Fenix LR35R Pro Reference ManualUpdated a day ago

The Fenix LR35R Pro is a palm-sized searchlight with dual spotlight/floodlight white output plus red light and UV inspection light, powered by two 21700 batteries. This summary is drawn from the manufacturer's official user manual — see the downloadable PDF reference manual on the product page for complete details.

Warning

Do not place this flashlight in the reach of children.
Do not shine the flashlight directly into anyone's eyes.
Do not place the flashlight head near flammable objects — high temperatures can cause objects to overheat and become flammable/ignite.
Do not use the flashlight in inappropriate ways such as holding the unit in your mouth; doing so could cause serious personal injury or death if the light or internal batteries fail.
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.
Turn off and lock the flashlight or remove the batteries to prevent accidental activation when placed in a closed and flammable environment such as pockets and backpacks.
The LEDs of this flashlight are not replaceable; the whole light will need to be replaced when any one of the LEDs reaches the end of its lifespan.
Wear certified UV protection goggles when using the UV light.

Overview

10,000 lumens maximum output, 500 meters maximum beam distance.
Uses four Luminus SFT25, eight Luminus SST25, two OSRAM GR QSSPA1.23, and one SST-10-UV LED, each with a lifespan of 50,000 hours.
Dual light source: 5,000-lumen, 500-meter spotlight, and 8,000-lumen floodlight.
365 nm UV light with 3.7 W of optical power for large-area, long-distance, high-accuracy UV detection.
Red light for night reading and protecting night vision; red flash for alerting and asking for help.
Electronic switch for mode switching and toggle switch for stepless brightness regulation.
Powered by two large-capacity 6000mAh 21700 batteries, providing a max runtime of 135 hours.
USB Type-C port supports 18W fast charging and fast discharging.
Intelligent brightness downshift function avoids danger caused by high temperature.
Stainless steel strike bezel inlaid with three tungsten steel breaking tips for quick window breaking.
Lockout function prevents accidental activation.
Size: 5.63" x 2.17" x 1.83" / 143 x 55 x 46.5 mm. Weight: 16.12 oz / 457 g (including batteries).

Operating Instructions

On/Off: With the light locked, rotate the toggle switch clockwise to turn it on; with the light unlocked and off, press and hold the electronic switch for 0.5 seconds to turn it on. Rotate the toggle switch all the way counterclockwise, or press and hold the electronic switch for 0.5 seconds, to turn it off.

Mode Switching: With the light on, single click the electronic switch to cycle through Spotlight→Floodlight→Spot-and floodlight mode. With the light off or locked, double click the electronic switch to enter Red light mode, then single click to cycle Red light→Red flash→UV light mode; press and hold for 0.5 seconds to exit and turn off.

Strobe & SOS: With the light unlocked, press and hold the electronic switch for 1.2 seconds to enter Strobe mode; single click to switch between Strobe and SOS; press and hold again for 1.2 seconds to exit.

Output Selection: Rotate the toggle switch for stepless brightness regulation in Spotlight, Floodlight, Spot-and floodlight, Red light, Red flash, and UV light modes.

Lock/Unlock: With the light unlocked, rotate the toggle switch all the way counterclockwise to lock it. With the light locked, rotate the toggle switch clockwise to unlock and turn it on.

Intelligent Memory Circuit: The flashlight automatically memorizes the last selected mode excluding Strobe and SOS. Turning on by the toggle switch or a 0.5-second electronic switch press recalls the last Spotlight/Floodlight/Spot-and floodlight mode; a double click recalls the last Red light/Red flash/UV light mode. Note: the flashlight does not memorize the previously used brightness level.

Battery Specifications

Fenix ARB-L21 series (21700, 3.6V): Recommended.
Rechargeable Battery, Li-ion (21700, 3.6V): Caution — do not use a 16340 or 18650 battery.
Rechargeable Battery, Li-ion (18650, 3.6V): Banned.

Do not mix batteries of different brands, sizes, capacities, or types. 21700 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 could lead to combustion; using quality batteries with circuit protection reduces this risk.

Battery Replacement

Unscrew the light body and insert the batteries with the anode side (+) towards the light head, then screw the light body back on. The flashlight can be used with only one battery inserted, but brightness will be affected.

