From hydrogen to solar powered, this video covers some of the longest flying drones!

Sources & Credits:

7. US1
https://spectrum.ieee.org/energywise/...
   • Video  

6. Hybrix 2.0
   / @quaterniumtechnologies  
   • WORLD RECORD OF DRONE ENDURANCE! HYBR...  

5. Perimeter Drone
https://skyfront.com/perimeterdrone/

4. 800W
https://dronelife.com/2019/04/16/inte...

3. Hydrone Griflon
http://www.mmcuav.com/hour15flightt...

2. Solar PoweredQuadcopter
   • 100% solarpowered quadcopter drone  
https://news.nus.edu.sg/pressrelease...

1. Wireless Charging
   • InFlight Wireless Charging for Drones  
https://www.xponential.org/xponential...

Music:
"Ambient Music No Copyright" By MusicMaster