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Old 03-29-2012, 08:34 PM   #1
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Default Lipos puffing, how far till its bad

Not new at all to lipos in general. But I need some help from you lipo veterans. I recently bought 2 crc lipo packs from the marketplace. Both packs are slightly puffed. I want to know if that's ok to keep using them for my "race packs" this upcoming season. They are for my crc gen xl and are the 65c rocket fuel packs. don't know how tight these cells are in the hard case to begin with (as I know lipos usually puff some). since they were purchase used and I have not oven feedback yet, I would like to know if I'm good or should pursue PayPal etc
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Old 03-30-2012, 03:02 AM   #2
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+1 one to this question. Mine started puffing after 3 races. Just need to know when to worry. Got them stored in safety bags though
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Old 03-30-2012, 03:59 AM   #3
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Should not be using them if they are puffed

Get some new packs

If they are under warranty get them replaced

Do you do anything to make them puff ?


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Old 03-30-2012, 04:56 AM   #4
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Which packs do you have? Also should I open a PayPal claim? (bought them used, add Said they were "lightly used"
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Old 03-30-2012, 05:16 AM   #5
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As crusey_aus said,

Should not be using them if they are puffed ( They are damaged and could set fire )

Get some new packs

If they are under warranty get them replaced


If you will post some pictures of the packs. If you dont mind. Tell us what components you are using so we can guess at how much currant is being drawn. If you have drawn too many amps from the pack, that is what would cause the pack too puff. We need to know the C rating of the pack and how many amps was being drawn from it.




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Old 03-30-2012, 05:23 AM   #6
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They are 65c 5600mah packs in my gen xl. I have a havoc 1s in it and a trinity D3 13.5. I highly doubt that setup will pull too many amps from these packs. also I did not puff them, I received them like this. I will post pictures later today.
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Old 03-30-2012, 05:27 AM   #7
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Given the discharge rating of the packs I would suggest that the previous owner had his LVC turned off or set too low and over-discharged them

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Old 03-30-2012, 03:14 PM   #8
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Toss them into your freezer for a few hours that should reduce the puffing. If they puff again they are done.

Drive a larger nail through the center of them and dis-guard them.
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Old 03-30-2012, 09:37 PM   #9
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They aren't so puffed I wouldn't run them, yet. I've read tht as long as you dont over discharge/charge or over draw current they won't puff more. I have had laptop batteries that have puffed then still lasted 2-3 years. I guess that as long as I am careful I can use these as practice packs or something? Or should I not risk it?
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Old 04-03-2012, 06:27 AM   #10
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yup they are dead. get new packs. you won;t be able to fight Ppal either as the proof is on the delivery....not the quality
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Old 04-03-2012, 01:23 PM   #11
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ask the previous owner for a refund.
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Old 04-03-2012, 01:33 PM   #12
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You guys kidding? A lot of packs puff to some degree or another. The term puff is subjective. I may say a battery is puffed just because it does not sit 100% flat on a glass plate while others may say it's completely fine. It beats my why some some manufactures pack their packs so tight to not allow for natural expansion, but just because it has a slight bulge does not mean it's unusable. Anyway, CRC batteries are certainly not immune to "puffing." It's difficult to tell from a description alone, but from what you said and the type of battery you're using it does not seem all too alarming (or unexpected).
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Old 04-03-2012, 01:43 PM   #13
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I use mine until the hard case splits...then it's good bye.
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Old 04-03-2012, 09:50 PM   #14
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well the one is so tight the case has started to crack on the bottom
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Old 04-04-2012, 10:40 PM   #15
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I just saw this, has anyone every tried it.

http://www.youtube.com/watch?v=ZcR8t...eature=related
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