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2800 Lumen Power: Fenix TK20R UE overview and test

Discover the Fenix TK20R UE a flashlight for true outdoor adventurers. Learn everything about its brightness durability and applications.

from Martin Gebhardt | Gear | no comment yet | reading time 5 Min
Updated on 10 July 2024 4.797 views 100% found this guide helpful
2800 Lumen Power: Fenix TK20R UE overview and test

Martin Gebhardt

From Martin Gebhardt. Check out my “About me” page.


👉 The key facts from this guide

  • The Fenix TK20R UE is a high-quality, rechargeable and robust flashlight, ideal for outdoor activities.
  • It offers a maximum brightness of 2800 lumens and a long range of 465 meters.
  • A6061-T6 aircraft-grade aluminum construction and IP68 water resistance ensure high durability.
  • Includes various lighting modes, including a tactical and operating mode with easy-to-use FlexiSensa Control.
  • Comes with Fenix ARB-L21-5000 (5000mAh) battery, supported by a battery level indicator.
  • The flashlight is recommended, but slightly heavy and for longer trips, a headlamp may be recommended.

If you are looking for a high-quality tactical flashlight, then the Fenix TK20R UE is definitely worth considering.

I received this lamp a few weeks ago and I have to say that I am quite impressed with what it has to offer.

This rechargeable rugged flashlight is not only super bright, but also has a long range, making it perfect for outdoor activities such as camping and hiking.

In this review, I will share my personal experiences with this flashlight.

You will also find the advantages and disadvantages so that you can make an informed decision before making a purchase.

Advantages and Disadvantages of the Fenix TK20R UE

I would rather not keep you waiting long, but I want to let you know right away what I like and what I don't like about the flashlight.

What I like about the Fenix TK20R UE:

  • The high-intensity SFT70-LED offers an incredibly bright and powerful light output.
  • The maximum light intensity of 2800 lumens is perfect for illuminating large areas or providing good visibility in the distance.
  • The included Fenix battery (Fenix ARB-L21-5000, 5000 mAh, 21700, 3.6 V, 18 Wh) has a long runtime and is rechargeable, which is super convenient.
  • The construction made of aircraft-grade aluminum of quality A6061-T6 makes this flashlight extremely robust and resistant to harsh conditions.
  • The waterproof and dustproof IP68 certification means that you can rely on this flashlight in any weather conditions.
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What can be improved:

  • The flashlight is a bit heavy for me.

As you can see, there isn't much that bothers me. However, the weight doesn't have to be a disadvantage - for my outdoor trips, I prefer a headlamp like the "Fenix HM61R v2.0 Headlamp" (here's my test and review of the Fenix HM61R v2.0 Headlamp).

Quick Summary

Overall, I am really impressed with the Fenix TK20R UE flashlight.

And that for the following reasons:

  • It offers a good number of features (but not too many!) that make it a reliable and powerful tool for outdoor enthusiasts.
  • The bright light output and long range make it an outstanding choice for anyone looking for a high-quality tactical flashlight.
  • The robust construction is great - especially important when you're out and about.
  • The high-quality craftsmanship of the metal parts: nothing protrudes, no sharp edges, everything slides smoothly, wonderful sealing rings
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My impression: the Fenix TK20R UE flashlight was well-thought-out by the developers and I can recommend it.

If you're looking for a reliable and durable flashlight that won't let you down, I recommend checking out the Fenix TK20R UE.

👉 You can find it here on Amazon.

Unboxing - What's included?

The fact is: The delivery was superfast and I received the product within 2 days after ordering. I ordered from Amazon.

In the box, I found the following items:

  • Fenix TK20R UE rechargeable LED flashlight
  • Fenix ARB-L21-5000 v2 battery
  • USB-C charging cable
  • Holster and lanyard
  • 2 x Spare O-ring
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Specifications at a glance

Below is a table with the most important facts

Material Aluminum, Premium Type III hard-anodized abrasion-resistant surface
Power Source Battery operated, USB-C charging port
Color Desert Camouflage
Item Weight 207 g (135 g without battery)
Battery Type ARB-L21-5000, Lithium-ion, 500 charging cycles
Batteries Required Yes
Batteries Included Yes
Light Output up to 2800 lm
Lamp Type LED, SFT70 (50,000-hour lifespan)
Maximum Beam Distance 465 meters
Product Dimensions 3.4 x 3.4 x 15.37 cm; 207 grams
Special Feature Long-range, Impact-resistant, Rechargeable, Adjustable Light Modes, High Performance
fenix tk20r ue taschenlampe test review 6

Documentation of the user manual

The included user manual was helpful in familiarizing myself with the various adjustable light modes and properly charging the battery.

