You mean a few hours of flight time? How many batteries do you need for that?
I mean ... a couple hours of activity which mostly are airborne but also includes battery changes, quick cups of coffee & general leg stretching/clear the head in between flights.
The clip in post #4 is a a whole Sunday afternoon of flying condensed ... from lunch until sunset, like 1PM to 6PM.
Have several sized quads to fly which have very different characteristics...
The smaller ones share 12, 4S batteries of different sizes which gives flight times ranging from 8min up to 25min (& weights, there fore different flight behaviors requiring different amount of concentration).
The larger quads require 6S batteries & share 11, the flight times spans from 5min fully loaded with GoPro & agile flying, up to nearly 20min depending on which battery I choose & if I load up the GoPro or not ... the weights of the batteries plays a role here also of course & as the bigger quads in general have endless motor power that also regulates how hard I fly them ... which in turn draw more amps, shortening the flight time.
As I only fly in full manual (called Acro mode here ...) & fast, close up face to obstacles I need to be fully focused while maneuvering ... after like max 10min continuous flying I need to either drop the speed, substantially increase the distance to obstacles or go up on height ... to be able to have any kind of stamina left when I land.
The LiIon batteries which goes for 20-25min are much heavier, affecting the maneuverability & the possibility to do quick high speed punch ups ... so usually strap them on in the end of the day for some longer tree top surfing, cruising manner flights.
Here another clip from the same day as the one in post #4 ... but this time with a sub 250g 4" quad, the clip is a complete flight with the lightest battery, a 850mAh 4S battery. The clip is from the DVR recorded in the
goggles only & the periodic blurriness on the left/right 3:rd of the screen is called "focus mode" & is intended to warn that the radio connection is getting affected to the worse & to enhance the middle 3:rd so it's unaffected when Mbits in the video transmission is lost .
This smaller/lighter quad is a lot more agile then the larger quads, but have less punch on max rev... a true park ripper