DIY 7,500 Lumens 100W LED Flashlight That Only Costs About $10 To Build

May 20, 2015

Tiffany Mueller

Tiffany Mueller is a photographer based in Hawi, Hawaii. You can follow her Twitter here and her personal life here.

DIY 7,500 Lumens 100W LED Flashlight That Only Costs About $10 To Build

May 20, 2015

Tiffany Mueller

Tiffany Mueller is a photographer based in Hawi, Hawaii. You can follow her Twitter here and her personal life here.

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Ready for the latest installment of a DIY lighting project? Assuming you have a couple 18V Nickel Cadmium power tool batteries laying around, as I suspect many of you DIYers do, you can build this powerful flashlight on the cheap. Plus, aside from being  inexpensive to build and it’s also surprisingly simple to make.

Take a look at the video to see how it’s done:

YouTube video

While it might not have the look a professional is going for, it certainly gets the job done and could be really handy to have around in pinch. The creator, Julian Ilett, shows us how he assembled a makeshift heatsink to help keep the light cool, but it still gets hot in about 20 seconds. So, if you’re feeling especially inventive, you may want to put a little extra focus on improving the heatsink on your build.

In case you were wondering, he uses a LED light, such as this one found on eBay for $8.99USD including shipping.

[ via YouTube ]

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Tiffany Mueller

Tiffany Mueller

Tiffany Mueller is a photographer based in Hawi, Hawaii. You can follow her Twitter here and her personal life here.

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8 responses to “DIY 7,500 Lumens 100W LED Flashlight That Only Costs About $10 To Build”

  1. Joscha Häring Avatar
    Joscha Häring

    Awesome project but 10$ Flashlight isn’t really true. The light itself will cost 10$ but you have to get some batteries as well (if you don’t already own any) which will be more expensive. But he says it in the video as well. Still a cheap light but not 10$.

    1. mike Avatar
      mike

      Rechargeable batteries. I don’t see a need to include the cost of the batteries in the cost of the device.

      1. mike Avatar
        mike

        Actually ignore what I said, the build includes the batteries as a part of the design. Which is a shame.

  2. Peter Nissen Avatar
    Peter Nissen

    I also drive Scale RC trucks and we have tried lights like this on our trucks, usually running 12v and with a larger heatsink/fan cooling system, wow are they ever bright

  3. Phillip C Reed Avatar
    Phillip C Reed

    I just picked up a cheap-ass no-name Chinese LED video projector that says it puts out 80 lumens. I wonder if I could engineer one of these in place of the existing light? (I note that there’s a 50 watt version of the same bulb, in case 100 watts is too much.)

    1. Tiffany Mueller Avatar
      Tiffany Mueller

      I like the way you think, Phillip, let me know if you get it working!

    2. mike Avatar
      mike

      I don’t see why not. Chip LEDs are pretty cheap. Even high quality new ones do not cost that much. http://www.luxeonstar.com/

  4. Ramon von Juterczenka Avatar
    Ramon von Juterczenka

    I build a 100 W LED too. Maybe some hints for you: https://www.youtube.com/watch?v=Bh3FTfb5i74