Read more at http://www.popsci.com/nikola-tesla-inspired-tech-powers-drone-in-mid-air-using.
Students from the Nanchang Hangkong University, have even developed solar-powered mini drones. Many drones require a lot of power for a short amount of time. Mobile power technology significantly extends the battery life of drone. Drone require power for long endurance missions without returning to ground. Designeddrone can stay in the air in well-lighted condition - maximum take-off weights up to five kilograms. Here`s article http://m.chinadaily.com.cn/en/2015-01/16/content_19333549.htm This Is of course Only a Test, but I recently bought a Mini Quadcopter here http://jonsguide.org/best-top-mini-quadcopter-reviews/.