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Fenix TK16 (XM-L2 U2, 1x18650 or 2xCR123A) Review——Candle Lamp, CPF

Publish Time:2015-09-04

The TK16 is TK lines from Fenix available with an Cree XM-L2 U2, running on 1x18650 or 2xCR123A batteries. The TK16 features a dual switch tailcap interface, dual layer body and high output. This is the first light to feature Fenix's dual tail switch, if I remember right.

Packaging is Fenix's current standard cardboard box, with detailed specification and information printed on the box. Inside, included with the light are user manual, warranty card, product inserts, spare o-ring, pocket clip (attached), grip ring (attached), wrist lanyard, and holster with velcro closing flap.
Manufacturer Specifications from Fenix website and user manual :

• 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) (5.5’’×1’’×1.3’’)
• Weight : 122 grams (4.3 oz.) 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

The hard (type III) anodizing is a matt black and consistent throughout with no blemishes or flaws on my sample. Labels are not as bright white (i.e., light gray) as some other lights, but those actually help to make them less obtrusive. The clip-on stainless steel clip feels substantial. It holds onto the light very tightly. The light has anti-roll indentations on the body, but the clip is even more helpful in that regard. 

The light has 2 parts (i.e. one piece head and body, tailcap). The head was bonded to the body with glue.

<%2ze:14px;color:#000000;">The light is a heavily driven light for this class. Compared to the other 1x18650 class light, the TK16 shows the awesome efficiency and output. 


1. White door beamshot (about 50cm from the white door) on max. output on 1x18650 (2600mAh) VicLite protected cell 
- ISO125, F/8.0, 1/25sec, Auto white balance 

- ISO125, F/8.0, 1/100sec, Auto white balance

- ISO125, F/8.0, 1/800sec, Auto white balance

- ISO125, F/8.0, 1/2000sec, Auto white balance

The light has a middle sized bright hot spot. The hotspot is well focused. A soft corona surrounding the hotspot is slightly yellow. The spill beam width is wider than others. Beam pattern is good, free from noticeable artifact. The overall beam tint is typical cool white on my sample. 

2. 7.0m Indoor Beamshot on max. output on 1x18650 (2600mAh) VicLite protected cell 
- ISO125, F/2.8, 1/10sec, Auto white balance

3. 55m Outdoor Beamshot on max. output on 1x18650 (2600mAh) VicLite protected cell 

- ISO125, F/2.8, 1sec, Auto white balance

4. 85m Outdoor Beamshot on max. output on 1x18650 (2600mAh) VicLite protected cell 

- ISO125, F/2.8, 1sec, Auto white balance

Beam pattern is good, with a wider spill beam. The TK16 has good throw for the class, given the size of the head.

Overall Impressions

• Build quality is excellent
• Dual switch tailcap interface
• Dual layer body design
• No standby current drain due to the secondary tailcap switch
• Anti-roll indentations on the body
• The light can't tailstand
• Electrical reverse polarity protection function
• Mode memory for constant outputs (except Strobe)
• True flat-top batteries work fine
• Timed step-down feature on Turbo
• Output-runtime efficiency is excellent 
• Max. output (Turbo) is very high 
• True Moonlight mode is not available
• No sign of PWM flickers at any output modes
• Tailcap lock-out is not available
• Beam pattern is good, with a reasonably wide spill beam
• The overall tint is typical cool white

Fenix TK16 provided by Fenix for review.

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