I'm planning to scout around an island offshore; flying from the mainland.


Does anyone know the most "efficient" airspeed for the M4Pro? I just want to minimise the chance of it having a salty bath, if possible.

To increase the range, it is recommended to fly at a speed of approximately 25 mph.

As confirmed by testing from many users, full speed in normal mode will give the most miles per battery.

Hi, ValleyForge. Thank you for reaching out. We recommend using the N-mode for maximum speed during flight. It's not advisable to use the Sport mode as it drains the battery faster. Hope this helps.

it's in the specs https://www.dji.com/bg/mini-4-pro/specs
18 km (with Intelligent Flight Battery and measured while flying at 40.7 kph in a windless environment at 20 meters above sea level)
25 km (with Intelligent Flight Battery Plus* and measured while flying at 44.3 kph in a windless environment at 20 meters above sea level)

alex_markov Posted at 4-3 21:41
it's in the specs https://www.dji.com/bg/mini-4-pro/specs  
18 km (with Intelligent Flight Battery and measured while flying at 40.7 kph in a windless environment at 20 meters above sea level)
25 km (with Intelligent Flight Battery Plus* and measured while flying at 44.3 kph in a windless environment at 20 meters above sea level)

Thanks - I knew the DJI specs but I was hoping for some real world information.
I mean, we all believe what DJI says, right?

ValleyForge Posted at 4-3 22:19
Thanks - I knew the DJI specs but I was hoping for some real world information.
I mean, we all believe what DJI says, right?

I mean, we all believe what DJI says, right?
Right .. in 9 years of flying and checking DJI specs, I've never seen anything to indicate that the specs are not accurate.

ValleyForge Posted at 4-3 22:19
Thanks - I knew the DJI specs but I was hoping for some real world information.
I mean, we all believe what DJI says, right?

I have done it - with ~40 km/h I reached 14+ km flight with Plus battery landing at 26% but I live at 600+ m ASL and they "measure" at sea level and windless I never can have

Keep recording time to points of interest that you want. Excessive recording time shortens battery life also.

Some things I think that you should consider before anything else,
1) wind speed and direction, if the island is distant do not fly the outbound leg down wind i.e. do not sent the drone to the island in an offshore wind.
2) DO NOT ingnore or override low battery RTH warnings.
3) Do not set an excessively high RTH height. Wind speed generally increases with height. if there are no obstacles between you and where the drone will go an RTH height of 30m is probably more than enough. Of course if you are going to fly the drone behind the island then the RTH height need to be sufficient to clear the island and its vegetation.

From memory the following is a good lesson and was flown with a relatively new Mavic 3.