SIPIK Focus Zoom 200 Lumen AA LED Flashlight can use 14500 for this Q3 CREE LED Flashlight with 3 watts of power CREE Q3 3watt LED Chip for this AA LED Flashlight special reflector design, enhances light output intensity and distance, up to 800 meters Constant current/voltage circuit design, protects LED emitter from damage Water-resistant uses AA or specialized 14500 rechargeable Li-Ion batteries