Terralux TLE-310MR-EX LED Flashlight Conversion Kit For Rechargeable MagLite The MiniStar31MR-EX is the ultimate LED conversion for your MagLite MagCharger Multi-mode function: (high/medium/low), user configurable to single mode via switch on side of module Electronically regulated for constant light output Includes LED Sense thermal management for maximum light output and reliability under the most extreme conditions Extends battery runtime