Fenix TK21R rechargeable flashlight, 3600 lm, black
Discover the Fenix TK21R tactical flashlight, designed for those who demand absolute reliability and top-tier performance. With an impressive luminous flux of up to 3600 lumens (ANSI) and a beam distance of up to 480 meters, it provides perfect visibility in any situation. Power is supplied by a high-capacity 21700 6000 mAh Li-ion battery, included in the package, which recharges directly within the flashlight via a modern USB-C port. This port is protected by a carefully designed screw cap, ensuring resistance to water, dust, and dirt even in extreme environments. The battery is ready to deliver power for over 72 hours of continuous illumination. Thanks to its robust and waterproof design, this tactical flashlight is an ideal partner for demanding outdoor conditions, professional use, law enforcement, and hunting activities. Intuitive operation is ensured by a dual tactical switch, allowing for instantaneous response in critical situations – whether you need to quickly activate the strobe for disorientation or immediately switch to full brightness. The flashlight head is equipped with a stainless steel strike bezel, further enhanced with three tungsten alloy tips. This makes the Fenix TK21R not only a powerful light source but also an effective tool for emergency glass breaking or self-defense.
All flashlight parameters (luminous flux, battery runtime, waterproofness, beam distance, and impact resistance) are measured in accordance with the ANSI/NEMA FL 1-2009 standard.
Fenix TK21R LED Flashlight Parameters
- Features a powerful Luminus SFT-90 LED with a lifespan of 50,000 hours.
- Five output modes: burst 3600 lumens (2.5 hours*) -> 1000 lumens (3.5 hours) -> 350 lumens (7.5 hours) -> 30 lumens (72.5 hours) -> strobe 3000 lumens (variable frequency strobe).
- *Runtime in Burst mode includes total time, including reduced output after overheat protection is activated.
- Parabolic aluminum reflector for a perfect beam with a range of 480 meters (58,000 cd).
- Powered by a 21700 6000 mAh Li-ion battery (included in the package).
- Max. battery diameter 22.0 mm, max. battery length 77.0 mm.
- Electronics with digital output control and reverse battery polarity protection.
- Dual spring system – high flashlight durability when used on a firearm.
- Intelligent overheat protection.
- Dimensions: 15.35 cm (length) x 3.6 cm (head diameter) x 2.54 cm (body diameter).
- Weight: 221.4 grams including battery.
- Made from A6061-T6 aircraft-grade aluminum.
- Impact resistant from a 1-meter drop.
- Wear-resistant trapezoidal threads.
- The flashlight has memory and will always turn on in the last used mode (does not apply to strobe).
- Durable, hard-to-scratch surface - Type III hard anodized.
- Waterproof and dustproof according to IP68 standard (tested underwater at a depth of 2 meters for 30 minutes).
- Hardened ultra-clear glass lens with anti-reflective coating.
- Dual tactical tail switch (momentary on/off function).
- Sturdy clip for secure and easy carrying (removable).
- The flashlight's design prevents it from slipping in hand and rolling when placed down.
- Included accessories: Fenix ARB-L21-6000 battery, USB-C charging cable, wrist lanyard, belt holster, and spare O-ring.
- Optional accessories available for purchase: Fenix ALR-01 tactical ring, AER-05 or AER-04 remote pressure switch (without strobe, max output limited to 1200 lm), AOD-M white diffuser, AOT-04 white and red traffic wand.
- The following accessories are also compatible with the flashlight: ALG-16 M-LOK mount, ALG-15 quick-release Picatinny mount, ALG-00 quick-release Picatinny mount, metal magnetic head mount, plastic magnetic head mount, scope mount, metal scope mount, Fenix ALD-05 helmet strap, Fenix bike mount, ALP-10L holster, ALP-20 holster.
Fenix TK21R Flashlight Operation
The flashlight may come with an insulating cap inside the battery compartment from the factory. Remove it from the battery before first use.
To turn on, press the larger tactical button on the tail of the flashlight; for momentary activation, gently hold the button. By pressing the secondary mode switch button, you can cycle through the output modes at any time during operation. To switch to strobe mode while the flashlight is on, hold the mode switch button for approximately 0.5 seconds. To turn on the flashlight directly into strobe mode, press and hold the mode switch button. The BURST mode (3600 lumens) can also be activated at any time by holding the main tactical button for 0.5 seconds.
Memory for last used mode - The flashlight has memory and will always turn on in the last used mode, except for strobe.
Battery Replacement - Unscrew the tail cap of the flashlight and insert the battery with the positive pole facing inwards. Then, fully tighten the tail cap again.
Charging - Loosen the protective nut under the flashlight head to expose the charging port and connect the USB-C charging cable to the flashlight's charging connector. After charging is complete, retighten the nut. Using a powerful 9V/3A USB source will charge a fully depleted battery in 1.5 hours; using a 5V/3A USB source will charge it in 2.5 hours. The flashlight cannot be used while charging. The indicator light is red during charging and turns green when fully charged. If charging fails or the battery is inserted incorrectly, the indicator will flash red or not light up at all.
Intelligent Overheat Protection - Due to the flashlight's high output of 3600 lumens, it generates heat. If the temperature exceeds 55°C, the output will automatically decrease. Once the temperature drops below 55°C, the output will automatically increase again.
Battery Level Indication - After each activation of the flashlight (except strobe), the battery level indicator near the charging port will light up for 3 seconds. If the indicator LED is green, the battery is charged to over 85%. Flashing green indicates 50-85% capacity. If it is red, it is charged to 25-50%. Flashing red means less than 25% battery capacity remains.
Low Battery Warning - The flashlight will gradually and automatically switch to the lowest output mode, or if already in the lowest mode, it will flash 3 times every five minutes.
Notice
- Use only high-quality 21700 rechargeable batteries with protection circuits.
- Do not shine the light on flammable objects at close range to avoid damage or fire due to high temperatures!
- Remove the battery or loosen the tail cap to prevent accidental activation during storage or transport in an enclosed space.
- Keep this flashlight out of reach of children and do not shine it directly into anyone's eyes!
- Insert batteries with the positive pole facing towards the flashlight head.
- If the rubber O-rings appear damaged after prolonged use, replace them. The O-rings should also be lubricated to prevent rubber erosion. Following these guidelines will ensure the flashlight is properly protected against water.
- If the flashlight is flashing, not switching to higher output modes, or not turning on, it may be due to one of the following reasons:
- The battery is depleted – charge or replace it.
- The contacts inside the flashlight are dirty – clean them with a cotton swab dipped in alcohol.
- The head, body, or tail cap of the flashlight is loose – tighten them.
Output: 3600lm
Max. Runtime: 60h
Beam Distance: 330m
Number of Modes: 5
Weight: 197g
Power Source: 1x 21700
Light Source: Luminus SFT-90
Waterproof: IP68 (2m submersible)
| Colour | black |
| Power supply type | USB-C |
| Battery type | rechargeable |
| Sport | hiking, camping, lifestyle |
| product ID | 352831 |
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