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HelicopterMain Discussion › LIPO Fire - WARNING!
06-04-2009 08:19 AM  8 years agoPost 101
dogg5306

rrVeteran

Brussels, Belgium

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What I don't understand is here, we are sitting here having numerous people with issues of exploding batteries, whether it be during charging, storage, or discharge, and yet the laptop industry has been using lithium batteries for years (probably more laptop lithiums batteries out there than RC batteries), and yet with the exception of one incidence with a recall Dell made on a screw up they had with their batteries where one caught fire, I haven't heard of any lithium laptop bonfires. The only difference I can see is faster discharging and recharging. If that's what it is, while we can't avoid fast discharging, we can avoid fast recharging.

Anyone know if the laptop computers have a built in balancer as well?
@maverick3n1

This is due to the fact that laptops are using Li-Ion batteries that are safer and don't need to be balanced...
(We're using Li-Pos)

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06-04-2009 03:07 PM  8 years agoPost 102
Maverick3n1

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San Diego, CA

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Are LiIon heavier/don't have as much power output capabilities, or what is the negatives to using them instead of LiPo?

Also, with some of these new Electric Cars coming out, are they running LiIon, or LiPo, as I know there are numerous cars out now that run all lithium.

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06-04-2009 03:27 PM  8 years agoPost 103
Darren Lee

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Woodstock, GA

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Are LiIon heavier/don't have as much power output capabilities
Yes and yes.

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06-04-2009 09:05 PM  8 years agoPost 104
Terrabit

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Seattle, WA - USA

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Also, with some of these new Electric Cars coming out, are they running LiIon, or LiPo, as I know there are numerous cars out now that run all lithium.
I believe the Prius is still using NiCad. I know it was up to the 2010 production run. The battery that has the best potential thus far for E-car application is lithium-phosphate or A123. A growing number of people are using these cells in competition vehicles, dragsters even.

Lithium-phosphate is a better e-car medium for several reasons.

1. They are less volitile or in effect, dangerous.

2. Cycle life is vastly better than lion or lipo cells. Think in the order of thousands.

3. They can be charged at absurd rates - like 15-20c.

4. They're cheap.

They also have some downsides:

1. Energy density and weight, not really even close to lipo. They are bulky and heavy.

2. Discharge rates are not as high either. No 40c for now.

The technology is not mature yet. There is enormous opportunity for growth in this area and there are some very promising possibilities on the immediate horizon. Hyperion is developing their G3 series which use Litium-silicon nano substrate in a combination stacked/rolled configuration.

Stanford University is credited with originating this technology. They were initially claiming a 10 fold increase in energy density. (add another zero behind the mah rating of your current lipo.)

Hyperion is claiming up to 40c discharge rates, 5c charge rates, and 4 times the cycle life. If these claims can be verified and duplicated consistently, we have a new leader in specialty batteries.

I'm not so sure about e-car applications as of yet. But I am certain that they will come along eventually. Hydrogen fuel cells may surpass convetional batteries in e-car applications. We can only hope!

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06-04-2009 10:28 PM  8 years agoPost 105
Doolidg

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Everett ,Wa

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Thank god for insurance huh!!!

(only run if I do!)

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06-04-2009 11:57 PM  8 years agoPost 106
DarkSide41

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Sylacauga Alabama USA

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How many cases have there been of lipos just spontanously catching fire or exploding without cause ?

Just use reasonable care when storing or charging the Lipos and there really isn't a problem.

I would hope that people don't fuel thier nitros indoors or in a automobile nor put thier hot heli away with nitro still in the tank. Why would you not use the same caution with the Lipo fuel source ?

Charging a Lipo unattended or in a closed space is like leaving a jug of nitro open with the electric pump running. You would not do that.

So come'on people...common sense

" The biggest threat to our freedom is not from foreign terrorist , but domestic morons"

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06-05-2009 12:23 AM  8 years agoPost 107
Ronald Thomas

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Gainesville, Fl, USA

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How many cases have there been of lipos just spontanously catching fire or exploding without cause ?
None.....there always is a cause, mostly abuse.

