HOW TO: Monitor battery voltage to watch for signs of failure

Discussion in 'Mavic Pro Discussions' started by msinger, Nov 8, 2016.

  1. msinger

    msinger Well-Known Member
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    It's important to monitor the battery voltage in each cell of the DJI smart battery. Be aware of the following:

    1) Monitor the battery to ensure all cells maintain a similar voltage.
    2) Do not allow any of the battery cells to drop below 3.3V.
    3) Consider landing your Mavic when (or before) the first battery cell reaches 3.4V.
    4) Your battery will shut off mid-flight if the voltage drops below 3.0V.

    You can display the voltage of the lowest battery cell on the main screen of the DJI GO application. To do so, enable the "Show Voltage On Main Screen" setting in the "Aircraft Battery" --> "Advanced Settings" section of the DJI GO settings.

    DJI-GO-Monitor-Voltage-1.jpg

    DJI-GO-Monitor-Voltage-2.jpg


    Once enabled, the lowest battery cell voltage will appear at the top, right of the DJI GO application -- like this:

    DJI-GO-Monitor-Voltage-3.jpg


    In the "Remote Controller Settings" section of the DJI GO settings, you can set either C1 or C2 to "Battery Info" to quickly open/close the battery settings.

    DJI-GO-Monitor-Voltage-4.jpg


    Below is an example that shows a battery that has a consistent voltage in each battery cell.

    DJI-GO-Monitor-Voltage-5.jpg


    And, here's an example that shows a damaged battery:

    DJI-GO-Monitor-Voltage-6.jpg


    It's important to ensure your battery is in good health prior to takeoff. Flying with a battery that has one or more bad cells could cause the battery to discharge very quickly and/or your Mavic to shut off mid-flight and drop from the sky.
     
  2. Loppy

    Loppy New Member

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    Great idea, on it.
     
  3. Steve

    Steve Member

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    Thank you for the info!! Awesome job as usual! :)
     
  4. Mako79

    Mako79 Well-Known Member

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    Wow.. Its a 3s. I hope its a proper 3s and not like the p2's dodgy 3x2 config.
     
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  5. gregw

    gregw Well-Known Member

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    The voltage on the top of the screen only shows the total voltage, not lowest cell voltage..
     
  6. kmaluo

    kmaluo Well-Known Member

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    On Android. Hopefully they fix that soon.
     
  7. Anthony

    Anthony Well-Known Member

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    I have added this to my config list ...
     
  8. F6Rider

    F6Rider Well-Known Member

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    I learned this first hand back in my P2 days, when I finished a flight I was messing around forcing it to fly, when it wanted to land due to low battery, (yeah I know). I was only 5' off the grass but the motors just all shut off at once and down she went. No damage but scared the crap out of me, lesson learned, I kept a sharp eye on my battery after that and never had another issue.
     
  9. Zandian

    Zandian Well-Known Member

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    Very helpful guys thanks!


    Sent from my iPhone using MavicPilots
     
  10. Wysiwyg

    Wysiwyg Well-Known Member

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    This is awesome. Thanks for sharing @msinger !
     
  11. PilotMan7700

    PilotMan7700 Well-Known Member

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    Thanks for the tip on how to monitor the batteries.

    For $89 a pop though, you think these batteries would be able to monitor the voltage for you and warn you of an unhealthy cell.


    Sent from my iPhone using MavicPilots
     
  12. msinger

    msinger Well-Known Member
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    DJI GO sometimes shows alerts when battery cells are damaged. It never hurts to double-check yourself before takeoff though.
     
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  13. duelingglove

    duelingglove Well-Known Member

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    Jesus, Mary and Joseph Can you imagine your little dropping dead....from a dead battery. I'm sweating thinking about it


    Sent from my iPhone using MavicPilots
     
  14. raberrio

    raberrio Active Member

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    I am using the mavic for fun on weekends, no flights in the weekdays. Now i have 3 batteries and I store them with 50% of charge, is it ok?
     
  15. msinger

    msinger Well-Known Member
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    Yes.
     
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  16. raberrio

    raberrio Active Member

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  17. SoapyGolem

    SoapyGolem Well-Known Member

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    Hey msinger I have 1 question on this i have two batteries and one battery is volts 12.1 with cells at 4.1..... volts and my older battery is at 11.9 volts with cells at like 3.8, 3.9 so my question is the battery dying? or is this normal? Thanks again
     
  18. stratos

    stratos Well-Known Member

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    As far as I know this batteries can warn you if the health is not good enough to be used , i think I read something about it in DJI website.
     
  19. SoapyGolem

    SoapyGolem Well-Known Member

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    I did notice in the first picture as well your voltage is a 11.3 and your cells are at 3.75 is that battery going out as well? or is it just because the battery is low?
     
  20. SoapyGolem

    SoapyGolem Well-Known Member

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    Yeah i thought so to, just notice different cell life between my batteries... and wondering if i just need to charge them up? or they just go bad
     
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