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Battery charger / battery dock

Discussion in 'Pro/Adv Discussion' started by Holrits, Feb 26, 2016.

  1. Holrits

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    Hi Guys!

    Can you explain me why it is possible to buy a dock to charge 3 batteries at same time, with the original DJI power supply, but in the DJI manual, they say that it is not good to charge both battery and the RC (remote) at same time???

    What are you doing when charging more than 1 battery?


    Regards Nicolai
     
  2. foxy-stoat

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    If its the DJI dock then it only charges one at a time.
     
  3. Holrits

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  4. foxy-stoat

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    #4 foxy-stoat, Feb 26, 2016
    Last edited: Feb 26, 2016
  5. Cuong44

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    the stock charger is 3.3A (adv), 5.7A (pro)
    if you charge 3 batts at once, the current provided by charger will be divided by 3 for each batt. this means each batt will receive only 1/3 current as you charge only one batt at a time. charging time will be increase x3 of course.
    you need a power supply provided 12A or 15A.
     
  6. Holrits

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    Okay, so no reason at all to buy that !
    Have you exstra batteries? and what do you do with charger?
     
  7. PJHoward

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    The best thing about the hub is that you can connect all three batteries at once and the charger will charge all three without having to switch each battery after it charges.
     
  8. tcope

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  9. Holrits

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    or else i shuld just buy the 100watt power supply :p
     
  10. Cuong44

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    this is my charger.
    24V 50A power supply + step-down converter ( 24v to 17.4V).
    the output from converter is 17.4V 10A. can charge 2 batts @ 4.5A each.
     

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  11. PJHoward

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    Who supplies the step-down DC to DC 24 to 17.4V converter?
     
  12. Cuong44

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    as i metioned, 24V 50A power supply.
    it is server power supply, took out from IBM server.
    can buy on ebay, amazon.
    very cheap. got them for 20 bucks
    it's name : ASTEC - AA23260.
     
  13. PJHoward

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    I found it. Thanks. I have a Dell laptop 19.5 VDC @ 12.3A supply I plan on using with the converter.
     
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  14. Alejandro Castanon

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    Did you have to adjust CC on the step-down converter to meet battery max charge? or only CV

    I´m thinking on making my own charging rig, I already have a 24v 60 amp power supply I use for my 4010Duo iCharger

    Regards,
     
  15. Cuong44

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    it seems the icharger has Pb charging mode, you can adjust voltage to 18V (9cell) in this mode.
    i adjusted voltage to 17.4V only, not current. depending on how much batts draws, the converter will draw that current from power supply.
     
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  16. Alejandro Castanon

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    Great, in fact the icharger has Pb funcionality, but I wanted to make a P3 only "charger" I'll give it a try!!

    Regards,
     
  17. alokbhargava

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    Good concept.

    From safety points of view, please house the setup in a bigger box. It's too risky to work with open wires.
     
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