Fenix WT20R flashlight review

1 x Cree XP-G3 LED, 1 x Cree XD16 S3 LED
400 lm output
3434 cd intensity
1 x ARB-LP-2000U Li-Ion battery pack

The Fenix WT20R flashlight released in 2019. It uses 1 x Cree XP-G3 LED, 1 x Cree XD16 S3 LED, SMO reflector and 1 x ARB-LP-2000U Li-Ion battery pack. The powerful emitter in this flashlight provides up to 400 lm output, 3434 cd intensity, and a beam distance of 117 m.

Curious to know if the Fenix's flashlight is top-notch? Stay tuned for the answer!

Table of Contents

The content of this article reflects our own experiences and viewpoints. We aim to offer insights on a topic, and we hope others find it helpful and motivating. Additionally, we make every effort to provide accurate and comprehensive coverage. If you found an error or something lacking in the specifications for the Fenix WT20R, then tell us.

Fenix WT20R / WT20R

The flashlight is a must-have tool for outdoor activities. These include camping, hiking, and night-time exploration, it offers guidance and safety. The WT20R has TIR lenses. Engineers design them to minimize light scattering and decrease lens artifacts. This light has 3 + 3 modes of lighting. The WT20R flashlight recalls the last used mode. So, you don't need to access higher brightness levels unless you need to.

Fenix WT20R specifications

Rated 4 / 5 based on 1415 user votes.

This Fenix flashlight is compact and handheld. It is easy to carry and maneuver.

Fenix WT20R / 2

Body, materials, weight, colors

Weight154 g
Length117.5 mm
Body diameter28.3 mm
Head diameter43.2 mm
Materialaluminium alloy with HAIII hard-anodized finish

The WT20R is generally comfortable to hold for a long time. It is also easy to carry in pockets or bags. A balanced flashlight has even weight. It can be more comfortable to hold for longer and reduce hand fatigue. The aluminum bodies can be anodized. This adds a protective layer and a wide range of color options for flashlight bodies. The HAIII coating is often matte or textured. This finish improves grip and feels nice in the hand. This flashlight features a captivating black color.

Fenix WT20R / 1

System, LED, lens, reflector

Emitter1 x Cree XP-G3 LED, 1 x Cree XD16 S3 LED
Color temperature6500 K
Switchelectronic side

Cree is widely regarded as a reputable LED manufacturer. Warm, white light is generally more comfortable. It's also less harsh on the eyes than cool, white light. If you need long-range light, get a flashlight with a smooth reflector. It will have more throw distance. This TIR lens offers flexibility. It can create many beam patterns, from wide angles to spotlights. The electronic switches may have a higher chance of standby drain.

Performance, flux, intensity, throw

Flux400 lm
Intensity3434 cd
Throw117 m
CD/LM factor8.59

You mainly need a flashlight for basic tasks like finding keys or navigating in dimly lit areas. 400 lm can be enough. It can also be enough for occasional use around the house. The WT20R flashlight has 3434 cd. It provides a much brighter and more intense beam. The throw distance is the farthest distance the flashlight can light an object. Candela per lumen (cd/lm) measures a flashlight's beam intensity. It compares this to its total luminous flux or output.

Software, user interface, modes

Modes3 + 3 modes
Mode memoryyes
Ramping modeno

A flashlight's modes are different output settings or brightness levels. They can be chosen to meet different needs and preferences. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. It stays in that mode when you turn it on again.

Features, battery, protections

Battery1 x ARB-LP-2000U Li-Ion battery pack
Battery indicatoryes
Charger portyes, on special battery
Thermal regulationno
Specialsadjustable head

The WT20R flashlight's power source is 1 x ARB-LP-2000U Li-Ion battery pack. It provides reliable, long-lasting energy for top performance. A battery indicator lets users see the battery status. It helps them decide when to recharge or replace the battery. The Low Voltage Protection helps save the battery's capacity. It stops it from reaching a critically low voltage. Flashlights without thermal protection may be more susceptible to overheating under extreme conditions.

The "6" in the IP66 rating shows the level of protection. It's against solid objects, like dust and foreign particles. The IP66 rating indicates that the flashlight has a protection against water jets. This flashlight has a magnetic base. It lets it easily stick to metal surfaces.

Accessories, package contents

Package contentsARB-LP-2000U battery pack
microUSB cable
spare o-ring

The included battery is picked to match the power needs of the WT20R flashlight. This ensures reliable and efficient operation. When gripping the flashlight with the lanyard around your wrist, it gives a more secure hold. It also gives a more stable hold. When using spare O-rings, follow the maker's instructions. Use their guidelines for proper installation.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the WT20R flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

Conclusion, pros and cons

This Fenix flashlight, like any other, has its strengths and weaknesses. Let's take a close look at both sides to understand this flashlight better. I share my thoughts on its standout features and the parts that might need improvement. Keep in mind, these are just my opinions, and you might have a different perspective.


  • lightweight
  • aluminium body
  • TIR lens
  • side switch
  • multiple modes
  • mode memory
  • battery indicator
  • low-voltage protection
  • dust protected
  • waterproof
  • magnetic
  • battery included


  • cool light
  • moderated performance
  • low intensity
  • no thermal regulation
  • no auxiliary LEDs


Fenix WT20R / WT20R photo 1.
Fenix WT20R / WT20R photo 2.
Fenix WT20R / WT20R photo 3.
Fenix WT20R / WT20R

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David Hagon
I love bushcraft and flashlights. I find joy in mastering wilderness survival skills and exploring the realm of illuminating gadgets. Bushcraft isn't just fun, it's a learning journey. I form a strong bond with nature. It's more than a hobby, it enriches me in practical and spiritual ways.
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