I didn't mean all batteries, but per drone model. For instance, I have 5 batteries each for my A3S and 5 for the Mavic 4 Pro. I'm not a pro and don't regularly fly my drones. Are 5 batteries each enough or are they just going to degrade due to...
I didn’t explain clearly. The controller shown can only be used with goggles (presumably). There is no DJI type basic controller to fly without goggles. Hence the requirement for visual observer for any flight.