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What would cause sudden 25% drop in battery?

Discussion in 'Pro/Adv Discussion' started by boludo, Jun 28, 2015.

  1. boludo

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    This is the battery that came with the P3. I was just within 10 feet of me testing gimbal and settings. Battery said 51% so I thought I'd get ready to land it. Immediately low battery 30% came up and seconds later I landed it and took a screen shot of the voltage and battery showing 26%. I'd say 1 minute from 51% to just under 30%. Checked that battery was fully seated and it was. I'm running current firmware and app. [​IMG]


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  2. 30secs

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    That is strange. I had a similar issue once but I was further away and switched to atti.. So I assumed it calibrated what it needs fit a safe return.
     
  3. 4wd

    4wd

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    I've noticed the last few minutes it seems to go down much faster than at the start according to the display.
    That might be a feature of the chemistry.
    It wouldn't hurt to do the full discharge to 8% or less as I think this helps with calibrating the rate of use, and you might get some capacity back.
     
  4. OldFlyer

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    This seems like either an error with the app or the firmware. At 15 volts the battery should show more than 1097 mAH remaining. A fully charged battery is 15.2 volts. Remaining power should be more like 4097 mAH.
     
  5. boludo

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    That was my thought as well. I have the latest firmware on the SD card. This is the first time I have seen it but also the first flight since I updated the app.
     
  6. OldFlyer

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    I think you should try to get one of the US DJI representatives l that view this forum to take a look at this post. If this kind of error happened at a distance it could bring down the P3 for no good reason. It makes me nervous about flying to see this. I think "Blade Strike" might be a DJI rep.
     
  7. bobmyers

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    Yes, get blade strike to weigh in on this-- just a reminder== lipo discharge is not proportional-- the lower the cells get, the faster the charge rate goes down. Fifty percent should take a couple of minutes to degrade to 30%, but not immediately.