TK16 Fenix Flashlight

Max Lumens: 1000
Modes: 5
(9 customer reviews)

$104.00 $79.95


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The Fenix TK16 flashlight delivers functionality and performance, authorizing it as a reliable and necessary tool for emergency and tactical applications. This LED light is the first to feature Fenix’s new Dual Tactical Tail Switch for one-finger operation including instant access to strobe and momentary functions.  Compact body design with one inch body width and slightly larger head is perfect design for current duty belts in Law Enforcement, Security, Industrial and Commercial applications.

For commercial orders and large purchases, contact us at (888) 775-9996 x6, or
WARNING. Be aware of counterfeit Fenix merchandise in the U.S. marketplace.

Max Lumens: 1000
Modes: 5


tk16 specs


Length: 5.5″ (140mm)
Body Width: .98″ (25mm)  Head Width: 1.3″ (34mm)


4.3 oz. (122g) weight excluding batteries


2xCR123A battery or one 18650 Li-ion battery


Holster, clip, lanyard and two spare O-rings


Limited Lifetime Guarantee from Fenix Lighting US

Additional Features of the Fenix TK16

  • Uses Cree XM-L2 U2 LED with a lifespan of 50,000 hours
  • Powered by one 18650 rechargeable Li-ion battery or two 3V CR123A Lithium batteries
  • 140mm(length) x 25mm(diameter) x 34mm(head)
  • 122-gram weight (excluding battery)
  • Digitally regulated output maintains constant brightness
  • Reverse polarity protection, to protect from improper battery installation
  • Anti-roll, slip-resistant body design
  • Tactical tail switch for momentary-on function
  • Tail mode switch for easy and fast output selection, instant Strobe mode
  • Made of durable aircraft-grade aluminum
  • Premium type III hard-anodized anti-abrasive finish
  • Toughened ultra-clear glass lens with anti-reflective coating


Operation Instruction

Dual Tactical Tail Switch

The main tactical switch is larger, the secondary mode switch is smaller.


Tap and hold the tactical switch to turn on the light temporarily, release it the light will go out.

Fully press the tactical switch for constant-on illumination, press again to turn off the light.

Output selection

When the light is on, click the mode switch to cycle through Turbo→Low→Mid→High.

Strobe mode

When the light is on, press and hold the mode switch for 1 second to enter into Strobe mode, press again to return to general mode.

When the light is off, press and hold the mode switch to activate strobe mode temporarily.

Intelligent Memory Circuit

The Fenix TK16 memorizes the last brightness level used in the general mode, but it will not remember the Strobe mode. The next time you turn on the flashlight, it will activate the last brightness level you selected.

Over-heat Protection

The light will accumulate a lot of heat when it is working at Turbo brightness level. When it works at Turbo for 20 minutes or above, the flashlight will automatically adjust the output to prevent the light from overheating.

Battery Specification

Type Dimensions Nominal Voltage Usability  
Fenix ARB-L2 Series 18650 3.7V Recommended
Non-rechargeable Battery(Lithium) CR123A 3V Usable
Rechargeable Battery(Li-ion) 16340** 3.6V/3.7V Cautious*
Rechargeable Battery(Li-ion) 18650 3.6V/3.7V Cautious*
Rechargeable Battery(LiFePO4) 16340** 3.2V Usable
Rechargeable Battery(LiFePO4) 18650 3.2V Banned ×

Warning: Please do not mix batteries of different brands, sizes, capacities or types. Doing so can cause damage to the flashlight or the batteries being used.

*18650/16340 Li-ion batteries are powerful cells designed for commercial applications and must be treated with caution and handled with care.  Quality batteries with circuit protection will reduce the potential for combustion or explosion but cell damage or short circuiting are potential risks the user assumes.

**Only compatible with convex anode battery.

Battery Replacement

Unscrew the tail cap to insert the batteries with the anode side (+) toward the light’s head, screw the tail cap back on.

