27 Nov '15, 6pm

90,000 Lumen Flashlight Is Illuminating, Impractical and Blindingly Good

90,000 Lumen Flashlight Is Illuminating, Impractical and Blindingly Good

It may be better to light a single candle than to curse the darkness, but that was before [RCTestflight] came up with this: a 1000W LED flashlight that outputs about 90,000 lumens of light. That’s a lot: the best pocket LED flashlights output about 700 lumens. [RCTestflight] built this monstrosity using ten 100-Watt LEDs, running off two RC car batteries. Each of the LEDs is connected to a sizable voltage converter and a very large heatsink that holds all of them in place. He says he gets about 8 minutes of light out of this thing, and that the heatsink gets warm after a minute or two of use. We’re not surprised: LEDs are more efficient than most other devices at converting electrical energy to light, but some always gets lost as heat. Check out the video after the break. It’s very impressive, but this thing isn’t particularly practical as a handheld. It is big, heavy and ...

Full article: http://hackaday.com/2015/11/27/90000-lumen-flashlight-is-...

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