Originally Posted by
adclark
I haven't ever used the 18650 batteries so I can't speak to that. On another note, if the light only has one LED, I don't see how 1800 Lumens is even possible.
It's a pretty simple matter to put two (or more likely four, nine, sixteen, etc.), modules right next to each other. They still look like one LED, but they can make them emit as much light as they like.
And zacster is right about the runtime. And it gets worse if it was powered by 3xAAAs -- instead of 30 minutes of runtime, you'd get like ten, assuming that the batteries could even put out that much power.
This story intrigues me -- 200 lumen/watt LEDs? Yes, please!