Welcome to PhantomPilots.com

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

Battery Life has dropped to 98%

Discussion in 'Standard/4k Discussion' started by mark p3s, Mar 14, 2016.

  1. mark p3s

    Joined:
    Oct 15, 2015
    Messages:
    22
    Likes Received:
    3
    Battery Life has dropped to 98% not the charge level but the actual battery life. I know its still pretty healthy and nothing to worry about yet but at what level dos this become a concern 80% 70% 60% ? Battery has had 8 charges and total flight time of 3hrs since October ( don't get much flights in during a Scottish winter )

    Any help would be much appreciated on this. Thanks
     
  2. Mark The Droner

    Joined:
    Aug 26, 2015
    Messages:
    3,973
    Likes Received:
    1,160
    Location:
    Brookeville, MD, USA
    IMO, from what I've read on here the past six months, when the battery life is in the mid 80s you really need to keep a sharp eye on it. And when it hits 80 or goes below that, it's probably on its last legs.
     
  3. Tony Cowan

    Joined:
    Jan 8, 2016
    Messages:
    1,115
    Likes Received:
    283
    That's why important to do the deep discharge of battery to preserve as long as you can.


    Sent from my iPhone using PhantomPilots mobile app
     
  4. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,239
    Likes Received:
    1,613
    Location:
    Palm Beach Co.- FL
    Deep discharge is not part of a LiPo maintenance plan.

    It may reset some DJI calculation but has nothing to do with battery longevity.
     
    250Flyer and LK8472 like this.
  5. AngryBird

    Joined:
    Feb 1, 2016
    Messages:
    192
    Likes Received:
    55
    Location:
    Lithuania
    What could happen if battery life is below 80%? Sudden voltage drop during flight? Aircraft`s motors won`t start? Very short flying time?
     
  6. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,239
    Likes Received:
    1,613
    Location:
    Palm Beach Co.- FL
    #'s 1 & 3.
     
  7. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    18,921
    Likes Received:
    5,573
    Location:
    US
    I've read a lot on this topic. All it seems to do is attempt to re-balance the battery cells.
     
  8. LK8472

    Joined:
    Feb 8, 2016
    Messages:
    122
    Likes Received:
    32
    Location:
    SWFL
    What is the lowest life % you've seen? My two are at 92 & 96 respectively.

    Also yeah I agree that the 8% "deep discharge" every 20 cycles goes against everything I know about lipo chemistry.

    Sent from my iPhone using PhantomPilots mobile app
     
  9. dg8882

    Joined:
    Feb 15, 2016
    Messages:
    292
    Likes Received:
    52
    I have 9 and a half hours of flight time and 25 charges on my battery, it is at 94% life. That does seem to be proportional with marks battery. So could it be normal, or are we just treating batteries the wrong way?
    Could the battery sitting in a cold stock room for months from where I bought the drone from cause it to degrade any faster?


    Sent from my iPhone using PhantomPilots mobile app
     
  10. mark p3s

    Joined:
    Oct 15, 2015
    Messages:
    22
    Likes Received:
    3
    Yeah You have to wonder how they manage the batteries when these things are sitting in warehouses or even sitting in the shelf in the shops that keep a large stock of drones. I mean when you think how much time could be between the battery being made by DJI, shipped to a dealer, sits on the shelf for so long then finally someone buys it. Thats another thing i was thinking about how long are the can the dealers have a Phantom 3 for example sitting on the shelf ? Surely if it docent sell within a certain amount of time they would need to think about opening it up and replace the battery ?

    Only thing i am guilty of is my battery has not been down past 40% most winter, just because whenever i did get the chance to use it i knew it would be getting put away again for another while so i would only run the battery down to 50%-40% to store it for a while but i have never stored it fully charges or let in drop ( when i storage ) lower than 25%.

    Does anyone think the P3 battery may come down in price at all now there is a new P4 battery ?
     
  11. Mark The Droner

    Joined:
    Aug 26, 2015
    Messages:
    3,973
    Likes Received:
    1,160
    Location:
    Brookeville, MD, USA
    In this hobby, it seems to me everything comes down in price very rapidly.
     
  12. mark p3s

    Joined:
    Oct 15, 2015
    Messages:
    22
    Likes Received:
    3
    Tell me about it ! Im really kicking myself for buying my P3S back in September when i see the price of them now ! Plus I have barley used it due to the weather and now my batteries showing wear ( slightly ). But you live and learn, Im not very good at waiting for things when i decide i want them and convinced myself i would get some amazing winter footage !
     
  13. AngryBird

    Joined:
    Feb 1, 2016
    Messages:
    192
    Likes Received:
    55
    Location:
    Lithuania
    That would be great. Now 150 euros for battery is expensive. It`s 1/4th the price I paid for P3s!
     
  14. 250Flyer

    Joined:
    Dec 1, 2015
    Messages:
    274
    Likes Received:
    26
    Location:
    United Kingdom
    Please stop giving bad advise... You a noobie yourself
     
    LK8472 likes this.
  15. dg8882

    Joined:
    Feb 15, 2016
    Messages:
    292
    Likes Received:
    52
    I'm really hoping the battery is just not so great since it was sitting in s back room for all of winter. I'm under 18 and can't get a job yet, so I don't have the money to keep buying batteries. I am hoping to pick up another battery by the end of the month.


    Sent from my iPhone using PhantomPilots mobile app
     
  16. LK8472

    Joined:
    Feb 8, 2016
    Messages:
    122
    Likes Received:
    32
    Location:
    SWFL
    Similar stats for my batteries. This maybe normal. I also use Healthy Drones to check battery info, seems they are still performing well.


    Sent from my iPhone using PhantomPilots mobile app
     
  17. dg8882

    Joined:
    Feb 15, 2016
    Messages:
    292
    Likes Received:
    52
    I will need to check that out.
    I have also noticed my flight times are lower than they were when I first got my drone. When the battery was fresh, I was getting 24 minute flights, now I'm barely getting 20.


    Sent from my iPhone using PhantomPilots mobile app
     
  18. Mark The Droner

    Joined:
    Aug 26, 2015
    Messages:
    3,973
    Likes Received:
    1,160
    Location:
    Brookeville, MD, USA
    I hope you're not pushing your battery like that for most flights
     
  19. LK8472

    Joined:
    Feb 8, 2016
    Messages:
    122
    Likes Received:
    32
    Location:
    SWFL
    Yeah I usually end my flights somewhere between 30%-40%. Rarely do I ever get to my 30% warning and when I do I bring it home immediately. Only time I got below 20% is intentionally for the DJI recommended reset