Each day he clamped a Lange V9 ski boot onto the metal stem of an 8-foot-high Instron compression machine and flipped the power switch.

FORBES: Magazine Article

Each day he clamped a Lange V9 ski boot onto the metal stem of a 2.5-meter-high Instron compression machine and flipped the power switch.

FORBES: Revenge of the nerds

By pressing the switch once, the light operates in high mode to produce a full power 130 lumen light beam with a long 4 hour runtime.

ENGADGET: Explosion-proof flashlight could be the first to outlive its owner