According to foreign media reports, YouTube user rctestflight showed in his video released on Saturday that he had just made "the brightest flashlight in the world", which is said to turn the night into daylight. Rctestflight's homemade "flashlight" is not like a conventional flashlight. It is made up of 10 100-watt LED chips , each equipped with a large aluminum heat sink and battery-powered. This "flashlight" weighs 4.5kg and can last up to 10 minutes after connecting the battery.
However, rctestflight said that this 1000watt/90000lumen LED flashlight is not very practical in most cases, because if it is used within 30 meters, it will seriously affect vision.
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