It provides clear instructions and contributes to an overall positive experience.

fenix tk20r ue taschenlampe test review 5

Functions - That's what I find particularly important

The Fenix TK20R UE flashlight is equipped with a powerful Luminus SFT70 LED that provides a maximum brightness of 2800 lumens.

The LED ensures a bright and clear light, perfect for tactical uses or outdoor activities.

Furthermore, the LED is designed to be energy-efficient, so you can use it for longer without worrying about battery consumption.

fenix tk20r ue taschenlampe test review 3 led

The Luminus SFT70 LED also has a long lifespan, so you can rely on this flashlight for many years.

An overheating protection ensures that the LED is not damaged. If the LED reaches a temperature above 60 degrees, the lamp automatically reduces the lumens.

This flashlight is particularly useful for nighttime activities such as camping, bushcraft, survival, hiking, or hunting.

The high luminous intensity and energy efficiency make them a reliable light source in any outdoor environment.

Pro Tip: To maximize the performance of the Luminus SFT70 LED, keep the flashlight clean and free from dirt particles. This ensures a clear and powerful light output at all times.

fenix tk20r ue taschenlampe test review 7

2800 Max Lumen output power

The Fenix TK20R UE flashlight is characterized by an impressive maximum output of 2800 lumens, providing a strong and far-reaching light.

This makes them ideal for outdoor activities such as search and rescue operations, highly visible signaling, or even as a self-defense tool in poorly lit situations.

With this brightness, you can be sure that the Fenix TK20R UE will illuminate even the darkest environments.

fenix tk20r ue taschenlampe test review 8

A6061-T6 Aircraft Aluminum

The casing of the Fenix TK20R UE flashlight is made of A6061-T6 aircraft-grade aluminum, which allows for a sturdy and lightweight construction.

This material ensures that the flashlight does not compromise its performance even under the harshest conditions and demanding use.

The aluminum body also provides excellent heat dissipation, so the flashlight does not overheat.

fenix tk20r ue taschenlampe test review 9

Waterproof according to IP68, 2m depth and dustproof

The Fenix TK20R UE flashlight is designed to withstand the elements and is waterproof up to 2 meters according to IP68 standard and dustproof.

This means that you can use the flashlight under different weather conditions without having to worry about water or dust damage.

Whether you find yourself in a heavy rain shower or walking along a dusty trail, the Fenix TK20R UE will continue to shine brightly and prepare you for any situation.

Pro Tip: Although the Fenix TK20R UE is waterproof and dustproof, it is always advisable to securely close the charging port and battery compartment before coming into contact with water or dust. This additional precaution helps to maintain the longevity of the flashlight.

Different lighting modes

Once you've looked into the user manual, you'll know the functions for turning the flashlight on and off.

fenix tk20r ue taschenlampe test review 13

As you can see in the image above, there is a switch/wheel and a button. Fenix calls this system the "FlexiSensa Control" - it can be easily operated with one hand.

The round button is the tactical switch for immediate activation. The upper FlexiSensa control is the function switch for mode selection.

  • On/Off Switch
    Tap the tactical switch to turn on the light quietly and momentarily. When you release it, the light will turn off. Press the tactical switch all the way until you hear the "click" sound to keep the light on permanently. Pressing it again will turn off the light.
  • Mode Switching
    Rotate the FlexiSensa Control switch in any state to select the desired mode.
    • Tactical Mode: Tap the tactical switch while the light is on to switch between Turbo and Strobe. The light will remember the last selected output, including Strobe.
    • Operating Mode: Tap the tactical switch while the light is on to switch between Turbo → High → Medium → Low. The lamp will remember the last selected output.
    • Lockout/Off Mode: Rotate the FlexiSensa Control switch to the lockout mode in any state to turn off and lock the flashlight.
fenix tk20r ue taschenlampe test review 17

Here is an overview of the duration of luminosity:

ANSI/PLATO FL1 Tactical Mode Operating Mode
Turbo Strobe Turbo High Medium Low
Output 2800 Lumens 2800 Lumens 2800 Lumens 1000 Lumens 350 Lumens 30 Lumens
Runtime 3 h / 3 h 3 h
15 m
9 h 40 h
Intensity 53,880 Candela / 53,880 Candela 17,880 Candela 5900 Candela 490 Candela
Max. Range 465 Meters
Impact Resistance 1 m
Waterproof IP68, 2 Meters underwater

Charging the Battery

When charging, plug the USB-C charging cable into the socket and on the other side of the lamp you will now see the status.

The small status LED is displayed in red during the charging process and turns green when it is fully charged.

After completing the loading process, make sure to tighten the lamp head to maintain dust and water resistance.

fenix tk20r ue taschenlampe test review 16

The normal charging time of the included Fenix ARB-L21-5000 V2.0 battery is approximately 3.5 hours from complete discharge to full charge.

