Wattflyer RC Network: RC Universe :: RCU Magazine :: RCU Forums :: RCU Classifieds :: RCU User Reviews :: RCU YouTube
Home Who's Online Calendar Today's Posts RealTime Post Spy Mark Forums Read
Go Back   WattFlyer RC Electric Flight Forums - Discuss radio control eflight > R/C Electric Power - Batteries, Chargers, ESCs and More > Batteries & Chargers
Register Members List Wattflyer Extras Articles Search Today's Posts Mark Forums Read Social Groups

Batteries & Chargers Discuss Li-P, Li-Ion, NiMh, Nicad battery technology and the chargers that juice 'em up!

Thank you for your support (hide ads)
Reply
 
Thread Tools Display Modes
Old 03-25-2014, 07:30 AM   #1
tonywayne
New Member
 
Join Date: Mar 2014
Posts: 3
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default Lipo exploding

Just shows how tough lipos are, but how violent they can be!

https://www.youtube.com/watch?v=WrbP3AMMsbM
tonywayne is offline  
  Reply With Quote
Old 03-25-2014, 04:35 PM   #2
sidybee
Member
 
Join Date: Feb 2014
Location: middle of cali
Posts: 75
Thanked 1 Time in 1 Post
iTrader: (0)
Friends: (0)
Default

weenier roast time.... ummm marshmallows
sidybee is offline  
  Reply With Quote
Old 03-26-2014, 02:44 AM   #3
hayofstacks
Super Contributor
 
hayofstacks's Avatar
 
Join Date: Jan 2012
Location: Utah
Posts: 1,557
Thanked 115 Times in 114 Posts
iTrader: (0)
Friends: (5)
Default

Throw a cup full of gas/nitro in a fire, then tell me which creates more of a fire hazard.

Even though they burn hot, its usually, short, and pretty well contained. a ceramic bowl is plenty to keep you safe from most batteries

slow stock prop reversal. it flies! easily! 543 watt dual motor bipe slow stick. push-me-pull-you. 242 watt 3 channel slow stick. 365 watt mini ultra stick. 415 watt mini contender. 810 watt ultra stick .25e. 220 watt alpha 450 sport (retired).
hayofstacks is offline  
  Reply With Quote
Old 03-26-2014, 04:24 PM   #4
Rodneh
Member
 
Join Date: Oct 2005
Location: Florida, USA
Posts: 718
Thanked 69 Times in 68 Posts
Club: Moonport Modelers
iTrader: (0)
Friends: (0)
Default

The title is somewhat misleading; LiPo's do not explode, they burn. Quite a difference between an explosion and a fire.
Rodneh is online now  
  Reply With Quote
Old 03-26-2014, 04:27 PM   #5
Larry3215
Look out for that tree!!!
 
Larry3215's Avatar
 
Join Date: Mar 2006
Location: Gig Harbor, Wa USA
Posts: 6,803
View Larry3215's Gallery63
Thanked 692 Times in 671 Posts
Club: Kitsap ARCS & E-FLAPS
Awards Showcase

90 Minute Thermal Duration  60 Minute Thermal Duration  30 Minute Thermal Duration  4kW 
iTrader: (6)
Friends: (21)
Default

Originally Posted by hayofstacks View Post
Throw a cup full of gas/nitro in a fire, then tell me which creates more of a fire hazard.

Even though they burn hot, its usually, short, and pretty well contained. a ceramic bowl is plenty to keep you safe from most batteries
Not really.

When a lipo catches fire and starts venting it, spits out burning pieces of itself that can travel quite a long ways and set fire to things on the far side of a typical work room very easily.

I had a lipo fire in my work shop several years ago. The lipo was in one corner of the shop sitting on my bench when it went off. I found holes burned all the way through models, cloths, carpet, and cardboard boxes that were on the far side of the room. In fact, there were burn marks on almost every single exposed surface in the entire room.

You must use an enclosed container that will contain those flying sparks or you are not protected from secondary fires.

The only reason I didnt loose the entire house was the fact I was right there and managed fast action with a large fire extinguisher. There was still almost $15,000 in damages to the room and contents -0 including 7 models ruined.

I think I need a signature.
Larry
Larry3215 is offline  
  Reply With Quote
Old 03-26-2014, 04:43 PM   #6
Larry3215
Look out for that tree!!!
 
