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DJI Mavic Air USB battery charger

Made from charging cable and USB to 12V boost board

dorijanDorijan
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DJI Mavic batteries have all the charging circuit inside them(At least Air and Pro).
Therefore all they need is correct voltage(13.2V) on the correct pins.
Although you get 4battery dock with FlyMore combo it does not charge them simultaneously.
Having USB powered charger also enables charging from power-bank on-the-go.

A simple project, but it does require some de-soldering/soldering (one 0603 resistor and cables)
And the BOM total is under $10

  • 30min of wok and you are done

    Dorijan • 06/27/2020 at 11:13 • 0 comments

    The process is quite simple.
    1) Disassemble the enclosure of 12V Boost circuit
    2) Find 2 resistors that are in series from 12V to GND, there common point is Vref
    3) Replace the one going from 12V to Vref with slightly higher one(in my case original was 300kOhm and I replaced it with 325kOhm(420k+480k on top of each other))
    4) Verify that the output voltage is around 13.2V(likely anything from 12.8-13.3V should be OK)
    5) I cut the round part of banana plug cover to keep just the cable strain relief
    6) Put it together and you have a Mavic Air travel charge

View project log

  • 1
    Necessary steps

    The process is quite simple.
    1) Disassemble the enclosure of 12V Boost circuit
    2) Find 2 resistors that are in series from 12V to GND, there common point is Vref
    3) Replace the one going from 12V to Vref with slightly higher one(in my case original was 300kOhm and I replaced it with 325kOhm(420k+480k on top of each other))
    4) Verify that the output voltage is around 13.2V(likely anything from 12.8-13.3V should be OK)
    5) I cut the round part of banana plug cover to keep just the cable strain relief
    6) Put it together and you have a Mavic Air travel charge

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