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can any one explain to me the battery C rating and charging

Discussion in 'Phantom 2 Vision + Discussion' started by shane_hood, Aug 24, 2014.

  1. shane_hood

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    Guys i fly rc planes and have some pretty awesome rc chargers capable of charging up to 20Amps
    when you look at the dji charger it looks as if it is just a 12 vold source going into the battery
    does any one know if it is posssible to charge the DJI battteries at more then 4 Amps?
    (rating of the supplied charger)
     
  2. Mori55

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    Re: can any one explain to me the battery C rating and charg

    No you can't.
     
  3. DownunderPhantom

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    Re: can any one explain to me the battery C rating and charg

    Wouldn't the inbuilt electronics of the battery regulate the amperage when charging so it would not matter if you had a 4amp or 25amp power supply.
     
  4. cahutch

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    Re: can any one explain to me the battery C rating and charg

    The DJI charger is just a power supply. The charging circuits are all inside the smart battery cap.
    There's no direct access to the battery terminals or balance port. Unless you want to open it up, it is what it is.

    Good info here on C ratings and all about liPo batteries
    http://www.rchelicopterfun.com/rc-lipo-batteries.html
     
  5. shane_hood

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    Re: can any one explain to me the battery C rating and charg

    I do understand all about lipo batteries etc
    just was wanting to charger the 3s DJI lipo battery quicker and safely...

    eg on a balance board with a high end charging unit.
     
  6. Mori55

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    Re: can any one explain to me the battery C rating and charg

    It won't work , I hAve a powerlab 8 and can't use it. Just buy a couple of battery's and some DJI chargers.
     
  7. Mori55

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    Re: can any one explain to me the battery C rating and charg

    It won't work , I hAve a powerlab 8 and can't use it. Just buy a couple of battery's and some DJI chargers.
     
  8. shane_hood

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    Re: can any one explain to me the battery C rating and charg

    why wont it work?
    do these batteries not have a balance lead?
    if that is so then how does it know how well each cell is charging?

    the answer you gave is a very costly one..
     
  9. Panamon Creel

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    Re: can any one explain to me the battery C rating and charg

    You can charge the P2 batteries faster by using a 12.6V power supply with a higher amperage. The internal charging circuit of the battery doesn't seem to limit the charging current and for best battery life it is recommended not to exceed 1C which in the case of the P2 batteries is 5.2 Amps.
    You can also charge the batteries with an multi charger that has a Lead Acid Charging feature. Set the to Lead Acid 6 cells charging and limit the Amps at or below 5.2 Amps. You need to power on the P2 battery before starting to charge otherwise the charger will give a "no battery" Error.
     
  10. cahutch

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    Re: can any one explain to me the battery C rating and charg

    No. They do not have a balance lead. If there is one, it's soldered to the internal charging circuit boards under the cap.
    Even the battery connector is not a direct connection to the battery, it goes through the charging board. The "smart battery" has it's own balance charger built in.
    There's no direct access to the battery unless you break it open and cut wires.
     
  11. shane_hood

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    Re: can any one explain to me the battery C rating and charg

    understand
    i dont want to go damaging the smart battery circuitry by pumping in more amps. they have kept it all very propriatery havent hey