Welcome to PhantomPilots.com

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

Phantom 2 Vision Invalid Battery Signal

Discussion in 'Phantom 2 Vision Discussion' started by happydogs, Dec 17, 2013.

  1. happydogs

    Joined:
    Dec 12, 2013
    Messages:
    156
    Likes Received:
    0
    Bought Phantom mid-Nov. No problem in any way but did all the updates as recommended. Also recalibrated sticks. It has flown great for two/three days since. But, today, despite full battery charge, it started to sound klaxon and then gave me the Communication With Battery Issue and then Invalid Battery signal.

    I did the reseating of battery, turning everything off and then back on, but still get the invalid battery signal. I have version 1.05.

    Suggestions?
     
  2. urgno

    Joined:
    Nov 18, 2013
    Messages:
    237
    Likes Received:
    1
    Location:
    near Venice - Italy
    clean the battery contacts and check that the small spring contacts on phantom are moving

    one friend of mine has found that raising with a little soldered tin the small round contacts on battery
    add that little extra that help the spring contacts touch better ...

    but of course this is a thing you have to do only if you feel familiar with soldering ;)
     
  3. happydogs

    Joined:
    Dec 12, 2013
    Messages:
    156
    Likes Received:
    0
    i will double clean the contacts...can't touch the soldering though....i could lock up the whole thing in a massive glob of metal! been reading old posts...some also say that they need to "reload the new version" so i might resort to that, too.

    thank you.
     
  4. garygid

    Joined:
    Dec 15, 2013
    Messages:
    294
    Likes Received:
    0
    Location:
    Laguna Hills, Orange county, CA 92653
    As the battery is inserted, the two contact dots on the battery
    should make contact with the two mating spring-loaded
    plunger contacts in the battery compartment of the P2V.
    Since these plungers are said to allow depression of about
    3 mm, in use they should be depressed about 1 to 2 mm
    in order to make good good contact with the battery.

    One member measured his P2V and a battery very carefully,
    and concluded that the tips of the plungers JUST BARELY
    made contact with the battery's dots.

    Assuming this is accurate and typical, perhaps due to a
    manufacturing dimension in the battery which recessed
    the dots too far, or a manufacturing mis-positioning of
    the two plunger contacts, vibration could easily "open"
    the contacts.

    When I get my P2V next week (shipped yesterday), I
    intend to do some careful measuring.
    1. On the P2V, measure (A) from the outside face of the
    battery compartment to the tips of the plungers.
    2. On the battery, measure (B) how far the dots are recessed
    from the protective "collar" around them.
    3. Then, measure the distance (C) from that collar to the inside
    edge of the battery "cap", which touches the outside face of the
    battery compartment when the battery is fully inserted.

    C - B "should be" about 1 mm more than A, for a "solid" contact.
    If A is more than C - B, the plungers will not even touch the dots.
    If they barely touch, the contact could be intermittent.

    Perhaps others could do the same measurements, and report here.
     
  5. Noël

    Noël Guest

    I've heard this 'klaxon" sound two times today, but did not notice the "communication with battery Issue" and the "invalid battery signal" (I was to busy concentrating on the Vision).
    Is the "invalid battery signal" an audio signal or does it show up on the display?
     
  6. happydogs

    Joined:
    Dec 12, 2013
    Messages:
    156
    Likes Received:
    0
    invalid battery signal showed up on monitor (iphone).

    cleaned contacts and then reseated battery. worked fine at first. then, after a couple of minutes of flying, it slowly lost power and landed itself right where it was. i could, temporarily, run the throttle up and make it climb and them move it to a better landing zone, but i only had a little time to do that before it went into auto land by itself, whatever it was over. had plenty of sat signals and this time had no invalid battery sign or anything.

    WTF?
     
  7. Pull_Up

    Joined:
    Nov 5, 2013
    Messages:
    3,684
    Likes Received:
    48
    Location:
    South Oxfordshire, UK
    What's the condition of the battery as reported by the Assistant software? Cells balanced?
     
  8. happydogs

    Joined:
    Dec 12, 2013
    Messages:
    156
    Likes Received:
    0
    i will check that...i do know that, after measuring, it seems the battery contact points barely touch the spring loaded pins.

    just looked and all three cells at max amount.

    while I had the assistant open I also confirmed that all updates have been done.
     
  9. LeoS

    Joined:
    Nov 25, 2013
    Messages:
    747
    Likes Received:
    1
    Can you post your battery's serial number?
    There's gotta be a bad batch in certain serial range.
     
  10. happydogs

    Joined:
    Dec 12, 2013
    Messages:
    156
    Likes Received:
    0
    serial # 1205
     
  11. happydogs

    Joined:
    Dec 12, 2013
    Messages:
    156
    Likes Received:
    0
    flew this am and, for the most part, it worked fine. however, did get the signal of "abnormal communication with battery...please fly with caution" signal on iphone. landed the bird and reseated battery and took off. no problem.

    i think that, lol, i'll duct tape the battery very tightly into its mount and see if this fixes the issue. if it does, i'll tend to think that there is very minor contact with electrodes and that vibration tends to work battery loose just a hair. so, the southern boy duct tape fix might work.