Larry3215's Avatar
 
Join Date: Mar 2006
Location: Gig Harbor, Wa USA
Posts: 6,803
View Larry3215's Gallery63
Thanked 692 Times in 671 Posts
Club: Kitsap ARCS & E-FLAPS
Awards Showcase

90 Minute Thermal Duration  60 Minute Thermal Duration  30 Minute Thermal Duration  4kW 
iTrader: (6)
Friends: (21)
Default

Just to illustrate how poorly an open container will work - here are some pics from my fire. The lipo pack was being charged in one of those metal document safes - but the lid was open.


Attached Thumbnails
Click image for larger version

Name:	fire1 013 (Large).jpg
Views:	50
Size:	122.4 KB
ID:	174306 document box on right side. Hole melted in depron sheets on left side.
Click image for larger version

Name:	fire1 012 (Large).jpg
Views:	55
Size:	102.1 KB
ID:	174307 This model was on far side of room up on shelf near the ceiling. At least 15 feet away from the pack. and 6 feet higher.
Click image for larger version

Name:	fire1 024 (Large).jpg
Views:	47
Size:	123.0 KB
ID:	174308 Depron scraps on the other side of the room maybe 8 feet away.

I think I need a signature.
Larry
Larry3215 is offline  
  Reply With Quote
Old 03-26-2014, 05:20 PM   #7
thepiper92
Warbird Fanatic
 
thepiper92's Avatar
 
Join Date: Nov 2013
Location: Winnipeg, Canada
Posts: 1,228
Thanked 27 Times in 26 Posts
iTrader: (0)
Friends: (4)
Default

Yikes, lot of damage. That depron looks like the plastic used for folding table, with the little specks in it.
thepiper92 is offline  
  Reply With Quote
Old 03-26-2014, 05:46 PM   #8
kenchiroalpha
Retired Master Chief USN
 
kenchiroalpha's Avatar
 
Join Date: Jul 2006
Posts: 3,837
View kenchiroalpha's Gallery2
Thanked 300 Times in 294 Posts
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (168)
Default

Hi
To be on the safe side I use these while charging and storing
http://liposack.com
Also I never leave them unattended while charging always be present while doing so
Take care
Yours Hank

"When wild the head-wind beat,Thy sovereign Will commanding, Bring them who dare to fly, To a safe landing."
kenchiroalpha is offline  
  Reply With Quote
Old 03-26-2014, 07:09 PM   #9
Larry3215
Look out for that tree!!!
 
Larry3215's Avatar
 
Join Date: Mar 2006
Location: Gig Harbor, Wa USA
Posts: 6,803
View Larry3215's Gallery63
Thanked 692 Times in 671 Posts
Club: Kitsap ARCS & E-FLAPS
Awards Showcase

90 Minute Thermal Duration  60 Minute Thermal Duration  30 Minute Thermal Duration  4kW 
iTrader: (6)
Friends: (21)
Default

LipoSacks are one of the best/easiest ways to protect your home and family.

I would recommend putting the liposack on a non-flammable surface. The sack will get extremely hot when a lipo goes off. Hot enough to start secondary fires if its sitting on a wood shelf or near papers, carpet, etc.

I now put my liposack inside my metal document safe when charging - with the lid still open.

DO NOT try to enclose a lipo in a tight fitting case when charging. The huge volume of gasses released can explode the container. I have seen videos of ammo cans burst open when a lipo went off.

I think I need a signature.
Larry
Larry3215 is offline  
  Reply With Quote
Old 03-26-2014, 08:55 PM   #10
CHELLIE
Super Contributor
 
CHELLIE's Avatar
 
Join Date: Oct 2006
Location: Hesperia, So. Calif
Posts: 18,402
View CHELLIE's Gallery13
Thanked 2,138 Times in 2,047 Posts
Club: Chino Renegades RC Flying Club
Awards Showcase

Scratchbuilders Award  Scratchbuilders Award  Ambassador Award  100mph Speed Demon 
iTrader: (4)
Friends: (308)
Default

Originally Posted by Larry3215 View Post
LipoSacks are one of the best/easiest ways to protect your home and family.

I would recommend putting the liposack on a non-flammable surface. The sack will get extremely hot when a lipo goes off. Hot enough to start secondary fires if its sitting on a wood shelf or near papers, carpet, etc.

I now put my liposack inside my metal document safe when charging - with the lid still open.

