Fenix TK51

Code: 6942870302348
rating rating rating rating rating Rated 4 / 5 (1 review)

Maximum output of 1800 lumens. Powered by 6 x CR123A or 3 x 18650 batteries.

The Fenix TK51 has a maximum brightness of 1800 lumens from the Cree XM-L2 U2 LED and is powered by 6 x CR123A or 3 x 18650 batteries. In an emergency 1-2 x 18650 or 2-4 CR123AA batteries can be used, however prolonged use under these conditions will shorten the lifespan of the rechargeable battery.

A superbly built, highly versatile light from Fenix, the TK51 has a wide range of applications from general use to Search and Rescue. The TK51 has both wide area flood and long reaching (425m) beams which are individually adjustable for output up to a maximum of 900 lumens each, for 16 output combinations. 

The flashlight has an individual control system that consists of three side switch buttons. One controls the spot light on/off, the output selection and instant strobe function. The second is to activate the flood light, output selection and instant strobe function. The third switch is for spot and flood light on/off and the instant turbo function.

Brightness Levels: (Runtimes are based on both flood light & spot light simultaneously)
Single Lights
Turbo: 900 lumens - 3 hrs 30 mins runtime
High: 400 lumens - 9 hrs runtime
Mid: 150 lumens - 27 hrs runtime
Low: 10 lumens - 420 hrs runtime
Two Lights
Turbo: 1800 lumens - 1 hr 45 mins
High: 500 lumens - 4 hrs 30 mins
Mid: 300 lumens - 13 hrs 30 mins
Low: 20 lumens - 210 hrs
Strobe: 1800 lumens

Beam distance of up to 425 meters, waterproof to 2 meters submersible and impact resistant to drops from 1 meter.


  • Press the spot or flood button to activate the individual lights. Press the power button to turn off.
  • Press the power button to activate both lights together and to turn off.
  • With the Flood light on, press the flood button to cycle through the modes, in order Low-Mid-High-Turbo-Off.
  • With the Spot light on, press the spot button to cycle through the modes, in order Low-Mid-High-Turbo-Off.

Includes: Lanyard & spare o-rings.

  • Utilizes two Cree XM-L 2 (U2) LEDs with a lifespan of 50,000 hours
  • Uses three 18650 rechargeable Li-ion batteries  or six CR123 single use batteries.
  • 188mm (Length) x 48mm (Diameter)
  • 430-gram weight (excluding the battery)
  • Digitally regulated output with low-voltage indicator
  • Reverse polarity protection guards against improper battery installation
  • Three button interface for fast and convenient operation
  • Made of durable aircraft-grade aluminum
  • Premium Type III hard-anodized anti-abrasive finish
  • Toughened ultra-clear glass lens with anti-reflective coating
RATING: StarStarStarStar
(4 / 5 Stars)

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