HL50 Battery 3 Battery Splitscreen Runtime Comaprison (AA, NIMH, CR123A)

In this video you see a Fenix HL50 headlamp runtime test using 3 batteries. I made this a split screen comparison, so you could see how runtime and brightness output differs between the three different battery chemistries. The obvious winner in runtime is the CR123A battery. It is also brighter for the duration of the runtime too, although the camera setup was slightly different for each test, so the video does not accurately show the difference in brightness between each battery.