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HomeAircraftHelicopterMain Discussion › New lipo storage
11-11-2014 07:00 PM  3 years agoPost 21
gwright

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Champaign Il

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I forgot to mention, although the basement is my workshop, I don't allow lipo storage down there. They have to be in containment in garage (either amo can/large metal toolbox, or fridge). Yes, I know I'm overly paranoid, but I've been using lipo's since the beginning of their use in RCand I've seen the damage they can do if mishandled. I had one of the first packs Charlie shipped out for testing (3S/8000) and I've had two fires, so you can understand my paranoia. first one was a 9S/8000 and the second was a 5S/8000 (initially there were only 5C/10C cells and 2000mah, so everything was paralleled to high P counts, hence 9S/4P and 3S/4P in the above fires) We did not have balancing chargers, there were no balance taps on the packs, and we didn't even know about the need for balancing. the 9S pack I had mistakenly set to charge as 10S, and the 5S pack had been over discharged but I thought I could recover it like a nicad. I think those were 2002~2003 timeframe, or something like that. Once you see the amount of smoke from a pack like that, and the inability to extinguish it with a normal fire extinguisher, you get paranoid and you get very carefull with storage.

Gary Wright

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11-11-2014 07:02 PM  3 years agoPost 22
Aaron29

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USA

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That just proves my point. This is sort of the pattern I see. Lipo fire because reasons. Not just out of blue.

If a lipo were truly a bomb without causes I'd have nothing to do with them.

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11-11-2014 07:52 PM  3 years agoPost 23
Ace Dude

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USA

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I forgot to mention, although the basement is my workshop, I don't allow lipo storage down there. They have to be in containment in garage (either amo can/large metal toolbox, or fridge). Yes, I know I'm overly paranoid, but I've been using lipo's since the beginning of their use in RCand I've seen the damage they can do if mishandled.
Thanks for sharing Gary. My next step is to move my LiPos to my garage. Currently I have them in a Justrite flammable liquids storage container in my basement which has a smoke detector in it in addition to the connected smoke detectors in the house.

Based on others experiences I now limit charging indoors to very small packs and only when necessary. Even if a LiPo fire is contained there can still be extensive smoke damage to deal with. I've been having good luck with doing all my charging and dis-charge/storage charging at the field. It's one less thing I have to do at home before and after flying.

  

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11-11-2014 07:56 PM  3 years agoPost 24
gwright

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Champaign Il

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yes, because of reasons,.. my own fault due to our ignorance of proper lipo treatment at the time. I say "our" because the modeling community as a whole didn't know we needed to balance the cells, and there were no balancing chargers available.
I understand there has to be a catalyst,(overcharge, too much heat,physical damage,..etc.) lipos don't spontaneously combust,.. but I don't trust anyone, including myself, so I'm very cautious. Is it over-cautious?,.. probably. Do I care?,..no. I'll happily continue to be the eccentric modeler others laugh at due to his lipo paranoia<G>

Gary Wright

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11-11-2014 08:40 PM  3 years agoPost 25
Ace Dude

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USA

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IIRC even some of the early LiPo vendors felt balancing was unnecessary.

  

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11-11-2014 09:38 PM  3 years agoPost 26
wrongler

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Brewerton, New York

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Interesting posts, It seems that different people have different ideas, but everyone is trying to be as safe as possible!

Bill Whittaker

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11-11-2014 10:23 PM  3 years agoPost 27
Sam2b

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Tacoma, WA

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@AKPhill, were the battery cells at 3.85v when they "went up in smoke just sitting there"?

Since lipo batteries are pure chemistry, they are likely to be most volatile while fully charged or near full capacity. That said, I'm pretty sure storing cells at 3.7v or lower can hurt the chemistry also, but may not make them "smoke." Something had to have been pretty wrong to spontaneously go poof without being connected to anything.

Ya gotta know the voltage of each cell for storage (3.85v each). Also it's a good idea to check each cell (balance charger display) once per month to verify cell stability.

_Sam B_

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11-11-2014 10:52 PM  3 years agoPost 28
erikb

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atlanta ga

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lipo storage
Ammo boxes work great

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11-11-2014 11:48 PM  3 years agoPost 29
Ronald Thomas

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Gainesville, Fl, USA

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In a non temp controlled garage is s bad idea. They will deteriorate quickly with the temp swings

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

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11-12-2014 03:05 AM  3 years agoPost 30
gologo

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Sedalia, Mo USA

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Has anyone ever used, are using, one of those small "Sentry" fire safes?
Have been using two of them for my small lipo collection for a few years
now, but have never had 100% peace of mind w. them. Keep thinking they
were designed to keep fire OUT, but what about keeping fire IN????

Moved them out to the garage couple months ago due to a summer house remodel, and kind of wanting to move them back inside, but if there is
anything safer, or just keep them out there.......don't have to worry about
excessive high temps for another 4-5 months........

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11-12-2014 03:52 AM  3 years agoPost 31
gologo

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Sedalia, Mo USA

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Gary , I believe I would be more likely laughing WITH you, than AT you on
the lipo paranoia

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11-13-2014 02:28 AM  3 years agoPost 32
Ronald Thomas

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Gainesville, Fl, USA

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Keeping fire and gasses in = EXPLOSION

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

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11-13-2014 02:46 PM  3 years agoPost 33
Aaron29

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USA

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Hey, I'm told it's rude to expel gasses.

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11-14-2014 12:51 AM  3 years agoPost 34
EEngineer

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TX

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Either that or blow up...

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11-14-2014 12:58 AM  3 years agoPost 35
Retired2011

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Lee's Summit, MO

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^YEP!^
I guess I'm just a rude dude.

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