Welcome to PhantomPilots.com

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

Flight Time

Discussion in 'Phantom 2 Vision + Discussion' started by canerakcil, Jul 2, 2014.

  1. canerakcil

    Joined:
    May 9, 2014
    Messages:
    30
    Likes Received:
    0
    I am a new vision+ owner and as a phantom v1 owner most parts of the craft familiar to me. But i have some questions about battery to experienced P2V+ owners..

    I have 2 batteries and have tested 2 times each one and see 16-18 minutes of flight time until %20 remains. As it has mentioned that up to 25 minutes of flight time, i want to ask is there any problem with my batteries?

    - Is this flight time normal or should i do something to increase the flight time?
    - As i use the batteries 2 times only, does the battery performance increase after couple flights?
    - At what level do you usually land it? Should i scare when it is below %20?



    Thanks,
     
  2. Gatordent

    Joined:
    Jul 2, 2014
    Messages:
    30
    Likes Received:
    0
    You should see a slight increase in battery life as you cycle the batteries discharge/recharge. If you are flying in significant wind this may also cause a drop in flight time.
     
  3. Sasquatch

    Joined:
    Jun 7, 2014
    Messages:
    242
    Likes Received:
    0
    Location:
    Ontario, Canada
    There is no problems with your batteries. The 16-18 min flight times you're getting is typical and if not pushing the threshold of your battery warning alarms. The first warning will sound at 25% power and the second at 15%. If you were to continue flying during these times/warnings, you'd probably get another 7-9 minutes. It comes down to whether or not your are comfortable enough and have enough confidence in the technology to push your bird to those limits. ;)
     
  4. canerakcil

    Joined:
    May 9, 2014
    Messages:
    30
    Likes Received:
    0
    Thanks man, i have stopped the craft at %20 battery level at my tests. If i use another %10 i think it will add another 2 minutes (first %80 make 18 minutes 18/8 will give me how much time will it survive with %10 battery if it discharges at the same rate)..That makes 20minutes overall.

    I think 10m/s winds reduced the time...I will keep testing it when there is no wind and see weather how much increases the flight time.
     
  5. Sasquatch

    Joined:
    Jun 7, 2014
    Messages:
    242
    Likes Received:
    0
    Location:
    Ontario, Canada
    Yes, wind can have an effect on the battery life because the motors are working harder at times to compensate. It also depends too on how hard or aggressively you're flying; higher speeds, throttling up hard and fast a lot etc. Personally, I wouldn't risk running the battery down to 10%, but that's just me.
     
  6. canerakcil

    Joined:
    May 9, 2014
    Messages:
    30
    Likes Received:
    0
    I fly it around 7-8m/s speed in GPS mode.

    I will try the below settings in order to see if the flight time increase, if you tried those can you share your experiences?

    * GPS vs ATTI mode--> GPS mode always do corrections when flying, do you think selecting ATTI mode increase the flight time(if i fly at same speed)?
    * Recording video vs not recording (just fpv viewing) --> Does recording reduce the time?
    * Hovering vs flying around --> Too much hovering affects to the flight time?
     
  7. midwestjeff

    Joined:
    Apr 17, 2014
    Messages:
    103
    Likes Received:
    0
    I tested each of my batteries to make sure they are were performing the same because I kept feeling like my flight times were vastly different and shorter then they should be.

    I went to my friend's huge indoor garage and tested each of my 4 batteries... 68 degrees, zero wind. Each test flight I was getting around 18 minutes when it hit 25% warning and for one battery I let it go down to 5% and I was at 23 minutes. So I agree the 25 minute is possible but in reality you should get about 14-16 minutes if you are flying fast the entire flight and sometimes less on a windy day. The wind does require a lot more power to compensate.
     
  8. DownunderPhantom

    Joined:
    Jun 27, 2014
    Messages:
    173
    Likes Received:
    0
    Location:
    Grafton, New South Wales, Australia
    The problem with all this is that the description on the packaging is misleading, it says "intelligent Flight Battery and 25 minute flight time"
    The flight times may be attainable on the Phantom 2 (no camera or gimbal) but when the packaging says 25 minutes, it should be that right out of the box.

    The wording they should have used is "Up to 25 minutes flight time". Everyone who has purchased a Phantom and who has never reached 25 minutes flight time should take
    their Phantom back and demand a new model until they actually do receive one that can fly for 25minutes.

