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Fenix TK51 Dual-Output Tactical Flashlight - 2 x CREE XM-L2 U2 LEDs - 1800 Lumens - Uses 3 x 18650s

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This eye-catching light looks like your generic tube with an LED at first glance, but when you take a closer look the extra LED pops out at you! Using two CREE LED's, the TK51 boosts out an output of a heart-stopping 1,800 lumens! Unleash the beast and his little imp friend to get the maximum output of a lifetime. An easy to use button interface lets you choose exactly the kind of lighting you desire for any given situation. Imagine how bright the Strobe mode is when you blind your enemies on the spot!

CREE Technology

Two Great LEDs

This light features not one, but two CREE XM-L 2 (U2) LED's which provide up to 900 lumens each. Combine the two and you get 1,800 lumens on Turbo mode! An additional 800-lumen High mode, 300-lumen Mid mode, and 20-lumen Low mode are just a taste of what this light has to offer. For even more control, you have access to one-button instant turbo mode and strobe activation.

Superb Craftsmanship

Fine Quality

The TK51 uses three 18650 rechargeable Li-Ion batteries to produce such amazing outputs. The three button interface is a one-of-a-kind Fenix feature as well. This light comes with built-in reverse polarity protection, a digitally regulated output for beam consistency, and spot and flood beam capability. IPX-8 dust and waterproof, made from Type III anodized aluminum and anti abrasive finish, and a lens made from toughened ultra-clear glass with an anti-reflective coating all make this light a marvel to be marveled at.

Make it Rechargeable!

The Fenix TK51 flashlight is now available as an all-in-one bundle! We've paired this handheld light with 3 x 18650 batteries. Also included in the bundle is a 4-bay battery charger so you can easily re-power your flashlight, when needed. Now your shopping experience is easier than ever before, as everything you'll need is conveniently bundled together.

  • 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
  • Over heat protection to avoid high-temperature of the surface
  • Premium Type III hard-anodized anti-abrasive finish
  • Toughened ultra-clear glass lens with anti-reflective coating
  • Anti-roll, slip-resistant body design
  • IPX-8 water resistance

  • LED: 2x CREE XM-L2 U2
  • Runs on: 3x 18650 (Batteries not included)
  • Output mode/Runtime - Single Light:
    • Turbo: 900 lumens / 5hrs
    • High: 400 lumens / 11hrs
    • Mid: 150 lumens / 32hrs
    • Low: 10 lumens / 400hrs
  • Output mode/Runtime - Two Lights:
    • Turbo: 1800 lumens / 1.75hrs
    • High: 800 lumens / 4.5hrs
    • Mid: 300 lumens / 13.5hrs
    • Low: 20 lumens / 210hrs
  • Peak Beam Intensity: 45,200cd
  • Dimensions:
    • Length: 7.4" (188mm)
    • Diameter: 1.9" (48mm)
  • Weight: 15.2oz (430g) (excluding batteries)
Runtime (Hours):1.754.513.5210-
Output Modes:3+ Brightness Levels, Strobe
Compatible Batteries:3 x 18650, 6 x 16340, 6 x CR123A
Batteries Included:No
Flashlight Usage:Search
Throw Distance (Max):425m
Switch Location:Body
Product Certifications:ANSI, IPX-8
Warranty:Battery Junction 30-Day Warranty, Fenix 5 Year Warranty
Return Policy:Battery Junction Return Policy
Primary Material:Anodized Aluminum
Product Weight:15.2oz
Product Dimensions:7.4" (L) x 1.9" (Diameter)
Country of Origin:CN
2 Reviews
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By James
Fargo, ND
Top notch and easy to use flashlight
August 2, 2018
High quality flashlight with easy to use switches. Great light for all around use and has super bright illumination when needed. This has become my go to flashlight.
By Dave
Bright Dual Light Fenix Quality
January 15, 2018
This is a bright dual CREE LED light with the advantage of a focused beam and the smaller wider focus beam. Control buttons are easy to use. Well worth the sale price.
ProsDoesn't roll off things! Fenix Quality construction. 3 18650s for long light duration.
ConsSmall LED focus could be wider.
1 Question & 2 Answers
from Greenville, SC. asked:
November 15, 2016
Which 18650 battery is recommended, 2600 mAh or 3500 mAh?
2 Answers
Higher mAh will result in longer runtimes, so as a general rule the larger mAh battery is preferable.
Submitted by: Customer Service on November 28, 2016
Higher mAh will result in longer runtimes, so as a general rule the larger mAh battery is preferable.
Submitted by: Customer Service on November 28, 2016

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Fenix TK51 Dual-Output Tactical Flashlight - 2 x CREE XM-L2 U2 LEDs - 1800 Lumens - Uses 3 x 18650s

  • $159.95
  • This Item Qualifies For FREE SHIPPING
  • In Stock