Fenix TK20R Rechargeable Flashlight

Rated 4.59 out of 5 based on 17 customer ratings
(17 customer reviews)

The Fenix TK20R micro-USB rechargeable flashlight delivers a maximum beam distance of over 1000 feet (310m) by utilizing the CREE XPL HI V3 LED with a maximum output of 1000 lumens. Powered by a rechargeable 18650 battery, this flashlight can also use two cold-resistant CR123As as standby batteries. Features included a dual layer body, inner waterproofing treatment, a tactical tail switch along with a side switch, and battery power indicator. This compact flashlight is designed for tactical and industrial applications.

$131.00 $99.95

4.59 out of 5
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Max Lumens: 1000
Modes: 5

Flashlight Size:
Length: 6.0” (151.5mm)
Diameter: 1.0” (25mm)
Head: 1.3” (34mm)

Flashlight Weight: 5.0 oz. (141g) excluding battery

Batteries: One 18650 rechargeable Li-ion battery (included)

Included: Fenix 3.6V/2900mAh 18650 rechargeable battery, USB charging cable, holster, lanyard, spare O-ring

Warranty: Limited Lifetime Guarantee from Fenix Lighting U.S.

MODE Lumens
Impact Resistance
Low-3500mAh 10 160h 102ft (31m) 240cd
Low-2900mAh 10 135h 102ft (31m) 240cd
Med-3500mAh 150 11h 413ft (126m) 3970cd
Med-2900mAh 150 10h 30min 413ft (126m) 3970cd
High-3500mAh 350 4h 20min 633ft (193m) 9310cd
High-2900mAh 350 4h 633ft (193m) 9310cd
Turbo-3500mAh 1000 2h* 1017ft (310m) 24000cd
Turbo-2900mAh 1000 1h 40min* 1017ft (310m) 24000cd
1m IP68, underwater 2m
Additional Features

*Due to the intelligent overheat protection, the runtime of Turbo is estimated.

  • Uses Cree XP-L HI V3 LED with a lifespan of 50,000 hours
  • Digitally regulated output maintains constant brightness
  • Low-voltage warning reminds when battery replacement/charging is needed
  • Reverse polarity protection to protect from improper battery insertion
  • Overheat protection to avoid high temperature of the surface
  • Tactical switch for momentary on and constant activation
  • Functional side switch for output selecion
  • Made of durable aircraft-grade aluminum
  • Premium type III hard-anodized anti-abrasive finish
  • Toughened ultra-clear glass lens with anti-reflective coating


Reviews (17)

17 reviews for Fenix TK20R Rechargeable Flashlight

  1. Rated 5 out of 5

    Stephen (verified owner)

    This TkR20 light is a very well made HD light , very bright and durable , it’s portable but packs a punch when you need it . If your looking for a true professional quality light look no further.

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  2. Rated 4 out of 5

    nick b. (verified owner)

    This light is great wish u could focus or flood the light i have multiple fenix lights and love them all costomer service is great

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  3. Rated 5 out of 5

    Anonymous (verified owner)

    This is the brightest small flashlight on the planet. Ideal for finding the dog in the dark yard at night. Easy to charge. Nice to be able to pop in regular batteries if need be. Bought two, one for daily use, one for the emergency kit. It’s a bit heavy, so not my choice for backpacking.

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  4. Rated 5 out of 5

    Chase (verified owner)

    Great flashlight. Fits my hand just right.

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  5. Rated 5 out of 5

    Zachary K. (verified owner)

    I think this might be the perfect all-around flashlight. Not too big and heavy to carry and use almost anywhere, but large enough and sturdy enough to have some serious brightness horsepower and ruggedness.

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  6. Rated 5 out of 5

    Wayne sides (verified owner)

    The TK20R is the best compact flashlight I have ever owned. Stands up to anything I throw at it. Keep up the good work Fenix

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  7. Rated 5 out of 5

    Dan Barden

    My newest Fenix Flaslight. I own 3, Tk20r, PD35, & an E12 that I carry all the time (my EDC).
    I have also gifted Fenix Flashlights, 12 so far.

    This TK20R is basically a PD35 that is Made Even Tougher with the added Feature of a USB port for charging simplicity. TK20R also has an integrated battery status built into the side switch.
    At 1000 Lumens and a long throw it is a great camping flashlight & security light for looking for Eyes of a predator looking for a Meal. I live in Mountain Lion country & Bears visit occasionally looking for scraps mistaking put into my garbage.

    I highly recommend the TK20R!!

