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How do I discharge my P2 batts?

Discussion in 'General Discussion' started by spitfire44, Apr 24, 2014.

  1. spitfire44

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    I am not going to fly my P2 for the next 2 -3 weeks. How do I discharge 3 fully charged batts for storage during this time?

    thanks,

    Eric
     
  2. mcmax20

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    Wire up a 12v female cigarette socket and stick a 5v usb charger in there, then use them to charge any of your other devices. You'll have to turn the battery on to make the power flow.

    Side note: anyone with the 3 battery charging boards (i have one on the way), can you use them in reverse? Drawing power from the charging end or would there be too much amperage? I need to do some testing on this...
     
  3. Great Pumpkin

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    You need only discharge about 50%. You can do that in about 10 minutes of flying.
     
  4. npalen

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    .....and if you can't fly just put some weight on the landing gear to hold the craft down and then power up. Put some power to it, with the props installed, and discharge the battery. Can do this indoors in a safe area.
     
  5. Gizmo3000

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    use it as an excuse to fly around and practice doing circle 8's and stuff until they're around half discharged.
     
  6. spitfire44

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    Thanks for the advice. What's the polarity for the batt? Are there any male connectors available for this set up?

    Eric Halberstadt
     
  7. canadavenyc

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    Is this really safe to do? Wouldn't it have a chance of burning out the motors? Sorry, I'm very naive about motors and such.
     
  8. npalen

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    The air from the props cools the motors but you can check the motors occasionally for heat. Don't have to run the motors full throttle constantly. Just be sure to put plenty of weight on the landing gear for safety.
     
  9. genisis

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    Very interesting topic, I never knew their was a requirement to partially discharge p2v batteries when not in use, here in Scotland there could be a few months in winter where drone could not be used, does anyone know long term storage of batteries
     
  10. AnselA

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    A good (long) article about LiPos, also storage aspects: http://www.rchelicopterfun.com/rc-lipo-batteries.html