The TerraLUX MiniStar Luxeon LED Kit For Mini Maglite. $26.95. I love my Maglite, a top quality product. But I reckon this kit could improve it significantly (hint: 6 x battery life?)
In addition to replacing the incandescent bulb in the MiniMag, the MiniStar also includes an upgraded reflector and adds the PowerPush circuit to produce a constant light intensity, avoiding the dimming and orange cast produced by ordinary incandescent bulbs. The PowerPush circuit also extends battery life by completely draining all of the power from the AA cells.