Rctestflight homemade “flashlight” is not as normal flashlight, he connected 10 100W
LED chips together, each chip with the large aluminum heat sink, and use the batteries.
The “torch” weighed 4.5 kg, after connecting the battery lasts for 10 minutes. Not very practical, because if used within 30 meters can seriously affect vision.
But rctestflight said that the 1000 watt / 90000 lumen of LED flashlight in most case, it is not very practical, because if used within 30 meters can seriously affect vision.