I bought a mini-mag 2 cell aa type (27.00 at HD). LED is a 3 watt and provides plenty of light. Actually more that the incandescent model. The batteries seem to not last as long and the LED module just quits when they get low. I found if you just shut the light off then back on, it will come back on again. If you dont change batteries the same cycle will occur. Was cussing it out till it dawned on me... change the batteries! Flashlight is still working like a charm, even after repeated hard hits from dropping it from my mouth. It has the same twist switch with a gasketed base. If it quits I will buy another.