DIY Photo: Build This Powerful Flashlight for $10
Assuming you have a couple 18V Nickel Cadmium power tool batteries laying around (which you may) and a bit of time (which you may not), you can build your own powerful 7,500 lumens 100-watt
flashlight for about $10. The DIY comes from Julian Ilett, and is featured at DIY …
Read the whole story at DIYPhotography.