Standard drones 30 minutes, this thing went 1 hr and had 1/2 hour left. Not bad as it went 3 times normal .
We don't know what happened with the Silent Falcon, suffice to say it was already a multi-hour with it's solar panel wings and battery setup. It will stay up 8 hours in daytime and 4 hours at night, maybe they didn't need the extra capacity.
NEAH was at the cusp of going broke at the time. I favor the battery development over any fuel cell R &D wasting money.
Following the Fuel Cell path they would be bankrupt by now.