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DJI Phantom 2 Vision Quadcopter Battery Parrallel Charger Bo

Discussion in 'Phantom 2 Discussion' started by WessexWyvern, May 14, 2014.

  1. WessexWyvern

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    Hi - Does anyone have any advice on or experience with these?

    [​IMG]
    DJI Phantom 2 Vision Quadcopter Battery Parrallel Charger Board 3 Batteries
     
  2. IrishSights

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    Been using it for a couple of weeks now without any problems. Just make sure the batteries are pushed all the way down on the connectors.

    Sent from my Galaxy Note 8
     
  3. Sanababit

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    In addition to that you need to turn the battery on just like when you power up your phantom so the battery can start charging, i have one and works great, got it for 10 dlls

    Sana
     
  4. Xanadu

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    Where'd you buy?
     
  5. Sanababit

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    Ebay, from china, it works with my regular charger, it takes 3 hours to charge 3 batteries

    Sana
     
  6. IrishSights

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    I bought mine from eBay.co.uk but from a UK source. Cost me a bit more but I had it in 2 days rather than a long wait from China. Suited my situation better.

    Sent from Samsung S4 via Tapatalk
     
  7. WessexWyvern

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    (easier to return too)
    __________________

    When you say 'works with your regular charger' do you mean your Phantom 2 charger. The one in the picture appears to have a round power connector rather than the two pins of the DJI charger ???
     
  8. IrishSights

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    Itss got both round and the dji charger connection. Photo doesn't show it well. Its the other side of where the 2 vertical boards are.

    Sent from my Galaxy Note 8
     
  9. WessexWyvern

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    Thanks :)
     
  10. PB30X

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    [​IMG]

    Got the same one, and charges @3 roughly @3+hours.. Like it this farツ.. Didn't put it on the balance charger as of yet still waiting on the parameters for amperage I asked about.. Not sure I wanna cook 3 batteries on the wrong settings.. The DJI box does get hot with 3 connected.. Also would like to include occasional issues with acknowledging batteries... I just flick the strip reset on my power reset panel and Waite @10-20sec and flick back on...


    Via smoke signalsツ.
     
  11. riblit

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    No advantage when connected to the standard DJI power supply. That power supply can't deliver enough current to support a 1C charge rate with 3 batteries in parallel.

    You need a power supply that will deliver around 15 Amps. Do not use a balance charger in LiPo mode. Use it in Pb mode.
     
  12. N017RW

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    You got that right.

    My DJI charger is rated @ 4amp out.

    The batt. is 5.2 Ah.

    I wish it was [even] 1C charge for ONE battery!

    DJI has made every effort to minimize LiPo hazards with their 'system'. But the batteries are way too expensive because of this ['smart' portion] and shamefully it's NOT REUSEABLE.
     
  13. Sanababit

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    I am new at this and really dont understand what your saying, i need to read up some more, but i have this charger bar and use it with my original phantom 2 charger and works pretty well, it charges 3 batteries in around 3 hours, if i did one by one it would be 4.5 hours, about balancing, i really dont understand it and really dont know if the charger does this or how it does it and for what reason do you need to do it, lol, yes i know, investigate or can i just simply ask, maybe someone can enlighten me

    Sana
     
  14. IrishSights

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    Like Sana I don't understand all this 1C stuff and the 'no advantage' statement. Can you please in plain language explain what yo mean so I can understand. I do photography using the P2 as a platform and not an RC geek. To me I have an 'advantage', it charges 2 (I only got 2) batteries at once quicker than charging 2 seperately one after the other. The charger gets no warmer than when charging one. Am I damaging or reducing the battery life by charging via this bar?

    Sent from Samsung S4 via Tapatalk
     
  15. riblit

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    1C is one times the rated current of the battery. The Phantom 2 LiPo is rated at 5200mAh. This means it will source 5.2 Amps ( mAh / 1000 ) for 1 hour. I don't see a max C anywhere on the battery but if I assume 10C it will source 52 Amps ( 5.2 x 10) for one Tenth of an hour or 6 Mins.

    The recommended charging current for a LiPo is it's rated current for I hour ( 5.2 Amps for 1 hour ). Some LiPos can be charged at 2C or even 3C but it increases the internal temperature and decreases life.

    A fully charged cell is 4.2 volts, giving 12.6 volts for a 3 cell pack.

    The DJI power supply, it's not a charger, is rated at 12.6 Volts at 4 Amps and is protected against overload - try shorting it and you will see the green lamp go out until the short is removed. It won't run a 12V 50Watt halogen lamp. The cold inrush current trips the protection circuit. I can draw a bit over 4 Amps from mine before it shuts down.


    Disclaimer: This is simplified.

    When you connect two or more loads in parallel the voltage across the loads remains constant and the current divides in inverse proportion to the resistance of the individual paths. As far as the power supply is concerned the smart batteries are variable resistors, the greater the resistance the less current down that path.

    The smart battery contains circuitry to charge the cells and detect when they are fully charged. When the battery voltage is low the internal circuitry looks like a low value resistor, allowing a lot of current to,flow into the battery, as the battery charges it's terminal voltage increases and the internal circuitry increases the value of the resistor, decreasing the current and eventually stopping it completely.

    With 2 batteries at the same state of change the 4A available from the power supply will divide, so each battery will get 2 amps. If you replace the power supply with one that will source 10A at 12.6V, each battery will be able to sink up to 5A.
     
  16. N017RW

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    I agree with riblit.

    I will also add that once 'inside' the battery assembly, there is (should be) built-in balancing circuitry as well. This must contribute to the [ridiculous] battery cost as it cannot be reused (until someone clever does a workaround ;) )

    The 3 cells (3S or 3 in-series) also have individual leads so each cell (voltage) can be monitored individually during charging and adjusted such that each cell achieves the same charge level (a.k.a. 'balancing'). Ideally 4.2V, +/- .1V

    This of course comes at a cost as it reduces the efficiency of charging (slightly).
     
  17. IrishSights

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    Thanks for that. So are you saying that a 10A at 12.6V power supply will safely charge much quicker using this bar over the stock charger? Is there any other spec regarding a PS that needs to be considered? It seems that balancing is done inside the smart P2 battery.

    Sent from Samsung S4 via Tapatalk
     
  18. riblit

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  19. N017RW

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    Thanks for that riblt.

    I will take a look!
     
  20. Sanababit

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    Re: DJI Phantom 2 Vision Quadcopter Battery Parrallel Charge

    So the bigger the amps out of the charger, the faster it charges?

    Sana