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Puffed lipo by shorting?
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ReV:-O
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Puffed lipo by shorting? - 09.12.2008, 01:15 PM

Hi guys,
I got a Neu 3s 5000mah lipo the other day. I was soldering deans to it and accidently touched the two wires for a split second. it made 3 sparks. Basically i am asking if i have ruined my new lipo. i think it has puffed a bit but it could be my imagination.

many thanks
   
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E-Revonut
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09.12.2008, 01:20 PM

very well could have damaged it. I don't have any first hand experience but from what I've seen on here a quick touch generally doesn't damage them.


RC-Monster RC8T 1515 2.5D/MMM/5s RC-M 4500mah
SC10 MMPro 13.5T 2s NeuEnery 5000mah
RC18T Mamba 25/5400kv 2s lipo + 6s NiMh
   
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Arct1k
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09.12.2008, 01:26 PM

If only for a split second you should be fine - Remember the spark you get when you first plug in a battery to an ESC - This is like a short as the Caps soak up the voltage very quickly.

I'd be suprised if you've puffed it - Check your voltage on all cells. Post up a picture...

But be careful! Not worth buring the house down...

Dupe post -

http://www.rc-monster.com/forum/showthread.php?t=14988
   
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09.12.2008, 02:01 PM

Quote:
Originally Posted by Arct1k View Post
If only for a split second you should be fine - Remember the spark you get when you first plug in a battery to an ESC - This is like a short as the Caps soak up the voltage very quickly.
http://www.rc-monster.com/forum/showthread.php?t=14988
the caps soak up the voltage very quickly... but when i shorted it the cells must have absorbed the voltage
   
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09.12.2008, 01:38 PM

again sorry for the dupe post. you can delete the other one or wotever lol. i'll try and get a pic of it. i actually bought 2 of the same lipos, so this is why i think it is puffed because it feels squishy on top and the other one is solid.
   
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Arct1k
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09.12.2008, 01:49 PM

What charger / balancer setup do you have - does it have built in volt meter? Do you use a lipo sack?
   
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09.12.2008, 01:53 PM

these are brand new batteries. never been charged or used. im new to electric so im not really sure what is considered a puffed lipo. ive taken some pics so i'll try and upload them
   
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09.12.2008, 01:58 PM

the 'puffed' one is on the left...





   
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09.12.2008, 02:36 PM

any thoughts? i know the pics arnt very clear. should i send it back to Neu? they sed i could, but im not sure if it is considered puffed. it just feels squidgy and the other one feels solid.
   
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jayjay283
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09.12.2008, 02:45 PM

Send it back Rev:-o, I gather from your posts on Traxxas you dont have a esc, motor or truck yet, so you have some time. If Neu said they'ed take it back, send it back and consider it lesson learned
   
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09.12.2008, 02:47 PM

i think i'll take your advice jayjay. the only thing is ive soldered deans to it. but if they ask i can just say the shop i bought it from did it for me. www.flydma.com do it anyways
   
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Electric Dave
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09.12.2008, 05:06 PM

It doesn't look puffed to me. I'd run it!
   
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Arct1k
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09.12.2008, 05:14 PM

What charger / balancer setup do you have - does it have built in volt meter? Do you use a lipo sack?

What are the voltages on each cell?
   
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09.12.2008, 06:30 PM

Quote:
Originally Posted by Arct1k View Post
What charger / balancer setup do you have - does it have built in volt meter? Do you use a lipo sack?

What are the voltages on each cell?
i have the hyperion duo charger. i do have a lipo sack but i'm afraid to connect it up to the charger incase it blows up or something!
im pretty sure it definitly is puffed. it is very squidgy (the pics dont really show it up), compared to the other lipo which is not squidgy at all. i'll see if i can hook up the battery just to find out the voltage, but id rather send it back and get a new one if i can. but since i am new to electirc im not really sure what is concidered puffed. because i think it is puffed but i could send it back and they could say its hardly puffed at all and get annoyed. how many more millimeters (approx) is a puffed lipo suppost to increase by? if that makes any sence lol
   
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entjoles
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09.12.2008, 05:31 PM

it should be fine , i have done the same thing
   
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