    Next Fenix – The LD15R!
    Then, a TK75 award winning Flashlight.

    Great Flashlights & many to choose from to suit most any need!!

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  8. Rated 5 out of 5


    Awesome flashlight!
    Nice and bright and light weight. Easy to use with a push of a button you can easily go through all the settings.
    Fenix lights are definitely worth the money.

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  9. Rated 5 out of 5

    Han Kim (verified owner)

    I have tried other brands that are lot more expensive. Fenix lights are affordable yet delivers what it states.
    I love TK20R for its size and brightness.
    No regrets

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  10. Rated 3 out of 5

    Travis Sheldon

    I’ve had my light for about 6 months and it has worked great. Only issue is now when using my rechargeable battery the indicator light will turn to orange and my tail switch and side switch traded functions. This is a problem because the side switch gets depressed in my pocket and the light runs dead quickly. Please help. I put regular batteries in place of my 2900 battery and it works fine. Do I need a new battery? Or did a function get messed up?

    2 out of 2 people found this helpful. Was this review helpful to you?
  11. Rated 5 out of 5

    Chris (verified owner)

    Wow For starters this light is very tuff and bright as hell upgrading from an old 80 lumen light to this beast is very nice light is everything as expected bright far range throw and can handle being thrown around from time to time. if your planing on buying a light from fenix buy this one best for price and brightness and throw/range for the beam.

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  12. Rated 2 out of 5

    Chris Smith (verified owner)

    This is a positive and negative review for this light. I bought it after considerable discussion with a helpful rep from Fenix directly. My concern was that, as I was going to use it for sailing, that the seal that covered the USB port in the back of the unit was indeed watertight. I am a blue water sailor, and hard use and resistance to salt water is imperative. I was assured that it was indeed fit my criteria. Also, I was concerned that the original 950 lumens (50 lower than the PD35) would be noticeable. I was assured that in “real life” it would not be evident. I notice that the new ads for this unit say that it is 1000 lumens rated. Not sure whether there was a change in the bulb or design, but at least the “original” unit certainly seems “daylight” to me. All positives! Now for the negative. I sailed from Hawaii to Anacortes recently, and had some blowy days and nights sailing. My light failed after a day or so – it would not go on in any mode – I did find out that by unscrewing the base section, it would go on in one mode, but that opened it up to additional damage. What caused the failure? The rubber flap that seals the USB port came out and salt water spray got in – and as those that deal with salt water know, salt water and electronics do not agree. The seal is just NOT a good design. Pulling it out and pushing it in the storm pockets in my foul weather gear at night must have been the action/s that caused the failure. Astonishing bad design, in fact. It slightly protrudes over the edge of the barrel and so can get pushed out of its sealed position easily. I believe that is what happened in my case. Secondly, the base of the rubber piece that goes into the aluminum base is not robust. It has one rib in the rubber – the rubber insert part should have at least three so that the ribs can be forced down into the cavity and really have to be pulled to get it out. So: 1) tab used to pull open rubber protective flap bad design; 2) and ribs on seal itself inadequate.
    When I saw the light, I thought that this might be a problem, but hoped for the best – I had no time to return it, so took a chance. Fortunately I had a dive light on the boat and so used that.
    While I was out of warranty, the gentleman who answered the call did replace the unit with a TK15 unit that hopefully will do a better job. Not quite what I wanted, but OK. Good for customer service to step up though.
    So… I’m not sure if Fenix will publish this review, as it is negative and points out a failure with their design (for rugged and/or water use). We will see.

    4 out of 4 people found this helpful. Was this review helpful to you?
  13. Rated 5 out of 5


    Top performance whenever needed. Good hand ‘fit’, my first choice in lights everyday, PERIOD.

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  14. Rated 5 out of 5


    Love my TK20R. It is my first tactical light and so far I’ve had it for six months and I have exactly 0 complaints.
    I carry it in the included nylon holster on the side of my backpack and I use it almost everyday.
    Great battery life and design.
    Very durable constuction.
    Great ergonomics.

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  15. Rated 4 out of 5

    AS1 player

    Great light. I use it for outdoor, camping, home and…airsoft. That’s why I bought a ‘tactical’ light with strobe function. The only gripe is that the mode memory does not remember the strobe setting… something that’s hard to understand because tactical situations are the only situations in which one does not have time to select the desired mode… an updated model which remembers strobe would be a reason to trade this one in…

    1 out of 1 people found this helpful. Was this review helpful to you?
  16. Rated 5 out of 5

    Kevin B.

