“Power requirements are much simpler for the mainstream user than the majority of high power lights. With the single extension tube you can fit either a single "AA" battery or a single 14500 rechargeable. Screwing in the extension tube allows for two "AA"s but alas the voltage limitations of the light mean a pair of 14500's is a no-go. To my eyes the output is about the same on two "AA"s as it is on a single 14500. “




Balder BD-1P T6 LED Flashlight @ 3DVelocity