I am curious, just a ball park idea, how long an incan bulb can continue to operate at peak performance!?! My 8AX commander is dim at best. I have owned this light for approximately 2 years..maybe a tad longer and have never replaced the bulb because it has never burned out! My batteries are custom from Silverfox so I think they are still good to go although I do not have a way to test the batteries. Not to get off topic...what is the ball park range in terms of months if the light gets used nightly / 6 nights per week.