Attention! Not suitable for films!

As such, the power supply adapter works as an inexhaustible battery.
As you go anyway can not rely on outlets and would in any case only impede the cable, the power supply is probably only for the ("home" -) suitable Studio / or VLT even for time-lapse photography in socket range.
The cable, however, is dimensioned quite short and the power supply depends on a larger tripod already in the air.

Now for the biggest drawback, which makes it for example Youtube filmmakers totally useless if one does not use external audio recorder:
The power supply caused a massive and broad-band 50Hz-hum on the soundtrack in the video (with an external Micro!), Which is impossible to remove in post!