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#1
06-08-2010
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can lipo's burst
just sold a pack and i got a repot of it being burst!
been doing rc over 20 years and i think i would have spotted that.oh the joys of selling on ebay. 
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#2
06-08-2010
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if they were plastic cased may thats split??
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Mattys the driver,my names carl
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#3
06-08-2010
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They can burst if over charged or over discharged
__________________
dragon paints : team tekin : fusion hobbies :SCHUMACHER RACING : Nuclear R/C for all my sticky and slippery stuff - if it needs gluing or lubing, Nuclear RC is the man!
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#4
06-08-2010
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One went up at the recent TC worlds leading the BRCA Elec TC commitee to make a few changes to the rules for the BRCA nationals.
We all have to use charging sacks now. If charged and discharged incorrectly they will bulge and eventually pop. I've had a (cheap) battery go when charging at over 1C.
__________________
For Custom Decals visit http://www.graphicsbat.co.uk http://www.oople.com/forums/showthread.php?t=62298
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#5
06-08-2010
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Yes, they can...
DCM, in Sweden we have even had reports of LiPos that burt during storage.
According to one owner it was an EFRA approved hard case that was 80 % charged. Others had stored them fully charged. As for LiPos that give in under use: http://i319.photobucket.com/albums/m...wulf5/lipo.jpg http://i319.photobucket.com/albums/m...5/IMG_0049.jpg Photos are from Groovy Drift
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The Tamiya Sheep Various Tamiyas including TRF201 and TRF511
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#6
06-08-2010
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hrmm 1 of mine is starting to bulge a little in a hardcase...
a friends HK cheapo's without hardcase have grown quite a lot and don't hold charge now
__________________
 CML Distribution - Distributors of Quality Radio Control Models & RC Hobby Products
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#7
06-08-2010
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They can burst after a big jump and you stand there watching your whole car disappear in a cloud of smoke...
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#8
06-08-2010
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Quote:
 I've only just got some new lipos, are they safe?
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#9
06-08-2010
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Yes, so long as you follow the regulations on charging/discharging carefully.
I personally don't think the technology is ready yet for such high drain applications. My Lipos are kept in a charging sack in the garage!
__________________
For Custom Decals visit http://www.graphicsbat.co.uk http://www.oople.com/forums/showthread.php?t=62298
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#10
06-08-2010
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Quote:
As for ur Lipo on more than 1s than use ur head and follow the brca guide lines. it users like you who pit others at risk.
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MBModels - Schumacher Racing - Vapextech.co.uk - MRT - Savox - SMD
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#11
06-08-2010
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We all make mistakes which we learn from and can pass on that knowledge to others. In that instance I just forgot to change the charge amps from one battery to another. A little error like that is all that is required to make one of these things go.
I think your reply was a little harsh.  Oh and just to add, a number of leading manufacturers quote that their batteries can be charged at more than 1C. See the first line on the 'Features' for this particular item.... http://www.lrp.cc/en/products/vtec-b...c-74v/details/
__________________
For Custom Decals visit http://www.graphicsbat.co.uk http://www.oople.com/forums/showthread.php?t=62298
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#13
06-08-2010
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Here's the latest guideline published on the EB part of the BRCA site:
http://brca.org/BRCA/elecboard/news/...%20pdf%201.pdf The rumour is that the incident at the 12th worlds was caused by a charger being on the wrong setting. LiPos are safe unless charged incorrectly or overdischarged. But if they are mistreated then they do not always just burst into flames immediately. I have had a couple of packs that got overdischarged (faulty lipo cutoff) and they were fine that day and the next, but two days after it had happened I checked them and they had swollen up massively.
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#14
06-08-2010
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In the end, even when one of the cells go up in the pit, they are still safer than an exploding NiMH cell.....
__________________
dragon paints : team tekin : fusion hobbies :SCHUMACHER RACING : Nuclear R/C for all my sticky and slippery stuff - if it needs gluing or lubing, Nuclear RC is the man!
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#15
06-08-2010
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Tell me about it. I remember one going off at our local track. It's like a shotgun pellet.
__________________
For Custom Decals visit http://www.graphicsbat.co.uk http://www.oople.com/forums/showthread.php?t=62298
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#16
06-08-2010
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I do think that the LiPo cell is inherently safe, as long as it is used within it's safe parameters, where as a NiMH would just go...
__________________
dragon paints : team tekin : fusion hobbies :SCHUMACHER RACING : Nuclear R/C for all my sticky and slippery stuff - if it needs gluing or lubing, Nuclear RC is the man!
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#17
06-08-2010
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well yes they can, but I think you would have noticed
 , so if your an honest chap I think there is a chance this ebayer has shoved them on a charger, not done things as he should and is now tryiing to get his money back. Lipos can swell a bit, you soon notice it with soft case flight packs I had a 6 cell swell a little in a T-rex 500.scared the poo out of me  . But if he is saying they have burst and he wants his money back Hmmmm
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Dave  www.norfolkbuggyclub.moonfruit.com kyosho optima,Bosscat,Boomerang,,RB5 Vega,RB7,,RC12 5.2, TLR22-4,MP9,HB807T Flask of tea & a rollup Anglia model centre & CT Models http://www.oople.com/forums/showthread.php?t=28117
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#18
06-08-2010
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I'd be asking for an image of this 'burst' pack!
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#20
06-08-2010
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Quote:
__________________
MBModels - Schumacher Racing - Vapextech.co.uk - MRT - Savox - SMD
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