DIY Charging Mavic 2 Pro Batteries from USB‑C PD Power Bank – Anyone Successfully Done It?

[Aquilasfx]

Hi everyone,

I’m looking for advice on building a DIY solution to charge DJI Mavic 2 Pro batteries using a USB-C PD power bank, specifically, I have an Anker Prime 27650, which supports up to 140W output over USB-C.

I understand that charging Mavic 2 batteries this way isn’t officially supported, but I’ve seen threads suggesting it is possible with the right voltage and current setup.

What I’ve learned so far:​

• Mavic 2 Pro batteries require around 17.6V at 3.5A for proper charging (~60Wh).
• Some users mention using USB-C PD trigger modules + DC-DC step-up converters to get the necessary voltage.
• Others tried using a car charger powered by a USB-C to 12V car socket adapter, with mixed success.

Options I’m considering:

Use the DJI Mavic 2 car charger​

• Power it via a USB-C PD to 12V cigarette lighter adapter
• This seems cleaner, but 12V might not be enough for proper charging

My questions:​

1. Has anyone successfully built a portable field charger using a PD bank?
2. Which boost converter or PD modules did you use?
3. How did you safely connect to the battery?
4. Does the Mavic 2 battery BMS accept a DIY charging input? Any issues with overcurrent or thermal protection?
5. Realistically, how long did it take you to charge a battery in the field?
6. Are there pre-built kits or open-source projects I might have missed?

Any working DIY setups, schematics, or tips would be much appreciated. Thanks in advance!

 

[offtheback]

Hi everyone,

I’m looking for advice on building a DIY solution to charge DJI Mavic 2 Pro batteries using a USB-C PD power bank, specifically, I have an Anker Prime 27650, which supports up to 140W output over USB-C.

I understand that charging Mavic 2 batteries this way isn’t officially supported, but I’ve seen threads suggesting it is possible with the right voltage and current setup.

What I’ve learned so far:​

• Mavic 2 Pro batteries require around 17.6V at 3.5A for proper charging (~60Wh).
• Some users mention using USB-C PD trigger modules + DC-DC step-up converters to get the necessary voltage.
• Others tried using a car charger powered by a USB-C to 12V car socket adapter, with mixed success.

Options I’m considering:

Use the DJI Mavic 2 car charger​

• Power it via a USB-C PD to 12V cigarette lighter adapter
• This seems cleaner, but 12V might not be enough for proper charging

My questions:​

1. Has anyone successfully built a portable field charger using a PD bank?
2. Which boost converter or PD modules did you use?
3. How did you safely connect to the battery?
4. Does the Mavic 2 battery BMS accept a DIY charging input? Any issues with overcurrent or thermal protection?
5. Realistically, how long did it take you to charge a battery in the field?
6. Are there pre-built kits or open-source projects I might have missed?

Any working DIY setups, schematics, or tips would be much appreciated. Thanks in advance!

Not DIY but works well for me.Charges 3-4 batteries 2 at a time from 25% to full.I suppose you could charge this unit in the field the way you would charge a M2P battery.Had it 4 years,still going strong.

 

[Kilrah]

Does the Mavic 2 battery BMS accept a DIY charging input? Any issues with overcurrent or thermal protection?

They don't care, but the charging regulation is NOT internal to the battery so whatever you connect must be a proper CC/CV supply adjusted accordingly.

• Others tried using a car charger powered by a USB-C to 12V car socket adapter, with mixed success.

Problem is the DJI car charger stops early to prevent overdischarging your car battery, at 12V it's already cut out.

A 15V PD trigger might be in range to supply the DJI car charger.
EDIT: Yup it's happy at 15V, so if you have the M2 car charger you can supply it with a PD trigger set to 15V, IF the powerbank can deliver more than 3A at 15V. Normally the standard profile is 15V/3A but the car charger will draw about 3.5.