DO NOT try to enclose a lipo in a tight fitting case when charging. The huge volume of gasses released can explode the container. I have seen videos of ammo cans burst open when a lipo went off.
I agree with you Larry, Ceramic flower pots are good to use, Only if you put a Ceramic floor tile on top of them, Ammo cans are good to use, Only if you vent them to allow the pressure to Escape so it does not blow up, Lipo sacks are great to use too. A Person really has to be careful using Lipos and Think Safety all the Time. Take care, Chellie



I may be getting Older, But I Refuse to grow Up I am Having to much Fun to Grow Up LOL
CHELLIE is offline  
  Reply With Quote
Old 03-27-2014, 01:47 AM   #11
FlyWheel
Ochroma Lagopus Tekton
 
FlyWheel's Avatar
 
Join Date: Jul 2007
Location: Blackstock, South Carolina
Posts: 2,537
View FlyWheel's Gallery5
Thanked 70 Times in 68 Posts
Club: Lancaster County Fliers
iTrader: (0)
Friends: (3)
Default

I use a ceramic pot; battery cord out through the drain hole in the bottom and connected to the charger outside, top open so if it does go up it can burn itself out safely. Vigorous burning + closed container = bad.

"Give a man a plane and he'll fly for a day.
Teach a man to build a plane and he'll fly for a lifetime"
FlyWheel is offline  
  Reply With Quote
Old 03-28-2014, 06:13 PM   #12
ramboman
Member
 
Join Date: Mar 2006
Location: Waterloo, Belgium
Posts: 79
Thanked 3 Times in 3 Posts
iTrader: (0)
Friends: (0)
Cool THE alternative

Since years I am using a123... NO risk at all !
ramboman is offline  
  Reply With Quote
Old 03-28-2014, 08:37 PM   #13
kenchiroalpha
Retired Master Chief USN
 
kenchiroalpha's Avatar
 
Join Date: Jul 2006
Posts: 3,837
View kenchiroalpha's Gallery2
Thanked 300 Times in 294 Posts
Awards Showcase

Outstanding Contributor Award 
iTrader: (0)
Friends: (168)
Default

Originally Posted by ramboman View Post
Since years I am using a123... NO risk at all !
Hi
Even those are not risk free aand you should take precautionary measures during the charging process imho
http://www.greencarreports.com/news/...rom-a123-cells
Take care
Yours Hank

"When wild the head-wind beat,Thy sovereign Will commanding, Bring them who dare to fly, To a safe landing."
kenchiroalpha is offline  
  Reply With Quote
Old 03-29-2014, 12:50 AM   #14
kyleservicetech
Dennis V
 
kyleservicetech's Avatar
 
Join Date: Apr 2008
Location: Wisconsin, USA
Posts: 7,999
Thanked 696 Times in 678 Posts
Club: www.racinercclub.com (I'm the newsletter editor)
Awards Showcase

Outstanding Contributor Award  3kW  2kW  100mph Speed Demon 
iTrader: (1)
Friends: (20)
Default

Originally Posted by Larry3215 View Post
Just to illustrate how poorly an open container will work - here are some pics from my fire. The lipo pack was being charged in one of those metal document safes - but the lid was open.
Hey, finally found someone whose workbench has as much crap on it as mine

One of my club members' workbench, and entire workshop for that matter is so clean you could eat off of it.

Having seen several LiPo fires, one of which was a 12S 5000 Mah pack after a straight in crash, I'd never want one to go off anywhere near my home.

DennyV
Retired and the days are just too short, busier than ever!
kyleservicetech is offline  
  Reply With Quote
Old 03-29-2014, 01:02 AM   #15
kyleservicetech
Dennis V
 
kyleservicetech's Avatar
 
Join Date: Apr 2008
Location: Wisconsin, USA
Posts: 7,999
Thanked 696 Times in 678 Posts
Club: www.racinercclub.com (I'm the newsletter editor)
Awards Showcase

Outstanding Contributor Award  3kW  2kW  100mph Speed Demon 
iTrader: (1)
Friends: (20)
Default

Originally Posted by kenchiroalpha View Post
Hi
Even those are not risk free aand you should take precautionary measures during the charging process imho
http://www.greencarreports.com/news/...rom-a123-cells
Take care
Yours Hank
Just a note.

The report indicates that a Lithium Ion battery failed, not the Lithium Nano-phosphate chemistry used in an A123 or similar LiFe chemistry.

Lithium Ion cells are charged to 4.2 Volts DC, versus a maximum of 3.6 Volts DC for the A123's.

There is a video where they subject an 2300 Mah A123 cell to a nail puncture, running a nail clear through the cell. Lots of smoke, but zero fire.

And, lastly, I did my own test on a pair of A123's several years ago, charging them at 3 Amps, to 14 Volts on two cells. The cells blew apart, made a lot of carbon dust all over the place. But zero fire, zero damage to anything nearby.

