Critical battery damage?

Discussion in 'ALTA' started by Ronald Weaver, Jun 24, 2016.

  1. Ronald Weaver

    Ronald Weaver New Member

    Sep 11, 2015
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    Hey guys!

    So, I loaded a couple freefly 10,000's on the Alta yesterday. I didn't notice that they were wedged against the road in the hole screws and I secured them tightly with the rubber bands. After the flight I noticed the screws had caused some damage to the corner of the batteries (very similar on both). It didn't cause a depression or indentation, just a surface scratch that exposed the insides a tiny bit.

    Can I use plastic and/or electrical tape to save these batteries or are they now too much of a hazard to fly?? I've got a big gig at USC on Tuesday and need a couple set and might have to go buy an alternative. Damn... (yes, I bite my cuticles) freefly battery damage .jpg freefly battery damage 3.jpg freefly battery damage 2.jpg
  2. Steve Maller

    Steve Maller UAV Grief Counselor

    Oct 30, 2012
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    How familiar are you with the various measurements you can make using a smart charger with your LiPos? Things like internal resistance, etc?

    What I would do (and I'm no expert) is if the batteries make it through a charge/storage/charge cycle on the charger (be careful to place them in a safe location) and their numbers compare favorably to a healthy battery, then I'd go ahead and use them.

    I would take caution to completely cover the open areas and make sure you do so with some kind of non-conductive tape.

    Obviously the safest thing would be to retire them, but at $200 or more each, that's a tough pill to swallow.

    I'm sure others will have an opinion. Probably more informed them mine. :)
  3. rosauro o

    rosauro o New Member

    Dec 20, 2015
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    It's simple...

    Cost of your machine/payload VS cost of a replacement battery.
  4. Chris Jackson

    Chris Jackson New Member

    Dec 5, 2015
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    It doesnt look like the cell is damaged from the pics, just the heatshrink. If the cell isnt punctured, re-heatshrink the pack and continue. If it is damaged, scrap it.
    Stefan Helborg likes this.
  5. Andy Johnson-Laird

    Andy Johnson-Laird Administrator
    Staff Member

    Jul 31, 2012
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    Or as Dirty Harry would say, "Do you feel lucky today? Do ya?" :)

    Chris Jackson's advice applies, but be careful, very careful!


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