Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Results 1 to 9 of 9

Thread: Puffed up LiPo


  1. #1

    Puffed up LiPo

    Probably this question has been asked here before, but I couldnt find it. One of my LiPos puffs up a little bit when charging but then becomes normal when used and discharging. I am sure its not the charger, because I am using the same charger with another LiPo.

    The LiPo in question is a new one and has been used only 4 times. Is it safe to use this, and if so do i have to do any thing to get to be normal?

  2. #2
    aymodeler's Avatar
    Join Date
    Feb 2010
    Location
    Hartland, CT
    Posts
    161
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    I'm no expert, but puffed lipos scare me as that indicates that something has gone wrong in way to damage the structure of the battery (could even have been a manufacturing defect). I know some guys can get over-zealous with lipo safety, and I definitely do NOT consider myself to be in that category, but I do treat them with respect.

    My inclination would be to dispose of it, but if you do continue to use it, I would make sure to both charge and store it outdoors in a fire-safe container.
    Please check out my RC airplane blog at http://alsrcsite.com

  3. #3

    Join Date
    Jul 2007
    Location
    Warner Robins, GA
    Posts
    1,034
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Puffed up a "little" covers a lot of ground!
    If the Lipo is a small inexpensive one, I'd likely dispose of it, rather than risk an expensive model.
    On the other hand, some of the "cheap" small lipos seem to be prone to doing this, and while it's an indication
    of possible problems, seem to continue to function. Perhaps not as well or long, but adequately.
    It's the old risk/reward bit.
    I and others have used "lightly" puffed lipos without problems. Most of the time, we get away with it.
    Occasionally, the results may be spectacular!

  4. #4
    Quote Originally Posted by chuckk2 View Post
    Puffed up a "little" covers a lot of ground!
    If the Lipo is a small inexpensive one, I'd likely dispose of it, rather than risk an expensive model.
    On the other hand, some of the "cheap" small lipos seem to be prone to doing this, and while it's an indication
    of possible problems, seem to continue to function. Perhaps not as well or long, but adequately.
    It's the old risk/reward bit.
    I and others have used "lightly" puffed lipos without problems. Most of the time, we get away with it.
    Occasionally, the results may be spectacular!
    Thanks for that i guess mine would also be in the "lightly" puffed category...will continue to use it with caution.

  5. #5
    I wouldn't use any Lipo that shows any signs that it's damaged or not especially if it's a puffed up Lipo it means something has gone wrong with the chemicals inside and worst can occur if it isn't treated the right way which the only right way for me would be to dispose it and just suck it up and purchase a new Lipo. You don't want to lose a $1000 item for a $50 Lipo or even less. No insurance these days on Rc cars .
    cry cry cry ...

  6. #6
    flyinwalenda's Avatar
    Join Date
    Oct 2009
    Location
    Northeast, PA
    Posts
    2,468
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Need more info.
    What brand lipo, how may cells, and what milliamp rating ?
    What brand and model charger are you using?
    What "C: rating are you charging at or what amperage setting are you using?
    A lipo that swells when charged typically means it's being charged too quickly with too high a "C" rating or amperage. .
    Brian Ray

  7. #7
    Moderator daveopam's Avatar
    Join Date
    Oct 2002
    Location
    ELK CITY, OK
    Posts
    7,051
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Got a few puffy ones myself. How are you guys disposing of them? Also, how are you supposed to legally dispose of them?

    David
    I never want to see a crash. But I don't want to miss one either.

  8. #8
    David you need to fully discharge them there are a number of ways to do so. Search online for ways to discharge a Lipo fully. Some people wire a bulb others just leave it plugged into an old esc. Once a Lipo it's fully discharged all the chemicals inside will be safe to dispose in the garbage can
    cry cry cry ...

  9. #9
    Moderator daveopam's Avatar
    Join Date
    Oct 2002
    Location
    ELK CITY, OK
    Posts
    7,051
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback
    Thanks Re. Will do it that way.

    david
    I never want to see a crash. But I don't want to miss one either.


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 03:37 AM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.