Pretty simple question that I'm just too lazy to answer myself. Out of curiosity, what is the battery lifetime of a cheap 2xA battery incandescent flashlight compared to a cheap 1xA battery LED flashlight. On the one hand, the LED consumes a lot less current. On the other hand, the 2xA inc flashlight has two batteries. The LED is probably running 40ma at 1.5v, but I'm not sure what current the inc lamp is running at 3v. Off-the-top-of-my-head answer appreciated. Factor of two? Factor of ten?