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battery charge

Discussion in 'General Discussion' started by hipster2014, May 29, 2014.

  1. hipster2014

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    OK, I'm stumped. I have two batteries and charged them both yesterday - each on the charger for approx 4 hours. Today?....not enough juice in either one to boot up the copter. What is going on?
     
  2. Ozzyguy

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    Ok what phantom do you own. Also check the voltage with a multimeter and let us know the voltage afte 4 hours on the charge
     
  3. N017RW

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    How many flights on them?
     
  4. hipster2014

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    I've got the Phantom FC 40.

    There are NO flights on these batteries, they are brand new....I've merely started the motors numerous times trying to effect a maiden flight (but have run into various problems that have so far precluded that).
     
  5. hipster2014

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    It appears that after 4 hours of charging, I have 5.37v
    (The battery is marked: 2200mAh / 11.1v / 20c )
     
  6. N017RW

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    I'm not familiar with the specifics of DJI's balance charger but most LiPo chargers will not charge a 3S pack if it is below some where around 9v.

    You can Google ways to try and resurrect them if in fact they are over-discharged.
     
  7. Ozzyguy

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  8. hipster2014

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    OK. Thanks all for the advice.
     
  9. Ozzyguy

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    I discovered the above trick when I received a turnigy that was flat below 9 volts
     
  10. deltamike

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    Just a thought - have you calibrated your batteries on the Naza assistant?
     
  11. Ozzyguy

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    He wont be able to connect to the naza assistant without any power.
     
  12. deltamike

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    I don't understand. Surely all he has to do is connect the batteries to the Phantom and then connect to the PC?
     
  13. Ozzyguy

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    He said he cant even boot up the Phantom. 5.37 volts is all he has.
     
  14. hipster2014

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    All fixed. Batteries charging correctly. Copter lift off and stable flight achieved. All working as designed! Thanks for your guidance and help!!
     
  15. N017RW

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    Care to share?
     
  16. Ozzyguy

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    Yes please share so you may help others!