RunRyder RC
WATCH
 6 pages [ <<    <     1     ( 2 )     3      4     NEXT    >> ] 5283 views POST REPLY
HomeAircraftHelicopterHelicopter Main Discussion › Serious Battery Fire
02-23-2016 02:05 AM  33 months agoPost 21
Steve_JR

rrVeteran

Mount Joy, PA

My Posts: All  Forum  Topic

It does make you wonder though... What if the customer had mailed his Phantom into this place? What if it decided to go off like that when the UPS/FedEX/USPS plane was in the air?

Steve - Mount Joy RC Club

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 02:44 AM  33 months agoPost 22
utahbob

rrVeteran

St. George Utah

My Posts: All  Forum  Topic

I been seriously thinkin of
buying and old refrigerator that is on wheels; gutting it and fixing it up to charge inside and also store the batts; I'd have a metal wall to keep the batts isolated from the chargers in case of fire..with a sand dump mechanism right over the battery area; if one starts to burn I would dump the sand;disconnect everything and roll it out of the garage!..Sound Good?

I do a great decending funnel!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 04:16 AM  33 months agoPost 23
sean911sc

rrVeteran

San Diego

My Posts: All  Forum  Topic

Questions not answered:

1. Battery info? Age, condition, brand, etc.
2. Charging info? C rate, balance board used, etc.
3. Do Ammo boxes provided any protection?

Thanks,

William S Harris

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 06:54 AM  33 months agoPost 24
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

You see a picture like that and all you should do is focus on what WASN'T lost!

Thanks for sharing. This is the type of thing that makes me conscious.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 10:49 AM  33 months agoPost 25
MartyH

rrProfessor

USA

My Posts: All  Forum  Topic

No the ammo boxes do not contain the fire. The problem is the pressure. They bulge and fail. On top of that, many of us store a bunch of batteries together in an ammo can right? One goes off and it takes the rest of them with it. I like the plastic bag over sand idea. Some version of that is going to be incorporated into my storage shortly. Currently, Like many I store LiPo's in an ammo can but I have always been nervous about that. I ONLY charge outdoors away from structures but I store indoors and that causes me heartburn when you see videos like the one in this thread.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 11:17 AM  33 months agoPost 26
Heli_Splatter

rrElite Veteran

USA

My Posts: All  Forum  Topic

I must add... I drill a 1/4 inch hole in my ammo boxes. That is to relieve the pressure of a battery going off... smoke? yes, I expect it to smoke and that is a real problem too.

Hopefully the metal containment box and relative lack of oxygen will keep the flames from growing igniting other materials. A fire has to have oxygen... where is it getting oxygen inside the box? OK, my small hole, maybe I should rethink that. I store a lot of batteries in an ammo box.

I would be interested in hearing from anyone having a battery go off in a ammo box and the results.
.
.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 11:53 AM  33 months agoPost 27
ZS-JAF

rrVeteran

Nazareth, PA

My Posts: All  Forum  Topic

My buddy set off a small lipo in an ammo can to see what happened. The result was that the can burst open due to there not being a hole. The hole is a must to avoid failure but I would guess that some flame will be coming out of the hole.

I have a 3D heli, I don't understand why it doesn't do 3D.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 12:56 PM  33 months agoPost 28
Pistol Pete

rrProfessor

Seffner, FL

My Posts: All  Forum  Topic

Complete Guide to LiPo Batteries and Failure Reports - Part II.
http://www.rcgroups.com/forums/showthread.php?t=1287041

~~Enjoying the hobby one flight at a time~~

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-23-2016 01:09 PM  33 months agoPost 29
RappyTappy

rrProfessor

Traveling the USA

My Posts: All  Forum  Topic

A lipo is not a fire that needs much air to ignite violently since it's a chemical fire, so not much concern to have a small pressure vent.

But yes, you need to vent the ammo box to make sure gases can escape. As long as the sand is on top no fire would be coming out of the hole. The point of the ammo box is not to contain the blast but to contain the small embers that can be emitted through the sand as you could see in the video.

Yes, storing mutiple batteries was my concern too, so I usually separate them as best I can with multiple bags of sand. Although I havent tested it in real life, my theory is the sand will protect the other batteries from direct flame and shield them from the most intense heat. The sand works very well because it literally turns to glass under the intense heat and shields better as the flame gets hotter.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 02:38 PM  33 months agoPost 30
Richardmid1

rrProfessor

Leeds, England

My Posts: All  Forum  Topic

12 years charging li-po's and not one puff of smoke here. I use a good charger and don't charge damaged li-po's.

Plenty of things can and do burn houses down.

