The Fenix TK11 Pro is a law enforcement and duty flashlight with 1650 lumens maximum output and a 360 meter maximum beam distance. This summary is drawn from the manufacturer's official user manual. See the product page for current details.
Technical Parameters (ANSI/PLATO FL1)
- High: 1650 lumens, 1 hour 30 minutes*, 360 meters, 32,700 cd
- Med: 500 lumens, 5 hours, 185 meters, 8,620 cd
- Low: 30 lumens, 86 hours 45 minutes, 45 meters, 520 cd
- Strobe: 1650 lumens
Impact Resistance: 1 meter. Submersible: IP68. *The High output runtime is measured as a total including output at reduced levels due to the built-in temperature protection mechanism. Specifications are from Fenix's laboratory testing using one Fenix ARB-L18-3400U V3.0 battery at 21±3°C and 50-80% humidity; real-world performance may vary with working environment and the actual battery used.
Safe Use Warnings
- Do not place this flashlight within reach of children.
- Do not shine this flashlight directly into anyone's eyes.
- Do not place the light head near flammable objects. High temperatures can cause objects to overheat and become flammable or ignite.
- Do not use this flashlight in inappropriate ways, such as holding the unit in your mouth. Doing so could cause serious personal injury or death if the flashlight or internal battery fails.
- This flashlight will accumulate a significant amount of heat while operating, resulting in a high temperature of the light shell. Pay close attention to avoid burns.
- Remove the battery to prevent accidental activation when the flashlight is placed in a closed and flammable environment such as pockets and backpacks.
- The LED of this flashlight is not replaceable; the whole flashlight will need to be replaced when the LED reaches the end of its lifespan.
Product Features
- 1650 lumens maximum output, 360 meters maximum beam distance.
- Utilizes one Luminus SST40 LED with a lifespan of 50,000 hours.
- Powered by one ARB-L18-3400U V3.0 battery and compatible with two CR123A batteries.
- Fast, single-handed operation and Instant Strobe with the dual tail switch.
- Made of durable A6061-T6 aluminum.
- Premium type HAIII hard-anodized anti-abrasive finish.
- Size: 5.41" x 1.34" x 0.93" / 137.5 x 34 x 23.5 mm.
- Weight: 5.61 oz / 159 g (including battery).
Operating Instructions
On/Off: Tap the tactical switch to momentarily turn on the light; release and the light will go out. Fully press the tactical switch to constantly turn on the light, and fully press it again to turn off the flashlight.
Output Selection: With the light switched on, single click the functional switch to cycle through Low→Med→High.
Strobe: With the light switched off, click the functional switch to enter strobe; release and the light will go out. With the light switched on, press and hold the functional switch for 0.5 seconds to enter strobe. Single click the functional switch again to recall the previously used output, or fully press the tactical switch to turn the flashlight off.
Intelligent Memory Circuit: The flashlight memorizes the last selected output, excluding Strobe. When turned on again, the previously used output will be recalled.
Battery Specifications
- Fenix ARB-L18: 18650, 3.6V — Recommended
- Non-rechargeable Battery (Lithium): CR123A, 3.0V — Emergency only
- Other Rechargeable Battery (Li-ion): 18650, 3.6V — Use with caution*
*18650 Li-ion batteries are powerful cells designed for commercial applications and must be treated with caution and handled with care. Using low-quality batteries or mishandling batteries (such as short-circuiting or overheating) could lead to combustion and jeopardize the safety of users and property. Any adverse effects resulting from the use of low-quality batteries are not covered by any Fenix warranty or liability. Using quality batteries with circuit protection will reduce the potential for combustion or explosion.
Battery Replacement
Unscrew the tail cap and insert the battery with the anode side (+) towards the light head, then screw the tail cap back on.
Charging
- Unscrew the tail cap and remove the battery, then connect the USB Type-C end of the charging cable to the charging port of the battery.
- The indicators of the battery will display red while charging and will turn blue when fully charged.
Intelligent Overheat Protection
The flashlight will accumulate a lot of heat when used at high output levels for extended periods. When the flashlight reaches a temperature of 52°C/125.6°F or above, it will automatically step down a few lumens to reduce the temperature. When the temperature drops below 58°C/136.4°F, the flashlight will gradually recall the preset output level.
Low-Voltage Warning
When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until Low output is reached. When this happens in Low output, the flashlight blinks 3 times every 5 minutes to remind users to recharge or replace the battery in a timely manner. *This only works with a Fenix ARB-L18 Series rechargeable battery.
Usage and Maintenance
- Disassembling the sealed head can cause damage to the flashlight and will void the warranty.
- Fenix recommends using an excellent quality battery.
- If the flashlight will not be used for an extended period, remove the battery, or the flashlight could be damaged by electrolyte leakage.
- Remove the battery to prevent accidental activation during storage or transportation.
- Long-term use can result in O-ring wear. To maintain a proper seal, replace the O-ring with an approved spare.
- Periodic cleaning of the battery contacts improves performance, as dirty contacts may cause the flashlight to flicker or even fail to illuminate. A. Low battery level — replace or recharge the battery. B. The contact or contact point of the battery or flashlight is dirty — clean the contact points with a cotton swab dipped in alcohol. If the above methods don't work, please contact Fenix Store support through live chat (the chat button on any page of fenix-store.com) or at support@fenix-store.com.
What's Included
- Fenix TK11 Pro flashlight
- ARB-L18-3400U V3.0 battery
- USB Type-C charging cable
- Lanyard
- Holster
- Spare O-ring
- User manual
- Warranty card
Warranty and Support
Keep your proof of purchase and contact Fenix Store support through live chat (the chat button on any page of fenix-store.com) or at support@fenix-store.com for warranty service. See our Warranty and Repair page (https://www.fenix-store.com/pages/warranty-info) for details.
