This is happening with cars too it seems, more and more are starting to use hydrogen instead of lithium batteries.
It makes a lot of sense for a drone. The energy density of hydrogen is much higher than lithium ion. And it's far lighter than a battery.
http://www.businesswire.com/news/home/20151215005540/en/Intelligent-Energy-Hydrogen-Fuel-Cells-Significantly-ExtendLONDON--(
BUSINESS WIRE)--
Intelligent
Energy, the energy technology company, announced today it has
developed a prototype of a hydrogen fuel cell powered range extender for
drones. The range extender offers longer flight time and fast re-fuel
capabilities, addressing two of the biggest challenges for manufacturers
of battery-powered drones. Intelligent Energy will unveil its prototype
of the fuel cell range extender on a drone at CES 2016, January 6-9 in
Las Vegas. The company has been really encouraged by the positive
reaction from potential customers to this prototype.
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Epic Music: https://www.youtube.com/watch?v=vAigCvelkhQ&list=PLo9FRw1AkDuQLEz7Gvvaz3ideB2NpFtT1
https://archive.org/details/softwarelibrary_msdos?&sort=-downloads&page=1
Kyleran: "Now there's the real trick, learning to accept and enjoy a game for what it offers rather than pass on what might be a great playing experience because it lacks a few features you prefer."
John Henry Newman: "A man would do nothing if he waited until he could do it so well that no one could find fault."
FreddyNoNose: "A good game needs no defense; a bad game has no defense." "Easily digested content is just as easily forgotten."
LacedOpium: "So the question that begs to be asked is, if you are not interested in the game mechanics that define the MMORPG genre, then why are you playing an MMORPG?"