DennyV
Retired and the days are just too short, busier than ever!
kyleservicetech is offline  
  Reply With Quote
Old 03-29-2014, 01:03 AM   #16
kyleservicetech
Dennis V
 
kyleservicetech's Avatar
 
Join Date: Apr 2008
Location: Wisconsin, USA
Posts: 7,999
Thanked 696 Times in 678 Posts
Club: www.racinercclub.com (I'm the newsletter editor)
Awards Showcase

Outstanding Contributor Award  3kW  2kW  100mph Speed Demon 
iTrader: (1)
Friends: (20)
Default

Originally Posted by ramboman View Post
Since years I am using a123... NO risk at all !

Yup
I've got over 100 of these A123 cells in a variety of models. Zero problems. In fact, those A123 packs are permanently installed in their respective model airplanes.

DennyV
Retired and the days are just too short, busier than ever!
kyleservicetech is offline  
  Reply With Quote
Old 03-29-2014, 07:06 AM   #17
ramboman
Member
 
Join Date: Mar 2006
Location: Waterloo, Belgium
Posts: 79
Thanked 3 Times in 3 Posts
iTrader: (0)
Friends: (0)
Cool

Originally Posted by kyleservicetech View Post
Yup
I've got over 100 of these A123 cells in a variety of models. Zero problems. In fact, those A123 packs are permanently installed in their respective model airplanes.
I do the same, using SPS to disconnect when charging, a dream
ramboman is offline  
  Reply With Quote
Old 03-29-2014, 02:46 PM   #18
FlyWheel
Ochroma Lagopus Tekton
 
FlyWheel's Avatar
 
Join Date: Jul 2007
Location: Blackstock, South Carolina
Posts: 2,537
View FlyWheel's Gallery5
Thanked 70 Times in 68 Posts
Club: Lancaster County Fliers
iTrader: (0)
Friends: (3)
Default

Originally Posted by kyleservicetech View Post
Hey, finally found someone whose workbench has as much crap on it as mine

<snip!>
That's because you've never seen mine!

"Give a man a plane and he'll fly for a day.
Teach a man to build a plane and he'll fly for a lifetime"
FlyWheel is offline  
  Reply With Quote
Old 03-29-2014, 08:11 PM   #19
hayofstacks
Super Contributor
 
hayofstacks's Avatar
 
Join Date: Jan 2012
Location: Utah
Posts: 1,557
Thanked 115 Times in 114 Posts
iTrader: (0)
Friends: (5)
Default

The 3 cells I've seen go off are more of a smoke show then anything. I'm not saying lipos are always safe, but out of abbout 50 I've only had one fail.

i charge my batteries in a concrete block.

slow stock prop reversal. it flies! easily! 543 watt dual motor bipe slow stick. push-me-pull-you. 242 watt 3 channel slow stick. 365 watt mini ultra stick. 415 watt mini contender. 810 watt ultra stick .25e. 220 watt alpha 450 sport (retired).
hayofstacks is offline  
  Reply With Quote
Old 03-29-2014, 11:19 PM   #20
tr4252
Member
 
tr4252's Avatar
 
Join Date: Jun 2010
Location: Syracuse, NY
Posts: 290
Thanked 17 Times in 17 Posts
iTrader: (1)
Friends: (3)
Default

Originally Posted by hayofstacks View Post

i charge my batteries in a concrete block.
I think that's a pretty good method.

I had a bunch of refractory bricks left over from a heat treating oven project, and store mine in a sort of vault I made by stacking them. They should contain solid bits of flaming battery, but allow smoke and pressure to escape.

It's the smoke that bothers me as well, though. Right now my model stuff is in a room with old guitars, a few antique guns, and a nice stereo, among other valuables. I wonder if the smoke can do any damage.

Thinking of finding a way to vent the container to the outside.

Tom
tr4252 is offline  
  Reply With Quote
Reply

  WattFlyer RC Electric Flight Forums - Discuss radio control eflight > R/C Electric Power - Batteries, Chargers, ESCs and More > Batteries & Chargers

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
100+ MPH Club CHELLIE Hi-Performance and Sailplanes 1955 08-20-2014 02:55 AM
How to use a RC Lipo charger properly? SimonXi Power Systems 0 08-17-2011 11:02 AM
Solid experience on RC Model Lipo Battery Accident & Charger Guide SimonXi Batteries & Chargers 0 08-12-2011 05:08 PM


All times are GMT +1. The time now is 08:59 PM.


Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

Charities we support Select: Yorkie Rescue  ::  Crohn's & Colitis Foundation



Page generated in 0.36342 seconds with 64 queries