I like the idea of using Li-ion 18650 rechargable batteries as they are cheap to buy and have a fair bit of punch when used with the current range of LED lights.
Regards Mark
Not sure if anyone played with them yet. The price is $449 U.S. 100 Minutes of burn time at high end (800 Lumens) looks good.
I've got a couple on order but they might not ship till after DEMA