Designed for EDC (Every Day Carrying), the new LumaPower LM31 Flashlight provides best balance between Output and Runtime. LumaPower optimized Luma Power LM31 EDC Flashlight with selected battery source for usability, value and power. Rechargeable NiMH battery sources with advantage of large capacity and low internal resistance offers most reasonable power to feed. A single 2600mAH NiMH can offer 95minutes of nearly-flat output for LM301 at Hi-out (350mA forward current) and 1,600 minutes at Low-output. Alkaline is also recommended. The Luma-Power Every Day Carry LM31 Flashlight is also designed for 1.2-1.6 E2 Lithium, but not for 14500 protected or unprotected batteries as Low runtime is affected. Each is integrated with selected bin of LED and pure white for optimal use. With SSC-P4 and Luma's Aluminum OP-reflector and AR-glass lens, project maximum Flood and Smooth beam format. Large Hotspot with Smooth side-spills is perfect for short to medium use. Each LumaPower LM31 Flash Lightship with spare O-rings, Lanyard, GID tail cap as added extras.