Operating Instructions

On/off
Press and hold the electronic switch for 0.5 seconds to turn on/off the flashlight.

Mode switching
Turn the toggle switch to select the needed mode. indicates the General mode (main light), R/B indicates the Red/blue light mode (side lights), and  indicates the White light mode (side lights).
With the light unlocked, press and hold the electronic switch for 1.2 seconds to switch to the Strobe mode. Single click it again to return to the previously used output of the mode that the toggle switch is set to.

Output selection
Main light (General mode): with the light turned on, single click the electronic switch to cycle through Eco→Low→Med→High→Turbo. 
Side lights (White light mode): with the light turned on, single click the electronic switch to cycle through Single-sided (Low)→Single-sided (High)→Dual-sided (Low)→Dual-sided (High).
Side lights (Red/blue light mode): with the light turned on, single click the electronic switch to cycle through Red constant-on→Red flash→Blue flash→Red & blue flash→Red SOS.

Strobe

With the light turned off, press and hold the side switch for 0.5 seconds to enter Instant Strobe.

With the light turned on, press and hold the side switch for 0.5 seconds to enter Strobe. Press and hold again to exit Strobe or fully press the side switch to turn the light off.

Lock/unlock
Lock: 
With the light turned off, double click the electronic switch within 0.5 seconds to lock the light. The flashlight will blink twice on Eco output, indicating the locked status.

Unlock: 
In locked status, double click the electronic switch within 0.5 seconds, and the flashlight will activate on the mode that the toggle switch is set to, indicating the light is unlocked.
*In locked status, clicking or pressing the electronic switch will activate 2 blinks on Eco output to indicate locked status

Intelligent Memory Circuit
The flashlight memorizes the previously used output level, excluding the Strobe mode, the Red/blue light mode (Side lights), and the White light mode (Side lights).
When turned on again, the previously used output will be recalled. 
*The flashlight will activate on Med output if it was previously turned off on Turbo or High output.
*The flashlight will activate on Red constant-on output if it was previously turned off on Red/blue light mode (Side lights) and activate on Single-sided (Low) if it was previously turned off on White light mode (Side lights).

Battery Specifications

*16340/18650 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.
*When using two CR123A batteries, the Turbo mode cannot be operated, and the Strobe mode delivers a brightness level of 800 lumens.

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 

1. Turn off the flashlight and open the anti-dust cover to reveal the USB Type-C charging port, then connect the USB Type-C end of the charging cable to the flashlight.
2. The indicator will display red while charging and will turn green when fully charged.
3. Once charging is completed, be sure to unplug the charging cable and close the anti-dust cover.

Note: 

1. The normal charging time of the included Fenix ARB-L18-3400 battery is approximately 3 hours from depletion to fully charged with a 5 V/2 A charging adapter.
2. Recharge a stored flashlight every four months to maintain the optimum performance of the battery.
3. All modes can be turned on except the Strobe mode while charging. However, the brightness levels may vary depending on different charging statuses and battery levels.

Battery Level Indication 
With the light turned off, single click the electronic switch to check the battery status, the indicator will last for 3 seconds. Each time the light is turned on, the indicator will show the current battery level and will last for 3 seconds.  
Green light on: saturated 100% - 85%
Green light flashes: sufficient 85% - 50%
Red light on: poor 50% - 25% 
Red light flashes: critical 25% - 1%
*This feature only works with a Fenix ARB-L18 Series battery.

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 60°C/140°F or above, it will automatically step down a few lumens to reduce the temperature. When the temperature drops below 60°C/140°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 Eco output is reached. When this happens in Eco output, the battery level indicator blinks red to remind users to replace or recharge the battery in a timely manner.
*This feature only works with a Fenix ARB-L18 Series 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.
• Lock the flashlight or remove the battery 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 flashlight and battery contacts improves the flashlight's performance as dirty contacts may cause the lamp to flicker, shine intermittently or even fail to illuminate for the following reasons:
  A: Poor battery level.
  Solution: Recharge or replace the battery.
  B: The contact or contact point of the battery or flashlight is dirty.  
  Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol.

If the above methods don't work, please contact the distributor.

