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P3 Batteries

Discussion in 'Pro/Adv Discussion' started by DaleM, Nov 8, 2015.

  1. DaleM

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    Hey guys
    You can set your P3 batteries to self discharge after so many days that I get but is there Any way to see if they are in the discharge mode? Lights flashing? Or something?
    Thanks
    Dale
     
  2. Drone_on

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    I don't think you can actually see it happen via the lights however just push the button and it will give you the status via the lights depending on how you have them set in the app 7, 10 days etc.
     
  3. suck it up

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    Just so you know, every time you push the button it resets the discharge time to zero. So if you have the setting at 5 days and you push the button after 3 days the timer will restart at 5 days.

    It does work, don't push the F...ing button...............
     
  4. msinger

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    No.
     
  5. Jbundy63

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    LOL I didn't know that. Good to know! Thanks for posting.
     
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  6. tcope

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    Does anyone know how the batteries discharge themselves?
     
  7. John Locke

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    Well, there's about 6 ICs and another 6 or 8 high powered diode or regulators on the internals of each battery. They are actually quite sophisticated. When DJI says they are intelligent, they mean it. What other brand tells you the exact voltage of each cell down to a hundredth of a volt, and how many times it's been charged, along with equalizing all 4 batteries in series without the extra equalization wires required on other drones? You even get to program each battery, telling it when to start discharging itself if accidentally left in storage too long, from 2 to 10 days to trigger discharging. Really cleaver stuff.

    Take a look at the pictures below. This shows the internals, and what's in store if you decide to fabricate a multi-battery setup like others have been doing, hanging two more 1300mah batteries external on the P3 landing gear, or other means. By the way, it's not easy getting the top plastic cover off the battery, but if you work at it, it will pop off eventually, exposing the fat wires on the power connector. That's where you need to solder wires to route externally to other batteries, very carefully.

    Bottom.jpg L side.jpg

    side.jpg
    top.jpg
     
    #7 John Locke, Nov 16, 2015
    Last edited: Nov 16, 2015
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  8. MattyDread

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    Thanks for sharing - I can appreciate now why they cost as much as they do.
     
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