As I already wrote and demonstrated by calculation in this my previous comment if it were true that the magician's lamp really makes what he claimed (generating a 5000K white LED light of 10000 lumens, using only 4W) it doesn't need any external battery or grid to get electric energy as power supply because it might produce what it needs (working in a closed loop) by means of PV cells that use the generated light.
This proves that simply it's another magician’s hoax to feed his gullible fans that still support him.
It only needs 0.008 W at the input to the SKL device, so the control is the bottleneck, at 0.2% efficiency (a 100 x improvement from Copenhagen). Luckily the SKLED COP recovers this loss (99.8 % , ∴ COP 99.8), plus a few lumens more.