Charging

Turn off the flashlight and open the anti-dust cover, then connect the USB Type-C end of the charging cable to the light and the other end to a charging adapter. When charging, the five indicators flash green left to right; normal charging time is about 4 hours from depleted to full. The LR35R Pro recognizes PD3.0, PD2.0, other fast-charging protocols, and standard 5V adapters (max charging current 3A, 2.5A on 5V input). Do not charge the flashlight if there is no battery inserted.

Battery Level Indication

With the light off (locked or unlocked), single click the electronic switch to check the battery status; the indicator(s) also show on power-on and last 3 seconds.

Five lights on: 100% - 80%.
Four lights on: 80% - 60%.
Three lights on: 60% - 40%.
Two lights on: 40% - 20%.
One light on: 20% - 1%.

Low-Voltage Warning

When the voltage level drops below the preset level, the flashlight downshifts to a lower brightness level until the lowest output is reached. When this happens, one battery level indicator blinks to remind users to recharge or replace the batteries.

Intelligent Brightness Downshift Function

When the light head is close to an illuminated object (about 60 mm) for more than 1.5 seconds, the flashlight automatically downshifts to 50 lumens to avoid danger caused by high temperatures. When the light head is away from the object for more than 0.8 seconds, the flashlight recalls the previously used brightness level. To turn this function on or off, lock the light and press and hold the electronic switch for 6 seconds — two blinks on Floodlight Low means enabled, six blinks means disabled.

Intelligent Overheat Protection

The flashlight will accumulate heat at high output levels for extended periods. When it reaches 55°C/131°F or above, it automatically steps down a few lumens to reduce temperature, and gradually recalls the preset output level once the temperature drops below 55°C/131°F.

Technical Parameters

Spotlight High: Output 5,000 lumens, Runtime 2h43min*, Distance 500 meters, Intensity 62,260 candela.
Spotlight Low: Output 30 lumens, Runtime 135 hours, Distance 40 meters, Intensity 354 candela.
Floodlight High: Output 8,000 lumens, Runtime 2h40min, Distance 213 meters, Intensity 11,333 candela.
Floodlight Low: Output 50 lumens, Runtime 103 hours, Distance 15 meters, Intensity 182 candela.
Spot-and floodlight High: Output 10,000 lumens, Runtime 2h38min, Distance 445 meters, Intensity 48,844 candela.
Spot-and floodlight Low: Output 80 lumens, Runtime 60h31min, Distance 42 meters, Intensity 433 candela.
Red light High: Output 260 lumens, Distance 46 meters, Intensity 537 candela.
Red light Low: Output 10 lumens, Distance 10 meters, Intensity 28 candela.
UV light (max optical power): 3.7 W, Runtime 20h8min.
Strobe (Spot-and floodlight): 10,000 lumens.
SOS (Spotlight): 30 lumens, Runtime 270 hours.
Impact Resistance: 1 meter.
Waterproof: IP68.

Note: The above specifications are from Fenix laboratory testing using two ARB-L21-6000 (21700) batteries under a temperature of 21±3°C and humidity of 50% - 80%. Stepless brightness regulation is available in all modes except Strobe and SOS. *The High output is measured in total of runtime including output at reduced levels due to temperature or protection mechanism.

Usage and Maintenance

Disassembling the sealed head can cause damage to the light and will void the warranty.
Fenix recommends using excellent quality batteries.
If the light will not be used for an extended period, remove the batteries, or the light could be damaged by electrolyte leakage.
Lock the light, unscrew the light body half a turn, or take out the batteries to prevent accidental activation during storage or transportation.
Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare.
Periodic cleaning of the light and battery contacts improves performance as dirty contacts may cause flickering or failure to illuminate: the flashlight may be locked (unlock by rotating the toggle switch clockwise); the battery level may be poor (recharge or replace); or the contacts may be dirty (clean with a cotton swab soaked in rubbing alcohol).
If the above methods don't work, please contact the distributor.

Included

Fenix LR35R Pro flashlight, 2 x ARB-L21-6000 batteries, USB Type-C charging cable, Holster, Lanyard, Spare O-ring, User manual, Warranty card.

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