Warning

• Do NOT place this flashlight in the reach of children!
• Do NOT shine the flashlight directly into the eyes of anyone!
• Do NOT place light 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 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.
• Turn off and lock the flashlight or remove the battery to prevent accidental activation when the light is placed in a closed and flammable environment such as pockets and backpacks!
• The light sources of this flashlight are not replaceable; so the whole light will need to be replaced when any one of the light sources reaches the end of its lifespan.

What are the key features of LD35R?
A: Fenix LD35R is a three-light-source multipurpose flashlight. Its key features include:

1. White, red, and blue light sources serve lighting needs for various occasions.
2. Main and side lights; side lights provide single-sided lighting and dual-sided 360° lighting.
3. Magnetic tail for hands-free use.
4. Stainless steel strike bezel inlaid with ceramic breaking tips.

What kind of LEDs are used in LD35R? Does Fenix offer to replace LED? 
A: One COB light strip and one Luminus SST40 Gen2 LED, with a lifespan of 50,000 hours.
Fenix does not provide LED replacement services for the time being, and users are not recommended to replace the LEDs independently, which may affect product performance and cause product damage.

What is the color temperature of LD35R?
A: Main light: 6500K. Side lights: 8000K.

What are the working voltage and the working current of LD35R?
A: The working voltage is 2.9 V - 6.0 V and the maximum working current is 5.8 A.

What is the runtime of the Turbo output?
A: The runtime of the Turbo output is 2 hours 19 minutes. However, the light will accumulate a significant amount of heat used at Turbo output. When the light reaches a certain temperature, the light will automatically step down a few lumens to reduce the temperature. Therefore, this runtime data is measured in total of runtime including output at reduced levels due to temperature or protection mechanism in the design. According to the ANSI/PLATO FL1 standard, this runtime data is from the results produced by Fenix through its laboratory testing under the temperature of 21±3°C. (For additional details, please check the runtime graphic in the user manual).
 

*According to the ANSI/PLATO FL1 standard, the initial reading of runtime is taken at 30 seconds of continuous operation, and the end point of reading is reached when the output value reaches 10% of the initial value.

How to prevent accidental activation of the LD35R?
A: Turn off and lock the flashlight or take out the battery to prevent accidental activation during storage or transportation.

Is LD35R rechargeable? How long is the charging time?
A: Yes, LD35R is rechargeable with an inner waterproof USB Type-C port. While charging, please follow the steps below:

1. Turn off the flashlight and open the anti-dust cover to reveal the USB Type-C charging port, then connect the USB Type-C end of the charging cable to the flashlight.
2. The indicator will display red while charging and will turn green when fully charged.
3. Once charging is completed, be sure to unplug the charging cable and close the anti-dust cover.
   The normal charging time of the included Fenix ARB-L18-3400 battery is approximately 3 hours from depletion to fully charged with a 5 V/2 A charging adapter.

What are the optional accessories for LD35R？
A: The package comes with a lanyard, and a holster. Compatible accessories include: AOT-03 traffic wand, AOT-04 traffic wand, AOT-M traffic wand, AOD-M diffuser tip, etc.

Why does the LD35R downshift to a lower mode after being used for a while and the higher mode cannot be selected?
A: There are two reasons: 

1. Intelligent Overheat Protection
   The flashlight will accumulate a lot of heat when used at high output levels for extended periods. When the light reaches a temperature of 60°C or above, the light will automatically step down a few lumens to reduce the temperature.
2. Low-voltage Warning
   When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until the lowest output level is reached.

Why does the LD35R happen to flicker?
A: The reasons that may cause the light to flicker, shine intermittently or even fail to illuminate:

1. Poor battery level.
   Solution: Recharge or replace the battery.
2. The contact or contact point of the battery or light is dirty.  
   Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol.
   If the above methods don't work, please contact your authorized distributor.

What should I do if the LD35R needs repair?
A: 

1. 15-day replacement: Fenix will replace identical or equal products with documented manufacturing defects within 15 days of purchase.
2. 5-year free repair: Fenix will repair a light free of charge within 5 years (rechargeable battery and other accessories: 1 year) of purchase if problems develop with normal use.
3. Lifetime limited warranty: If repair is required after 5 years from the date of purchase, Fenix will charge for parts. The total repair fee is dictated by the cost of the replaced materials.
4. If you need warranty service, fill out the warranty form at https://www.fenixlighting.com/pages/warranty-repairs to start your repair claim.