Fenix LD40 LED flashlight
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Fenix LD40 LED flashlight


The Fenix LD40 is a powerful all-around outdoor flashlight with simple operation. The neutral-white LED (R4) throws a powerful light beam with even farther distance and can provide efficient outputs and ensure better penetration power and color rendering to adapt to more various conditions. Powered by four AA batteries, it eliminates the burden of heavier flashlights. The 2x2 battery arrangement makes the LD40 comfortable to hold and accommodates a deeper and larger reflector to throw the beam farther. The unique dual switches in the tailcap can help switch between modes quickly. The LD40 has seven output models as well as a momentary-on function.


    • Cree XP-G Neutral-White LED (R4) with a lifespan of 50,000 hours
    • Battery Power: Four 1.5V AA (NiMH, Alkaline) batteries
    • Dimensions
      • Length: 185mm
      • Diameter: 43mm
      • Weight: 170 grams (excluding batteries)
    • Digitally-regulated circuit maintains constant brightness
    • Patented physical structure avoids circuit damage from reverse battery polarity
    • Tactical push-button tailcap switch for momentary-on
    • Dual switches for simple, fast operation
    • Emitter housing/head made from aircraft-grade aluminum
    • Flashlight body made from high-quality plastic
    • Toughened ultra-clear double glass lens with anti-reflective coating
    • Output Modes
      • Turbo: 248 lumens, 3 hours 13 mintues
      • High: 110 lumens, 9 hours 42 minutes
      • Mid: 43 lumens, 27 hours
      • Low: 4 lumens, 245 hours
      • Strobe: 278 lumens
      • Slow flash: 64 lumens
      • SOS: 64 lumens
    • Impact resistance: 1.5m
    • Waterproof: IPX-8, 2 meters


The black button in the tail cap is the power switch; the silver button is the dimmer switch.

Depress the power switch lightly to activate the light immediately. Depress the switch completely to turn on the flashlight and lock it on. Another depress will turn the flashlight off.

When the flashlight is first turned on, it will be in the default/constant output modes. Depress and hold the dimmer switch for 0.5 seconds to shift into the flashing modes.

While in the default/constant output modes, depress the dimmer switch quickly (within 0.5 seconds) to shift to the next output. The output sequence is as follows: Turbo > Low > Mid > High > Cycle.

In the flashing mode, depress the dimmer switch to cycle through the flashlight modes: Strobe > Rescue Signal > Slow Flash > Cycle.

The LD40 will memorize the constant and flashing modes it was on when turned off.

  • Item #: FX-LD40
  • Manufacturer: Fenix
  • Manufacturer's Product Number: LD40
  • Condition: New

Fenix LD40 LED flashlight

Price: $69.95
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