Unfortunately,
Mavic 3 batteries are quite large, so charging them from a small battery bank is not ideal. When researching battery banks, definitely look at watt hour numbers, not milliamp hours, because the watt hour number tells you how much energy the battery can store, whereas milliamp hours tell you how much current the battery can put out for how long at its rated voltage, which obscures things a bit and makes comparisons more difficult (different batteries with different voltages may have different mAh ratings but the same actual energy capacity).
At 77Wh, the
M3 batteries are nearing the capacity of most of the largest small battery banks you can buy. Even the larger of the two Anker ones mentioned previously is only 99Wh, meaning you could get about one full charge from 0-100% after efficiency losses, or probably around one and a half charges from 30% to full. Unfortunately, 99Wh is the largest battery you’re allowed to take on an airplane, so if you’re going to be flying anywhere that’s the best you’ll get from a battery you can bring with.
Some other good options are:
- Buying more
M3 batteries (more charged batteries = more flight time)
- Buying more
M3 car chargers (charging more batteries at once = shorter charging time during your car rides)
- Buying a solar panel array as suggested previously (you can charge the batteries without needing to actually carry the power with you)
- Buying a huge battery cart and charging the batteries with that. These are often intended to be used with solar panels, but they would serve your needs without the panels (this size of battery has the capacity to get you a reasonable number of charges, but they are huge, heavy, expensive, and not allowed on airplanes)
- Buying a Mini series drone and using your Mavic batteries or other batteries to keep it charged (smaller drone = smaller battery = easier to charge on the go. If you have the charging hub for the
M3, I believe it can do USB output, and you could use that to charge Mini batteries. If each
M3 battery is 77Wh, and even the largest Mini battery is 28Wh, you could hypothetically get two full charges out of each Mavic battery you have (remember, this is for the larger Mini batteries). That would be about 3 charges from 30% to full, per
mavic 3 battery that you already have. After efficiency losses it probably wouldn’t be quite that many, but you get the idea. A Mini also makes all of the other options for charging easier, because smaller batteries simply require less energy to fill)
- Just charging your batteries from the car and running the car to keep the car battery from dying (definitely cheaper, might be slower, but overall probably doable unless you can’t run the car very much outside of driving)
