You Can Take it Camping Too

This fire-starting flashligh requires:

1. * 12 1.2V NiMH (rechargable) batteries capable of sustained 10 amp draws.
2. * An Osram HLX 64623 bulb "over-clocked" to 14+V, to about 140 watts, with an estimated light output of about 4000 lumens. (Compare that to a regular 2D MagLight, which is much, much less than 50 lumens.)
3. * There's also a metal reflector.

Source

Second degree hat tip Extreme Geek