Specifications Emitter: Cree XP-L High Intensity, neutral white or cold white, mounted on copper DTP MCPCB Flux: ~1000 lm Throw: ~400 m & ~50Kcd Firmware: Tom E’s open-source GPL NarsilM v1.3 adapted by Texas_Ace User interface:
[1] By default the GT micro is set to use the very intuitive Narsil smooth RAMPING UI. Instant access to a 2.5 A TURBO mode is also provided.
[2] A more conventional discrete level MODE-SET UI is available as an alternative. Any one of 12 predefined mode-sets can be selected.
[3] MOMENTARY mode is useful for signaling purposes or rapidly/briefly lighting up targets. Battery: One 14500. Cell is not included. Driver: Texas Avenger FET driver Reflector: 29 mm ID, aluminum, smooth finish Lens: Glass with anti-reflective coating Body: Aluminum with Type III hard-coat anodizing Button: Tactile with back-lit rubber boot Ingress rating: Equivalent to IP65, do not immerse in liquids Weight: Approximately 70g without cells Dimensions: 36 mm Ø head x 105mm length
This is a direct drive flashlight (I assume it has a simple FET+7135 driver just like the GT mini), and even more so than with 18650 lights, the actual drive current depends on which 14500 you use, and it makes a big difference if it is fully charged or not.
2.5A sounds like a proper current for a 14500 driving a XP-L hi. You can get higher currents with low voltage leds like the SST-20, or the White Flat (which will be my mod).