Went to one of our local shops today that stocks some stuff for LEOs.....went looking to see if they had flashlights. They stock mostly Surefire. Found one that is about the length of your hand, and uses two lithium batteries...non rechargeable. The bulb is advertised at 120 lumens for 1 1/4 hr. Price was $59.95. Had a couple in the 250 - 300 lumen range, but they were $250 and up.....I might get one of the 120 lumen lights to try....if it doesn't work for what I want, I'll put it in the truck, and get something bigger.....