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Battery cell variance is 0.04v too much?

Discussion in 'Pro/Adv Discussion' started by marko1953, Jan 18, 2016.

  1. marko1953

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    Fairly new P3A. Only had about 15 flights. I noticed today the battery cell variance is .04v. The first cell is usually down from the others by .03 or .04. When I saw this today I got worried and landed right away. I have searched on here and elsewhere and found a few references. Some recommend .03 is the limit?
    Others say .02 or .03 is normal. Right now the cells read :4.27, 4.31, 4.31, 4.30
    I have been only going down to 50% power each flight and the battery life is still reading 100%.
    Should I be worried? continue to fly? What would you do. Thanks to all on here for your experience and advice.
     
  2. Ken Hanks

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    No worries, are you using Healthdrones website? Can monitor a bunch of stats on drone performance and flight data
     
  3. Jeff48920

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  4. Ken Hanks

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    Nothing to worry about. Consider using Healthdrones website, it's free and enables you to view battery and flight data. My battery performance screen capture
     

    Attached Files:

  5. marko1953

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    Ok thanks, will have a look at Healthy drones.
     
  6. With The Birds

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  7. marko1953

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    Do you mean "No" don't be worried or "No" don't continue to fly.?
    I loaded some files to Healthy Drones and it shows one major deviation of 0.07v this morning.
    It is in that cell no.1 that tends to read a bit low always.
     
  8. With The Birds

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    I wouldnt worrry.
     
  9. Ken Hanks

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    Been using healthydrones website for several weeks. I can monitor the health of my batteries to include number of times recharged do i can cycle the batteries
     
  10. Traveler

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    My two batteries show cell 1 just under the other three. Perhaps others can post if they too see lower voltages in cell one vs the other 3.
    Either way, these value difference don't appear very concerning in my opinion.
    When they dip and fail to recover I will be concerned.
     
  11. With The Birds

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    Ive got 30 to 40 mv variance on cell one for 4 out of 6 batteries. All fly for 17 to 19 minutes with plenty of reserve and no issues. I dont come in dry.