The default cruise speed assigned by Litchi for all waypoint missions created with the Litchi Mission Hub is 17.9 mph unless otherwise specified by the user. The entire cumulative distance of over 2,300 miles that my drone fleet has covered whilst flying Litchi waypoint missions was traversed at that default 17.9 mph because I assumed it to have been empirically determined to be the optimal airspeed for most hobby-grade quadcopters.

In other words, my presumption has been that increasing the cruise speed of my Litchi waypoint missions above 17.9 mph would result in the drone consuming more battery power per unit distance, which would translate into the drone covering less total distance per full battery charge, due to the increased battery consumption at faster speeds, coupled with the increased aerodynamic drag induced on the airframe by the greater wind resistance the drone would experience at faster speeds.

Just today, however, I stumbled on a discussion in the Mavic Pilots Forum dating back to 2017, that dwelt on the subject of a Mavic Pro1â€™s optimal cruise speed needed to maximize the overall round-trip distance covered per battery charge.

Mavic Battery and Speed efficiency chart | DJI Mavic, Air & Mini Drone Community

The graph above caught my attention, despite it being the result of research conducted by middle school students. The upshot of the graph is that battery drain does NOT increase linearly with a Mavic Pro1 droneâ€™s airspeed, meaning that battery longevity will NOT be appreciably reduced if the drone flies any given Litchi waypoint mission at say 25 mph as opposed to the 17.9 mph that Litchi sets as the default cruise speed for its waypoint missions.

To me, this is an earth-shaking revelation that has the potential to increase the maximum round-trip distance covered by my Mavic Pro1 from 6 miles to 7.5 miles per full battery charge. That additional 1.5 miles of distance my drone can theoretically cover per full battery charge, attainable by flying at 23 miles per hour, significantly expands the reach of my drone well beyond what I imagined to be possible.

I am writing about this discovery because I am curious to hear from other Litchi users whether they retain Litchiâ€™s 17.9 mph, or assign their own higher speeds as a matter of routine, without incurring any increased battery drainage and attainable mileage penalties due to selecting that higher speed. Any thoughts that can be shared about this question would be greatly appreciated.