Batteries by Androsean claim incredible flight time! Anyone has tested them?

[Yaros]

There's a youtuber from kazakhstan called "DJI Androsean" who makes batteries, and tests them in different extreme conditions, such as flying very far, or very high, or in cold weather...
In one of his videos, DJI Air 2S is shown flying with this custom battery, and the flight time is 42 minutes! Incredible!!
He sells the batteries through a telegram channel, pretty suspicious to me, and he doesn't speak English, only russian...
Does anyone here have any of the batteries built by him?

Here's his flight test video. Sorry, the video isn't english, but he shows the flight, and then the results (logs):

Also I want to mention, I checked some of his other videos and he seems to be a crazy guy doing crazy stuff with his drones, for example:
Flying to space with Mavic 2 and shutting off the motors at 7000 meters and then turning them back on and landing successfully.

 

[karlblessing]

The same batteries shown was also mentioned in another thread being sold off AliExpress. The pictures showing a close up is an original DJI Air 2 3500mAh battery that had been expanded possibly with either completely new cells of a different quality or double stacked from another original. And the extra casing being 3d printed. AliExpress shop wants $196 for it.

 

[Xitor]

Flying to space with Mavic 2 and shutting off the motors at 7000 meters and then turning them back on and landing successfully.

Just watched that, at 7000M and only 25% battery left, Free fall was probably the only way he was going be able to save enough battery to make it back to his starting point.

 

[karlblessing]

Just watched that, at 7000M and only 25% battery left, Free fall was probably the only way he was going be able to save enough battery to make it back to his starting point.

At 22,000 feet there's not enough descent speed built into travel that distance. So you're right, free fall it is.

 

[manowar_gub]

androsean's battery not compatible with newer firmwares, check his last vids about it - he strongly recommend not to update, because battery would not work

 

[karlblessing]

androsean's battery not compatible with newer firmwares, check his last vids about it - he strongly recommend not to update, because battery would not work

Like not 2190 and beyond, or lower than that?