    In Australia it is illegal to say a product can do something when it can not.

    Products must also:

    match descriptions made by the salesperson, on packaging and labels, and in promotions or advertising
     
  9. Sasquatch

    Joined:
    Jun 7, 2014
    Messages:
    242
    Likes Received:
    0
    Location:
    Ontario, Canada
    I do agree, DJI is being a little misleading with their advertising about flight times (out of the box) and depending on conditions, battery etc., but they have covered their asses...

    On their website when you click on the 'comparison' link, it says; "Max flight time is 25 mins." The wording is basically saying the same thing and with DJI claiming a "maximum flight time is 25 minutes", is no different than "up to 25 minutes" of flight time.
     

    Attached Files:

    • DJI2.png
      DJI2.png
      File size:
      348.8 KB
      Views:
      110
  10. DownunderPhantom

    Joined:
    Jun 27, 2014
    Messages:
    173
    Likes Received:
    0
    Location:
    Grafton, New South Wales, Australia
    This is all well and good but if a person walks in off the street and sees only the wording on the packaging and makes a decision to purchase because of that description, the purchaser has been misled.
     
  11. Brettly

    Joined:
    Jun 24, 2014
    Messages:
    112
    Likes Received:
    0
    Location:
    Sydney,Australia
    Yea its a tough call, but that person would be considered slightly gullible. I don't know, but pushing it all the way to its limits could achieve 25mins :?:
     
  12. Dirty Bird

    Joined:
    Apr 15, 2014
    Messages:
    0
    Likes Received:
    9
    Location:
    Glen Burnie, MD - USA
    Its kind of funny in a way seeing people complain about having "only" 20 minutes of flight time.

    I have some aircraft that get FOUR MINUTES and you are pushing it at that! ;)
     
  13. Brettly

    Joined:
    Jun 24, 2014
    Messages:
    112
    Likes Received:
    0
    Location:
    Sydney,Australia
    Fosure. Even 20mins of complete focused attention on flying would be ok with me. Just land and throw another battery in er.:)
     
  14. M.Tigelaar

    Joined:
    May 27, 2014
    Messages:
    449
    Likes Received:
    3
    Location:
    The Netherlands
    Just land and put in the next battery. :D
    My vision (non plus) took 20 minutes, but i like the gimbal of the vision plus :mrgreen:
     
  15. DownunderPhantom

    Joined:
    Jun 27, 2014
    Messages:
    173
    Likes Received:
    0
    Location:
    Grafton, New South Wales, Australia
    I have no problems with flight times either, with my P1 (no camera) I can stay aloft for about 13 minutes, with camera 8 1/2 minutes. P2VP between 15-18 minutes which I am over the moon about, what I do not like is when companies say their product can do something which they can not, that is false advertisement.
     
  16. Phantom_Menace66

    Joined:
    May 8, 2014
    Messages:
    469
    Likes Received:
    2
    Location:
    Perth, Western Australia
    Isn't the 'auto land' function triggered at 15% battery? How would one run them down to 10%?
     
  17. Michigan_PI

    Joined:
    May 16, 2014
    Messages:
    176
    Likes Received:
    0
    Location:
    Detroit, MI
    The alarms are programmable. Keep in mind that it is not "heathy" for the batteries to be run lower than 20% and you can damage the cells. I have been seeing posts lately about "swollen" batteries which very well could have been caused from running them too low.
    Yes, I know DJI recommends running them low periodically but keep in mind who sells the only approved battery for the Phantom 2 Vision.
    I have run my batteries lower than 20% on occasion but I try not to. Also, I have my 2nd alarm set at 18%
     
  18. Dirty Bird

    Joined:
    Apr 15, 2014
    Messages:
    0
    Likes Received:
    9
    Location:
    Glen Burnie, MD - USA
    The bird starts to descend when the second alarm is reached, but you can override it by holding the left stick up at 90-100% lift.
     
  19. Mori55

    Joined:
    Feb 13, 2014
    Messages:
    1,993
    Likes Received:
    6
    Location:
    NJ-USA
    Yeah maybe 25 min if you just sit there and hover and push the battery to the limit, so yes technically that's true.
    I'm happy with my flight time. I'm ready for a brake after 18 - 20 min.
     
  20. gilmbento

    Joined:
    Jun 19, 2014
    Messages:
    56
    Likes Received:
    0
    20 minutes here high strong winds . It's ok to me