Welcome to PhantomPilots.com

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

A Wind Speed Question and a Battery Question

Discussion in 'Phantom 2 Vision + Discussion' started by FreeFlyer, Sep 2, 2014.

  1. FreeFlyer

    Joined:
    Aug 27, 2014
    Messages:
    22
    Likes Received:
    0
    Hi, let's put it simple:

    1) How much wind speed can resist the Phantom 2V+ to fly safe? (Please answer in Km\h if you can)

    2) How long can the batteries stay full charged before use? I have full charged both my batteries and, due to weather condition, i could not fly the Phantom for 2 days (today included).

    Thanks before and sorry for the bad english.
     
  2. FreeFlyer

    Joined:
    Aug 27, 2014
    Messages:
    22
    Likes Received:
    0
    Whoa... i've asked something very stupid or something that can't be answered? XD
     
  3. slothead

    Joined:
    Jun 14, 2014
    Messages:
    485
    Likes Received:
    2
    Location:
    Frederick, MD, USA
    (1) The windspeed question is not easy to answer because windspeed is never constant. I wouldn't go up in a wind of more than 20km/hr because I know that it could gust to 30-35, and I think that is too much to have to deal with (eats up battery life more quickly). I prefer to deal with calm days, but there aren't many of those around here these days.

    (2) I have kept batteries fully charged for a week, but I know that isn't a good idea because the memory characteristics of the battery chemistry design will cause it to think its full charge is less than it really is (and show a low charge sooner during a flight).

    My $0.02
     
  4. happydays

    Joined:
    Jul 5, 2013
    Messages:
    1,845
    Likes Received:
    655
    Location:
    Warrenpoint, Ireland
    Also wind speeds aloft are much higher than on the surface usually.

    I have had batteries fully charged and kept in the case for a few days, but usually I store them at 50%. I can't see any harm in having them full for a few days, but then again, what do I know!
     
  5. FreeFlyer

    Joined:
    Aug 27, 2014
    Messages:
    22
    Likes Received:
    0
    @slothead: I know that the Wind Speed can change in any moment and what i wanted to know is just what you have wrote. I fly within your same parameters and i'll keep do it. Thanks... ;)

    @happydays: Thank you too for the advice! ;)
     
  6. rbhamilton

    Joined:
    Aug 30, 2014
    Messages:
    539
    Likes Received:
    13
    Phantom can fly at 15m/s so about 33mph although that's not really recommended for an extended period. In a theoretical way, I guess if your drone had a good satellite lock and the wind was unnaturally constant - say in a wind tunnel - you could fly in a 30 mile per hour wind with the drone on max leaning into the wind.

    Are you thinking about becoming a storm chaser? If you don't care about your drone being able to return you could fly in higher winds then drive to where it ends up being blown. I don't know if you could keep the drone aloft if the wind got too high. I've never had mine flip over while in the air and I'm not sure if it can right it's self. Structurally the case will hold together through almost anything but the blades are not all that strong and the camera/gimbal is a bit on the flimsy side so landing in an extremely strong wind would be a problem.

    From a more practical perspective I don't think I'd fly in anything more than a mild breeze. 5 - 10 mph would be about as much as I'd want. You need the ability to maneuver and you don't want to be constantly fighting the wind as you line up shots. Not to mention the danger of being pushed into an obstruction.

    I've had my drone down for repairs for a month and the batteries seemed to hold a charge the whole time although I did do a top-up before I headed out.
     
  7. Panamon Creel

    Joined:
    Jul 31, 2014
    Messages:
    229
    Likes Received:
    0
    Location:
    Central Mexico

    storing LiPo batteries fully charged few days or some weeks is not a big problem. LiPo batteries lose capacity/age faster if stored fully charged however it is something like 15-20% capacity loss over a Year period at room temperature vs. 2-8% for a 50% charged one over the same year period stored at the same temperature therefore the capacity loss difference over a short period is only marginal. You can also put your LiPo batteries in the fridge for the time period which also reduces the aging/capacity loss over time, just make sure that you let the batteries warm up before using them.

    Edited percentage values
     
  8. FreeFlyer

    Joined:
    Aug 27, 2014
    Messages:
    22
    Likes Received:
    0
    Thanks to all for replies! ;) This forum is GREAT! ;)