He is just flying for 30 seconds, you don't need much battery for that. 500gram LiPo should have more than enough juice for that.
Look at your laptop battery, they are around 50Wh which should be able to provide 2kW for almost 2 minutes, disregarding the maximum current it can pump out.
This is what makes me doubt if it really is fake or not. "Why has nobody done this before"? Because light weight power storage and motors has not been available until now. But the videos smell CG so I'm still calling fake on this one.
Look at your laptop battery, they are around 50Wh which should be able to provide 2kW for almost 2 minutes, disregarding the maximum current it can pump out.
This is what makes me doubt if it really is fake or not. "Why has nobody done this before"? Because light weight power storage and motors has not been available until now. But the videos smell CG so I'm still calling fake on this one.