👉 The light is unfortunately not available during the charging process

👉 Attention: If the LED blinks red while charging, something is wrong! The wrong battery is inserted or incorrectly inserted.

Battery Level Indicator

I really like these features on high-quality bags and headlamps from Fenix.

I never have to worry about how long the lamp will continue to provide light.

Every time the light is turned on, the LED display opposite the USB-C charging port (turn the light head to see) shows the battery level for 3 seconds.

Here is the table:

Green light on full 100% - 85%
Green light blinking sufficient 85% - 50%
Red light on weak 50% - 25%
Red light blinking critical 25% - 1%

Note: This only works with rechargeable batteries from the Fenix ARB-L21 series.

Hidden USB-C charging port

Especially clever and I had to search for it first: the hidden USB-C charging port.

You have to turn the flashlight head clockwise for that.

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My Conclusion: The Lamp is Worth It

👉 My rating: 81 out of 100 points.

I have to say that the Fenix TK20R UE impressed me. The maximum light output of 2800 lumens provides a bright light that reaches far and is perfect for outdoor activities such as camping or hiking.

The fact that it is rechargeable and comes with a Fenix ARB-L21-5000 v2 battery (value approx. 25 €) included is a major advantage.

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The following batteries fit into the flashlight:

  • Fenix ARB-L21-5000 V2.0
  • Fenix ARB-L21-5000U
  • Fenix ARB-L21-4000P

Other types of 21700 batteries are not recommended.

Another outstanding feature for me is the robust construction of this flashlight. Made from A6061-T6 aircraft aluminum and waterproof and dustproof, I feel confident using it in various weather conditions without worrying about damage.

The design in desert camouflage also gives the flashlight's appearance a cool and unique touch.

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If you're looking for a high-quality, rechargeable tactical flashlight that provides ultra-bright illumination and a long range, I recommend the Fenix TK20R UE.

It is a reliable and durable tool that, in my opinion, meets the needs of outdoor enthusiasts and professionals.

Fenix TK20R UE Tactical Flashlight, 2800 Lumens USB-C Rechargeable 509 yards Long Throw Lumentac Organizer (Desert Camo)

Data updated 10 hours ago

Fenix TK20R UE Tactical Flashlight, 2800 Lumens USB-C Rechargeable 509 yards Long Throw Lumentac Organizer (Desert Camo)

  • POWERFUL TACTICAL FLASHLIGHT- Has a 2800 max lumen output with a 509 yard throw, making it perfect for patrol, EDC, and search and rescue.
  • USB-C FAST CHARGING - Recharges to full in 4 hours with a battery status indicator that reminds you when it is time to recharge. Offers a runtime of up to 40 hours once charged.
  • READY FOR ACTION - A toggle switch on the end cap enables single-handed operation to access three modes and six types of lighting.
  • DURABLE – Rated IP68 waterproof, 1-meter impact resistance, and fitted with double springs on both sides for ultimate dependability.
  • Contents: Fenix TK20R UE flashlight, ARB-L21-5000 V2.0, USB-C Charging Cable, Holster, Lanyard, and a Longhorn Tactical Organizer

no price can be determined (B0C7FN59C7)

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Take care, Martin
Martin Gebhardt

Author of the guide


Martin Gebhardt

Hey, I'm Martin. On my blog, you will learn the basics and numerous details about living in the wild. I think survival, bushcraft and the good life in nature are the keys to happiness. Find me here on Instagram or on YouTube. You can find more about my mission on the About Me page.

Since this is a gear guide, here ...


🤝8 reasons to trust my recommendation

  1. Practical Experience: I have tested most of the products I recommend under extreme conditions myself.

  2. Independence: As a wilderness mentor, I am not tied to any specific brands - this means my recommendations are unbiased.

  3. Expertise: My many years of experience allow me to understand the intricacies and details of various products that a layperson might overlook.

  4. Target group understanding: I understand the needs and challenges of outdoor enthusiasts, from beginners to seasoned experts.

  5. Quality focus: I attach great importance to quality and longevity. These are characteristics that are crucial in the wild.

  6. Clear communication: I try to explain the pros and cons of each product clearly and understandably so that you can make an informed decision.

  7. Currentness: I always keep my guides up to date and adapt them to new findings or products.

  8. Community Feedback: I work in wilderness schools, teach courses myself, attend courses and am active in various outdoor and survival communities and therefore integrate the feedback and experiences of others into my recommendations.

So when I introduce the best survival knives or flashlights, you can be sure that every recommendation is based on solid experience and extensive knowledge.

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Free 35 Survival Hacks you'll love!

You will get 35 easy-to-implement survival hacks so that you don't have to stand aimlessly in the forest from tomorrow when things get tough. Take your skills to the next level!

DOWNLOAD HERE FOR FREE