You guys that are worried about these cells in cars, don't be. Be worried about the gas tank that is already there Gasoline is way more volatile than lipos will ever be........Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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06-05-2009 12:35 AM  8 years agoPost 108
Yug

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UK. Herts

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Nanofibre electrodes are right around the corner. For lithium chemistry batteries, this means a power density improvement of 10 times, or a battery weighing a tenth of a current battery for the same capacity; a huge improvement in the number of cycles, charge times, discharge rates and moreover, reliability. The key to success is in the physical attributes of the electrodes.

Vegetable rights and Peace

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06-05-2009 01:05 AM  8 years agoPost 109
Terrabit

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Seattle, WA - USA

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Imagine what a 12s 40,000mAh lipo could do in a Logo 700 vbar.

Scarey!

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06-05-2009 03:06 AM  8 years agoPost 110
ShankBones

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La Quinta, CA USA

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Terrabit Imagine what a 12s 40,000mAh lipo could do in a Logo 700 vbar.
Scarey!
Yea, scary!.... You could plug into it and use it as an Arc Welder..

"Whats Right is Right and Whats Wrong is Not Flying"

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06-05-2009 05:31 AM  8 years agoPost 111
Terrabit

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Seattle, WA - USA

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Seriously! Or any manner of other things previously thought unimaginable.

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06-05-2009 06:52 AM  8 years agoPost 112
myaces

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North Bend, Wa

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Terrabit Imagine what a 12s 40,000mAh lipo could do in a Logo 700 vbar.
When can I order the 8S 21,000 mAh lipo for my 500? 40 minute flight times you say?

~Team Collective Mayhem

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06-05-2009 07:04 AM  8 years agoPost 113
tucfaz

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Singapore

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When can I order the 8S 21,000 mAh lipo for my 500? 40 minute flight times you say?
Wow.. 21,000mAh 40 minutes.. I'll take 2 then

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06-06-2009 04:39 AM  8 years agoPost 114
Maverick3n1

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San Diego, CA

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To think, with technology coming that far, we could very well be nearing the era of electric powered airplanes... As in lifesize, not model. Imagine plugging your Cesna in for a charge, and then going on a few hour flight...

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06-06-2009 01:37 PM  8 years agoPost 115
twinpeak

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Prague, Czech Republic

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Was it a van from a GM company?
If yes, at least you won´t have to waste time, trying to find parts for a car, who´s manufacturer is bankrupt.....

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06-06-2009 06:11 PM  8 years agoPost 116
Terrabit

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Seattle, WA - USA

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Ooooo good one!

Too bad he can't go out and buy a Yugo.

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10-04-2009 04:18 PM  8 years agoPost 117
duke666

rrKey Veteran

Hampshire, UK

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I might have missed it in the thread somewhere, but, does any one know for certain the actual reason for the fire?

Duke

OOOPPS............

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10-04-2009 05:15 PM  8 years agoPost 118
Kinger

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Granville, OH

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This thread is another reminder to me that I need to buy some lipo sacks. Anyone have any good recommendations for versions that will fit up to 6S packs?

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10-04-2009 06:56 PM  8 years agoPost 119
RotorTech321

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Scranton, PA. USA

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Hey Vibe90SG, I think that is a great idea to have around all the time. And for the people who were laughing, just consider the source.

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10-04-2009 07:12 PM  8 years agoPost 120
thenewguy

rrElite Veteran

Corvallis, Oregon Where there is liquid sunshine!

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Just a thought, if flying fields provide power for people to charge at the field, maybe they should have a designated charging area also.

A place you have to charge if charging at the field. It could have a fire extinguisher next to it and force people to take there battery out of the plane/helicopter to charge it.

Could be aways from the pits and have contact emergency numbers provided.

Just an ideal.

Chris

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HelicopterMain Discussion › LIPO Fire - WARNING!
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