 

[HoozierDroneDaddy]

"Others tried using a car charger powered by a USB-C to 12V car socket adapter, with mixed success"

Why not just use an inverter plugged into your vehicle cigarette lighter socket and produce 120v to the DJI charger.
Some vehicle have 120v outlets built-in.

I have a 120v outlet in my primary vehicle and I also carry an inverter in my other vehicle that does not have a 120v outlet.
I simply plugin the 240w charger into the 120v outlet or the inverter and charge all three batteries at once.

There are many models with varying power options. Here is one example for less than $100.00

Amazon.com: OLTEANP 1000 Watt Power Inverter 12V DC to 110V/120V AC Car Inverter with LCD Screen Display, 2 AC Outlets, 36W Type-C Port, 5V/3A USB Port, Car Power Converter for Truck, Home, Vehicles, Laptop, Trip : Automotive

Buy OLTEANP 1000 Watt Power Inverter 12V DC to 110V/120V AC Car Inverter with LCD Screen Display, 2 AC Outlets, 36W Type-C Port, 5V/3A USB Port, Car Power Converter for Truck, Home, Vehicles, Laptop, Trip: Power Inverters - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

[Kilrah]

Why not just use an inverter plugged into your vehicle cigarette lighter socket and produce 120v to the DJI charger.
Some vehicle have 120v outlets built-in.

He wants to charge from a PD power bank, not a vehicle, the quote was an attempt to have said power bank "simulate" a car for the car charger to be connected to but yeah, won't work.

 

[Aquilasfx]

He wants to charge from a PD power bank, not a vehicle, the quote was an attempt to have said power bank "simulate" a car for the car charger to be connected to but yeah, won't work.

so, no possible solution in 2025? oh my god :/ I saw on YouTube a guy attaching a dji car charger for Mavic 2 battery to a adaptor car lighter to usb-c, setting 15V, and attaching the input usb-c to an anker prime 27650mah. Do you think it will work, orcas it only a scam video?

 

[Kilrah]

I saw on YouTube a guy attaching a dji car charger for Mavic 2 battery to a adaptor car lighter to usb-c, setting 15V, and attaching the input usb-c to an anker prime 27650mah. Do you think it will work, orcas it only a scam video?

As I mentioned with 15V it will work if the powebank allows going above the official 3A max of the 15V profile. If he showed it working it's probably fine with this specific powerbank, but it's not a given for others (or possibly revisions of the same) since it's out of spec.

so, no possible solution in 2025?

Sure is, you can always use an adjustable PSU module with PD in and forego the car adapter entirely (or cut the wire to get the connector like I did here).



Module is https://www.aliexpress.com/item/1005007417239732.html
Case is https://www.aliexpress.com/item/1005003595367698.html (kit, with the multi input module)
Can get the power input board standalone if you want to make your own case/don't care about one https://www.aliexpress.com/item/1005003914464620.html

That'll trigger the powerbank at 20V and you can set the reg to the required 17.6V and max current to what your PB can supply up to about 3.5A.

 

[Aquilasfx]

As I mentioned with 15V it will work if the powebank allows going above the official 3A max of the 15V profile. If he showed it working it's probably fine with this specific powerbank, but it's not a given for others (or possibly revisions of the same) since it's out of spec.



Sure is, you can always use an adjustable PSU module with PD in and forego the car adapter entirely (or cut the wire to get the connector like I did here).

View attachment 184022

Module is https://www.aliexpress.com/item/1005007417239732.html
Case is https://www.aliexpress.com/item/1005003595367698.html (kit, with the multi input module)
Can get the power input board standalone if you want to make your own case/don't care about one https://www.aliexpress.com/item/1005003914464620.html

That'll trigger the powerbank at 20V and you can set the reg to the required 17.6V and max current to what your PB can supply up to about 3.5A.

Just saw that the video that I saw, the guy was talking about MAVIC Air:

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Probably is different compared to Mavic 2 battery

 

[Aquilasfx]

what about this guy? https://www.bronine.com/