£13 Mavic Car Charger!

Discussion in 'Mavic Pro Discussions' started by thefrisbee995, Nov 29, 2016.

  1. thefrisbee995

    thefrisbee995 Well-Known Member

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    I found this on eBay, it's much cheaper than buying the "official" DJI car charger for £45 but is it bad to use it with the mavic batteries?
     
  2. Deckyon

    Deckyon Well-Known Member

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    I would not trust it.You spent $1000 on the drone and skimping on $30... Just doesnt make sense.
     
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  3. Ricardo

    Ricardo Member

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    I've been using a similar charger form my P3A, with a battery hub (3) and so far all great.
    Battery health keeps at the top and charging times around 60 to 70 minutes.

    As i'm waiting for a Fly More bundle i won't need it, but otherwise, i might give it a try.
     
  4. Mikero

    Mikero Well-Known Member

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    I wouldn't trust it on an £85 Mavic Battery!
     
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  5. Deckyon

    Deckyon Well-Known Member

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    Sticking with DJI products on this one. Just not worth the risk to me.
     
  6. Pedro

    Pedro Well-Known Member

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  7. thefrisbee995

    thefrisbee995 Well-Known Member

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  8. Pedro

    Pedro Well-Known Member

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    Volts is volts, as long it doesn't catch fire and supplies within the range the charger can accept I don't see how this could possibly damage anything..? I'll be trying mine tomorrow, will let you know..
     
  9. 4wd

    4wd Well-Known Member

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    With smart batteries the charger is really only a power supply, it doesn't do anything clever - all the clever stuff for balancing is in the battery.
    I'd be surprised if the 12V alternative causes any problems, even less likely an inverter will do anything bad provided it has high enough (watts) rating.
     
  10. Dronebow

    Dronebow Well-Known Member

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    I'm planning on getting an inverter. You can get them for about $30 for about a 400w inverter. Cheaper than the car charger.
     
  11. thefrisbee995

    thefrisbee995 Well-Known Member

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    I heard stuff about some being "pure sine" and the one's that aren't will wreck it...?
     
  12. Kilrah

    Kilrah Well-Known Member

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    A bad inverter only risks frying the charger, which is cheaper ;)

    It still needs a current-limited output.
     
  13. thefrisbee995

    thefrisbee995 Well-Known Member

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    So surely it is better to get a car charger then? I'd rather avoid frying a charger and having nothing left to charge with.
     
  14. Dronebow

    Dronebow Well-Known Member

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  15. msinger

    msinger Well-Known Member
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    I've never heard of anyone complaining of wrecking a DJI battery, but I sometimes see people say similar things. If you're looking for a pure sine inverter, this BESTEK inverter is fairly inexpensive.
     
  16. slr001

    slr001 Well-Known Member

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    One could make the same "I wouldn't chance it, it might blow up" argument for any equipment... I buy aftermarket batteries and chargers for laptops that need them. Usually at about 25% of the cost of the OEM batteries or chargers. My gopro has aftermarket batteries and charger, and low and behold it still works.

    Accessory prices are sky high because the manufacturers know that many sheep I mean people will buy them. The DJI charger and the 3rd party charger are likely made in the same factory in China.
     
  17. thefrisbee995

    thefrisbee995 Well-Known Member

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    I only worry because my old P3P I had I used to use a cheap 500w inverter I got from China through eBay and that used to warm up the wire going from the 12v output into the inverter and make the 12v port hot to touch. Seemed to work fine for the first dozen flights then on the last one the drone just cut out when returning to home and came crashing down and wrote the thing off. The battery said something around 20% (maybe a little less, I don't remember) and I always thought hmm, maybe the battery got some sort of damage from the inverter?
     
  18. 2hi2fly

    2hi2fly Member

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    I couldn't resist the $12 price and bought one direct from Hong Kong, took about 3 wks to get (2 days from Amazon prime for $17). First thing I did was pop it open and connected it to a variable PS and meter. I was surprised by its wide range of acceptable input voltage and well regulated output. I was able to run the input from 10.8 to 16vdc before it would cut out and indicate its status with a fast flashing power light. Its output voltage varied from 12.99 to 13.04 depending on the battery's discharge condition, never did it exceed the 13.05v limit of the Mavic battery. Output current typically was in the range of 3-4amps. The unit does get pretty warm so it will be interesting to see how it does in a 140f car in mid summer.
    Overall I was impressed, given its cheap price and good performance.

    side note... While I had the unit apart i wanted to see what demands the battery's regulating circuitry put on it's charger. So I connected the battery directly to my variable PS. From what i could tell the Mavic battery never demanded more the 4amps of power at any voltage level above 13vdc.
     

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    #18 2hi2fly, Feb 9, 2017
    Last edited: Feb 9, 2017
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