Fenix TK20R v2.0, 3000 Lumen, 21700 Powered, USB-C Rechargeable, APF Flashlight, Black

Product Information

Low-voltage Warning When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until Eco output is reached. When this happens in Eco output mode, the light blinks 3 times every 5 minutes toremind youto timely recharge or replace the battery. Note: This only works with Fenix ARB-L21 series 21700 rechargeable Li-ion battery.

The normal charging time of the included FenixARB-L21-5000 V2.0is approximately 3.5 hours from depletion to full charging.Note: *The turbo output is measured at total run-time, including output at reduced levels due to temperature or the built-in protection mechanism. The over-heat protection will drop the turbo brightness level if the internal temperature reaches 60°C. The normal charging time of the included Fenix ARB-L21-5000 V2.0 is approximately 3.5 hours from depletion to full charging. If the lamp will not be used for an extended period, remove the battery, or the lamp could be damaged by electrolyte leakage. This new model upgrades the outgoing Fenix TK20R with an increase in output from 1,000 to 3,000 lumens, an increase in beam range from 310 to an impressive 475 meters, tailcap dual switch system, 5000 mAh Fenix 21700 battery and Fenix advanced Digital Pulse Transmission signal system for a combination of ultimate power output and switch reliability. This new model upgrades the outgoing Fenix TK20R with an increase in output from 1,000 to 3000 lumens, an increase in beam range from 310 to an impressive 475 meters, tailcap dual switch system, 5000 mAh Fenix 21700 battery and Fenix advanced Digital Pulse Transmission signal system for a combination of ultimate power output and switch reliability.

Fenix doesn’t conceal the identity of the LEDs they use, which I think is a nice concesion for consumers who care about such things. Whereas the majority of Fenix’s higher output lights are fielding the Luminus SST70, for the TK20R V2 it’s been booted in favor of its domeless stablemate, the SFT70. This is an entirely new LED, and hasn’t had much exposure in the flashlight continuum. I can’t find a data sheet for this LED, and I haven’t seen it featured in any other mainstream lights besides the Olight Warrior 3 and 3S. I do know it’s a 5050 (5mm x 5mm) footprint, so it fits anywhere the SST70 fits, and it runs on 6 or 12 volts. Like the SST70, it retains the quad die arrangement on a single substrate. The dies are pretty close together, but not as close as something like an XHP35 HI, and the design is similar to the SFT-40-W in that the bond wires are embedded in the substrate. This helps current handling and heat dissipation at higher drive currents. Compatible with Fenix accessories: Rail Mount (ALG-00), Remote Switch (AER-05), Traffic Wand (AOT-M), Filter Adaptor (A0F-M (AD302)), Diffuser Tip (A0D-M) Fenixlight Limited was formed in 2001 by a group of enthusiastic young engineers intent on improving upon the lighting products then available. Turbo: 3000 lumens (overheat protection brightness step down after approx 50 seconds from cold), 475m beam. Full power can be re set when the torch cools.

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Q6. Why does the TK20R UE downshift to a lower mode after being used for a while and the higher mode cannot be selected? When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until Eco output is reached. When this happens in Eco output mode, the light blinks 3 times every 5 minutes to remind you to timely recharge or replace the battery. This what I’ve come to expect from higher-end Fenix lights using the SST70 LED with a boost driver: Excellent regulation and laminar runtime graphs. Although this isn’t an apples-to-apples comparison, judging from the graphs, it seems as though there haven’t been many meaningful performance gains with this new LED versus the older SST70 in real-world use. Professional users demand consistent light output, and the TK20R V2 delivers here. The thermal regulation is excellent as well, with zero drama, sawtooths and consistent output. The light was also hand-holdable throughout the Turbo test as well, and if you need Turbo, reactivating it is possible once it cools off. I also like the fact that there’s visual LVP in addition to the LED indicator: After the last step down, the light blinks 3 times every 5 minutes until shut down.

Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare. Do NOT shine flammable objects at close range, to avoid burning objects or causing danger due to high temperature! For weapon mounted use the TK20R V2.0 is compatible with the Fenix ALG-00 gun mount and the AER-05 tactical pressure switch. The batter indicator is hidden under the collar which also covers the USB Type-C port for charging. Its location is somewhat unusual, but it adds to the overall minimalistic design of the flashlight. We are the home of Fenix lighting products in the United Kingdom, supplying a network of UK retailers, companies and individual customers from our base in Cardiff.

A:Fenix ARB-L21-5000 V2.0 is recommended. Other Li-ion batteries are not recommended. As an unmatched battery may cause the flashlight to fail to work normally.

Medium was uneventful and not surprisingly ran a long time. The output was better than 250 Lumens for almost 6 hours, and the last step down happened at 6 hours 13 minutes, but it kept running for another 3.5 hours. Fenix specified 7 hours for this runtime. The light memorizes the last selected output excluding strobe. When turned on again the previously used output of general mode will be recalled. It is prohibited to use 18650, 16340 or CR123A batteries. * 21700 Li-ion batteries are powerful cells designed for commercial applications and must be treated with caution and handled with care. Only use quality batteries with circuit protection will reduce the potential for combustion or explosion; but cell damage or short circuiting are potential risks the user assumes.You likely know that this flashlight is a powerful everyday carry flashlight that you can charge with a USB-C–but how does it perform? I used the Fenix TK20R V2.0 for over a month, through a power outage, and as my go-to flashlight as I worked in the woods. What’s in the Box?