Usage and Maintenance

  • Disassembling the sealed head can cause damage to the light and will void the warranty.
  • Fenix recommends using excellent quality batteries. If the flashlight will not be used for an extended period, remove the battery, or the flashlight could be damaged by electrolyte leakage or battery explosion.
  • Unscrew the tail cap one-half turn or take out the battery to prevent accidental activation during storage or transport.
  • Low-voltage Warning Function: When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level. When this happens in Low output mode, the flashlight blinks three times every five minutes to remind you to replace the battery. To ensure normal use, the flashlight will not turn off automatically and will work until the batteries run out completely.
  • Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare.
  • Periodic cleaning of the battery contacts improves the flashlight’s performance as dirty contacts may cause the flashlight to flicker, shine intermittently or even fail to illuminate for the following reasons:

Reason A: The batteries need replacing.

Solution: Replace batteries (Please confirm the correct installation of anode and cathode).

Reason B: The threads, PCB board contact or other contacts are dirty.

Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol.

If the above methods don’t work, please refer to the warranty policy before contacting your authorized distributor.

*Notice: The routine cleaning video can be watched and downloaded through Fenix official website, please log onto the service channel->“maintenance for light”.

9 reviews for TK16 Fenix Flashlight

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  1. Anonymous (verified owner)

    Very bright and good size

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  2. Steven (verified owner)

    Good quality flashlight. Very bright and easy to use controls.

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  3. timothy (verified owner)

    This was a gift for someone that was really surprised by the brightness of the light and the different modes.

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  4. Bobby B. (verified owner)

    My everyday carry, it ranks right up there with my Benchmade Infidel and HK 40 cal. What a trio.

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  5. Dane

    Purchased 3 TK-16s as well as an ALG-00 Rail Mount and an AER-03 Remote Pressure Switch. I use 2 around the farm for my wife and I and the third on a rifle. The design of the end cap is very functional being able to change brightness as well as have an instant on strobe. The Mode Switch, at times, fails to operate correctly but does come around with some help (reason for 4 stars). The Mode Switch reliability is something that definitely needs to be addressed. The TK-16 accessories are well thought out. The AER-03 has worked flawlessly and is very ergonomic. The quick release ALG-00 is also a solid excellent design with ability to switch between weapons in seconds.

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  6. Stan

    Bought 2, TK16, for Christmas; awesome lights. Already had a TK15 and an old PD31 also great lights and NO problems. No problems with the our 2 TK16’s. We will buy more Fenix because you can’t beat the quality and $.

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  7. Alan W.

    Just got this for my AR. Fit and finish are excellent. The size is just what I was looking for. Love the dual tailswitch design and being able to use strobe immediately. Also like the mode memory so you don’t have to cycle through each time you use it. It is very bright. Compared to the TLR-1s on my M&P 9 this is slightly brighter with a better hotspot due to the smooth reflector. Seems well constructed so I hope to get many years of use out of it. Using a protected Panasonic NCR18650B and it fits perfectly. Overall, a great light I recommend.

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  8. Ari Kemppinen

    In these wintery black Finnish days, what we need is more light. Too much is not enough. TK16 is.

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  9. Alan

    Just got this for my AR. Mounts up nice. Fit and finish were great. Love the two button design and the ability to use strobe immediately. I am using a Protected Panasonic NCR18650B(3400 mah) battery and it fits perfectly in the tube. I have a TLR-1s on my M&P 9mm and the TK-16 is slightly brighter and has a better hotspot due to the smooth reflector. Time will tell if it holds up but it should as it is a well built flashlight. Overall, a great light that I would recommend.

    1 out of 1 people found this helpful. Was this review helpful to you?
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What Our Ambassadors Say

Fenix TK16 Tactical Flashlight Review

Fenix Lighting USA
Fire and Rescue Ambassador, Collin W. Reviews TK16 Flashlight Before getting into this review, I will clarify that I purchased this light at full price on my own and was not offered any incentive, coupon, or compensation from Fenix. Six months later, I bought a second (again at full price) as a backup. This photo…

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