60% of the time, it works every time!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-23-2016 02:49 PM  33 months agoPost 31
Cra-Z-1

rrApprentice

Washington,UT-USA

My Posts: All  Forum  Topic

Also makes me wonder just how hot the outside of that can would get with even a single lipo going thermal.

Ban the Ban.

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
02-23-2016 03:47 PM  33 months agoPost 32
MartyH

rrProfessor

USA

My Posts: All  Forum  Topic

12 years charging li-po's and not one puff of smoke here. I use a good charger and don't charge damaged li-po's.

Plenty of things can and do burn houses down.
I've had the same success as you but.... Yes, plenty of things burn down houses but usually the house doesn't spontaneously combust. These Lipos concern me a lot. I like the plastic bag of sand over the batteries idea A LOT!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 04:33 PM  33 months agoPost 33
wrongler

rrProfessor

Brewerton, New York

My Posts: All  Forum  Topic

Use a cement block and put the lipos in the webbing, or use an old grill!

Bill Whittaker

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 05:22 PM  33 months agoPost 34
Steve_JR

rrVeteran

Mount Joy, PA

My Posts: All  Forum  Topic

I'll say it again because now it is probably lost on the previous page. I have yet to see/hear of a confirmed, healthy battery that just randomly caught fire.

Steve - Mount Joy RC Club

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 05:46 PM  33 months agoPost 35
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

yet to see/hear of a confirmed, healthy battery that just randomly caught fire.
Agreed. It's usually during a charging event. And if it isn't that, it's from shorting the cells or other damage - be it from a crash or touching leads, dropping the battery, etc.

But just going off sitting there? Unprovoked? I've heard a claim or two - but then you have to wonder if there isn't something being hidden - like dodging responsibility for an insurance claim, or ego protection, for example. Just saying.

Like that EZDrone video, we can't see the battery, but we do see the guy taking a moment with the battery when they first see something is up. He approaches the battery in a hurry and handles it with both hands for a moment before he has to retreat. Just what was he doing before it went nuclear? They claim it wasn't plugged into anything but I wasn't born yesterday. He gets both hands in there like he's unhooking it. It's pretty clear to me it wasn't "just sitting there, not even plugged into anything" because he was clearly handling the battery in some way that wouldn't be normal for a battery just sitting there.

..Just look at it. Try to imagine using your hands in the way he is for a puffing battery that is just sitting there. It's a BS claim. He is CLEARLY unhooking it from something. Likely a charger.

So, I can believe the battery "just went off" or I can believe that a bunch of guys at "EZDrone" might have made a mistake.

Just went off? Color me unconvinced.

The whole concept of lipos spontaneously combusting reminds me of my other hobby, firearms, where people will claim a gun "just went off." I suppose manufacturer defect is possible in both cases, but I highly doubt with the majority of claims that there is anything wrong with anything but the user. People will totally distort facts to protect their ego, image, wallet, anything.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 06:05 PM  33 months agoPost 36
Calil

rrApprentice

Brazil

My Posts: All  Forum  Topic

Guys

Use this:

PM  EMAIL  Attn:RR  Quote
02-23-2016 06:11 PM  33 months agoPost 37
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

Have to drill a hole as others said. Otherwise it might become a an ammo can fragmentation bomb. Anyone know the internal pressure specs for an ammo can?

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 06:17 PM  33 months agoPost 38
MartyH

rrProfessor

USA

My Posts: All  Forum  Topic

That is what I use. I'm going to have to go drill a hole in it.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 06:18 PM  33 months agoPost 39
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

Marty - reedited.

I did a little research.

http://my.firefighternation.com/for...unition-is-this

Apparently an ammo can lid is only designed to nominally protect the ammo from moisture and minor impacts. It is not designed to contain internal pressures associated with the ammo cooking off. So I imagine a hole might be in order.

Unfortunately, a hole does render an ammo can completely useless for it's original intended purpose. Moisture will shorten the life of any ammo stored in it. So once you drill the hole, it's no longer an ammo can at all, is one way to look at it.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-23-2016 07:07 PM  33 months agoPost 40
Calil

rrApprentice

Brazil

My Posts: All  Forum  Topic

I have seen people using pressure cooker either.

I'm not kiding, I have seen it.

PM  EMAIL  Attn:RR  Quote
WATCH
 6 pages [ <<    <     1     ( 2 )     3      4     NEXT    >> ] 5283 views POST REPLY
HomeAircraftHelicopterHelicopter Main Discussion › Serious Battery Fire
 Print TOPIC  Make Suggestion 

 20  Topic Subscribe

Tuesday, November 20 - 1:21 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online