Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Blue box charger & car builtin elec plug or inverter?

Discussion in 'Pro/Adv Discussion' started by Rastus, Mar 31, 2016.

  1. Rastus

    Joined:
    Dec 15, 2013
    Messages:
    39
    Likes Received:
    1
    Location:
    Texas, USA
    Try to do a search and find out info on my own but I'm illiterate regarding electrical stuff.

    Will the blue box multi-charger work with the builtin car electrical plug or do I need an inverter?
    The car plug states 115V AC 150W. The Blue box states Input 100-240V Output 17.5V 4A.
    Thanks for the help!
     
  2. alokbhargava

    Joined:
    Sep 28, 2015
    Messages:
    5,142
    Likes Received:
    1,658
    Location:
    San Francisco, CA
    Each battery needs 17.5 V, 4A for charging.

    You can use a car charger that gives you directly 17.5 V, 4A. In this case you don't need DJI charger.

    If you use 12V to 110V car inverter, then you can plug DJI charger into it to get 17.5V, 4A

    Choice is yours. You got to be careful while picking the inverter as it should give good AC output.
     
  3. sonof40

    Joined:
    Oct 22, 2015
    Messages:
    515
    Likes Received:
    82
    Location:
    San Ramon, CA
    I think you could do up to two batteries.
    2 x 4 x 17.5 = 140 watts
     
  4. skygear

    Joined:
    Mar 22, 2016
    Messages:
    64
    Likes Received:
    28
    Remember though. Inverters should have a PURE SINE WAVE. Not square, even a Modified Square is better than a square wave.

    Inverter Efficiency - Factors Involved.

    Another important factor involves the wave form and inductive loads (ie an appliance where an electrical coil is involved, which will include anything with a motor). Any waveform that is not a true sine wave (ie is a square, or modified square wave) will be less efficient when powering inductive loads - the appliance may use 20% more power than it would if using a pure sine wave. Together with reducing efficiency, this extra power usage may damage, or shorten the life of the appliance, due to overheating.
     
  5. Reed L

    Joined:
    Sep 13, 2015
    Messages:
    1,273
    Likes Received:
    391
    Location:
    Alta, Ca.
    Like he said, the answer is No, Volts x Amps = Watts so only 2 out of the 4 ports would work but most likely the blue box would overheat and fry. You're going to need a 300w inverter at least to run it.
     
  6. alokbhargava

    Joined:
    Sep 28, 2015
    Messages:
    5,142
    Likes Received:
    1,658
    Location:
    San Francisco, CA
    I don't think he can do two as efficiencies of DJI charger also play a role which could be for example 60%

    So to drive 140 W output, we will need 140/0.6= 230W minimum as output of the inverter.
     
  7. Rastus

    Joined:
    Dec 15, 2013
    Messages:
    39
    Likes Received:
    1
    Location:
    Texas, USA
    Thanks for the replies. I'll get an inverter.


    Sent from my iPad using PhantomPilots mobile app