun has the best idea. Storing all your batteries together means that if one catches fire they all will burn and that will burn though your box. If you don't have a storage shed buy one and put a small refrigerator in it. If you can own 50 lipos you can buy a storage shed.
And if I were you I'd buy a whole bunch of those charging bags and store 2 or 3 in each. That way if one catches on fire you are not destroying all of them.
rgburrill is offline  
Reply With Quote
Old 02-16-2018, 12:34 PM
  #7
pilotpete2
 
pilotpete2's Avatar
 
Join Date: Oct 2002
Location: Lyndonville, VT
Posts: 3,252
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Good grief!
Lipo batteries burning will not burn through even a light weigh steel box. As this burned up battery from a Boeing 787 shows. That box contained fully charged cells with a lot more capacity than us hobbyists deal with. A 50 cal. ammo can is heavier steel than the box in this photo
Lipo sacks are not any real protection for storing lipos. Their purpose is to make it easy to get a lipo that starts to ignite while being charged, safely outside.
Fifty lipos are a lot to store in any one location. 5 or 6 50 cal. ammo cans are an affordable solution. I believe they're less than 10 bucks at Wally World.
Pete
Click image for larger version

Name:	ntsb-photos-of-the-burned-auxiliary-power-unit-battery-from-a-jal-D3YXTW.jpg
Views:	6
Size:	131.0 KB
ID:	2254855
pilotpete2 is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 03:04 AM.