Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Bad batteries: Is anyone tracking serial numbers?

Discussion in 'General Discussion' started by beeline, Aug 27, 2014.

  1. beeline

    Joined:
    Jun 17, 2014
    Messages:
    309
    Likes Received:
    53
    Location:
    North Alabama
    Maybe there was a bad manufacturing run that could be narrowed down by tracking serial numbers, or has this been done?

    Do batteries with the round connection pads fare worse than ones with the square pads?

    Has anyone actually gotten anywhere near 300 flights from one of these overpriced time bombs?

    As a group, if we could find a pattern of failure, it stands to reason DJI would feel at least some pressure to do the right thing and replace the bad batch. They certainly have made a wad of cash on them.

    I've yet to be bitten, but I'm quickly approaching end-of-life on mine (almost 20 cycles) :p
     
  2. stodsy

    Joined:
    Aug 10, 2014
    Messages:
    7
    Likes Received:
    0
    I purchased a new DJI battery with 0% life. Given I'm in Australia DJI is reluctant to send out a new battery from Hong Kong. Instead they've offered to remotely connect to my pc and update the End of Life counter via the assistant software. They're obviously unwilling to brief me on how to perform this task as it'd allow me to reset the counter once it expires.
     
  3. Morgon

    Joined:
    Aug 15, 2014
    Messages:
    453
    Likes Received:
    64
    Location:
    Glen Burnie, MD
    Make sure to screen record the session with keystroke logging, then. :)
     
  4. locoworks

    Joined:
    Jul 4, 2014
    Messages:
    471
    Likes Received:
    10
    does that mean the battery is limited to X amount of charges electronically whether the battery is holding a charge or not??
     
  5. beeline

    Joined:
    Jun 17, 2014
    Messages:
    309
    Likes Received:
    53
    Location:
    North Alabama
    By cycles I meant charge cycles (being facetious?).

    Thanks, Geert, I'll check out that thread.

    Edit: OK, scanned the above thread and I see nothing in regards to tracking serial numbers (although most other details have been documented). Also, there doesn't seem to be any conclusive finding as to what is causing the failures.

    So, I'm wondering if we are barking up the wrong tree. A bad cell manufacturing run looks plausible to me and tracking serial numbers of failed units would be key to determining this.
     
  6. BWJ

    BWJ

    Joined:
    Aug 19, 2014
    Messages:
    144
    Likes Received:
    0
    Location:
    Denmark
  7. beeline

    Joined:
    Jun 17, 2014
    Messages:
    309
    Likes Received:
    53
    Location:
    North Alabama
    Oh no, dirkclod, I meant my original comment about the battery approaching end-of-life with almost 20 change cycles. I was being facetious, not you! Sometimes I get tangled up in my words. And was referring to drawing the battery down to 20-30%. Not sure if 8% is really a good idea or not..
     
  8. mikeboruta

    Joined:
    Dec 5, 2013
    Messages:
    41
    Likes Received:
    1
    Location:
    Ouray, Colorado
    For what it is worth, I have two swollen and un-trustworthy batteries that came with my P2V purchased in December 2013. Both batteries have about 20 cycles and the Assisstant software states that they both have more than 90% life. One of them has caused very early auto-landing (more like auto-crashing) problems. DJI will not replace them because they say the battery warranty is only 3 months. They both have the older round connector pads. The serial numbers are:

    DJ070013112221171
    DJ070013112628184
     
  9. beeline

    Joined:
    Jun 17, 2014
    Messages:
    309
    Likes Received:
    53
    Location:
    North Alabama
    With less than 20 charges each, my batteries are not swollen and have given me no problems (yet). Anecdotal evidence at best at this point.

    DJ070014050531102
    DJ070014051908432

    Maybe others with serial numbers similar to mikeboruta have had issues?
     
  10. testtrack81

    Joined:
    Jul 31, 2015
    Messages:
    2
    Likes Received:
    0
    I bought 2 batteries a year ago; 1 has swelled. The bad battery shows 94% life left. It's flight days are over.

    Battery 1 (good battery) SN #3004
    Battery 2 (bad battery) SN #34698