    Got this to replace my TK22 after it was lost. I love this light every bit as much. Despite the smaller head diameter I was still very impressed with the beam width. Walking down the street or in a hallway, it provides an amazing periphery to see. The central beam has even better throw than my TK22, I can see clearly much further. Both are amazing flashlights but I really like the USB charging, though rarely used since I have a battery charger for 18650’s but in a pinch or traveling it’s a huge help.

    After buying my first Fenix light, I’ve been so impressed I’ve continued to come back. My TK20 has shown to be no different.

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  17. Rated 5 out of 5

    Scott perlowski

    My tk20r just arrived today, free shipping, two days. AWESOME! It’s everything that is advertised. This flashlight is everything you need in a compact tactical flashlight. I’ll be using it for hunting and every day use. Can’t wait to show it off to my hunting buddies.

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Add An Accessory

  • Transform your Fenix light into a reading, signal or emergency light.  Attachment is quick and secure with materials designed for field use. Innovative design allows tip stand on any flat surface.
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  • 18560 rechargeable batteries are the highest volume standard battery used in lighting products. They are a great alternative for products that utilize 2xCR123A disposable batteries. Not only are you being environmentally friendly by eliminating disposable batteries, 18650 rechargeable battery provides different levels of capacity for your exact need. For example, you can get 30% more capacity out of a ARB-L18-3500 compared to a ARB-L18-2600.

    In addition, Fenix batteries are built with safety in mind. There are built in features to prevent short circuits, design multiple layers of protection and the new button-top design. The high capacity 18650 Li-ion rechargeable batteries each provide protection circuits in the anode to help prevent short circuits, over charge/discharge and over heating. Each battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion.

    See our wide range of products that accommodate the 18650 batteries: 18650 Fenix Products 


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  • The Fenix ARE-X2 is dual-channel smart charger, built for different types, and different size, rechargeable batteries. The charger will automatically choose the correct charging mode for each battery type, whether it be Li-ion, Ni-MH or Ni-Cd. The ARE-X2 also features a USB port which allows you to charge other devices from charged Li-ion batteries on the unit (Ni-MH/Ni-Cd batteries cannot charge devices).

    The Fenix ARB-L18-3400 is a high capacity 18650 Li-ion rechargeable with a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. The battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion.



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  • Quickly attach/detach your flashlight to your gun’s rail with the Fenix ALG-00 rail mount’s quick release rail clips. The adjustable diameter allows you to use any flashlight that is 0.9”-1.02” (22.5-26mm) in diameter. The ALG-00 is made of precision machined aluminum with an anodized black matte finish. It includes an anti-skid rubber cushion to maintain a firm hold of your flashlight.


    Compatible with: TK32, TK20R, TK16, TK15UE, TK09, PD35 TAC, PD35, PD32, E35UE, RC20, RC11, UC35, UC30, SD20, SD11

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  • Fenix Filter Adapter improve night-time visibility and avoid easy detection with the red filter adapters.  Durable with an anti-roll design, they improve map reading, navigation and tracking.
    Compatible with: PD40R, TK09, TK15UE, TK16, TK20R
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  • Enable the TK16, TK25, TK25 Red, TK25RB, TK25 IR, and TK32 Flashlight to become the perfect accessory for your rail supported mount.  The AER-03 features the ability to select momentary on, constant on, and mode/output selection.  NEW noiseless (no clicks) design keeps your operation silent when pressing switches to operate the light.  Recommend to use this product along with ALG-01 rail mount.


    • For use with TK16, TK25, TK25 Red, TK25RB, TK25 IR, and TK32 flashlights
    • Velcro cushion for quick attaching
    • Noiseless pressure pad switch (30 mm long) with a lifespan of 100,000 activations
    • Tactical round switch features momentary-on/constant-on illumination
    • Tail adapter is made from T6-grade aluminum, type III hard-anodized anti-abrasive finish
    • Cable made from resilient PU material can be extended from 24cm to 80cm
    • Waterproof to IPX-8 standard
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  • The Fenix ARE-X1 is dual-purpose smart charger capable of charging and discharging. You can use the ARE-X1 and its included battery as a power bank to recharge other devices. Compatible with 18650 or 26650 rechargeable Li-ion batteries, the ARE-X1 battery charger is perfect for keep all of your rechargeable batteries and devices at full charge.

    • Compatible with 18650 and 26650 Li-ion rechargeable batteries
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    • Built-in multi-protection circuit
    • Includes Fenix 2600mAh 18650 rechargeable battery
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