Can't speak to "Professional" grade Drones, but seems all of the recreational units are in the 15-25 minute battery life range.
I tried to "pair" a second device (iPad) to the DJI Phantom 3 -- wanted others to be able to see live views better -- but that was a "no-go" ......... seems it only pairs (WiFi) to one device at a time.
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A bad day on the Big Lake (although I've never had one) - Still beats a day at the office!!
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