Triggerlite

Triggerlite is a self-recharging ultra-portable flashlight. The rechargeable lithium ion batteries power a set of three light emitting diodes (LEDs). Using LED technology allows for the flashlight to shine brighter while consuming less battery power than traditional bulb-based flashlights.

True to its name, the Triggerlite is charged by releasing the trigger lock and repeatedly squeezing the trigger mechanism. RAPHA, the manufacturer of the Triggerlite, make the claim that their squeezing mechanism and battery system is the only one available that lets you recharge the flashlight while using it at the same time.