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.

 

[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

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