Fenix PD25R Reference Manual and SpecificationsUpdated an hour ago

The Fenix PD25R is a rechargeable EDC flashlight. 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 within the reach of children.
Do not shine this flashlight directly into the eyes of anyone.
Do not place this flashlight near flammable objects — high temperatures can cause objects to overheat and become flammable/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 life-threatening harm if the flashlight or internal battery fails.
This flashlight will accumulate a lot of heat while working, resulting in a high temperature of the flashlight shell. Pay attention to safe use to avoid scalding.
Turn off and lock the light, 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 LED of this flashlight is not replaceable; the whole light should be replaced when the LED reaches the end of its lifespan.

Overview

800 lumens maximum output, 250 meters maximum beam distance
Uses a Luminus SST20 LED with a lifespan of 50,000 hours
Powered by a 16340 rechargeable Li-ion battery and compatible with a CR123A Lithium battery
Toughened ultra-clear glass lens with an anti-reflective coating
USB Type-C charging
Battery level indication and low-voltage warning
Instant power activation with a momentary tactical tail switch; simple output selection with a side switch
Anti-roll and anti-slip body design; included two-position body clip
Reverse polarity protection, to protect from improper battery insertion
Made of durable A6061-T6 aluminum with a premium type HAIII hard-anodized anti-abrasive finish
Size: 3.62'' x 0.94'' x 0.94'' / 92 x 24 x 24 mm. Weight: 2.75 oz / 78 g (including battery)

Operating Instructions

On/Off: the tail switch is the tactical switch and the side switch is the functional switch. Tap the tactical switch to momentarily turn on the light; release it and the light will go out. Fully press the tactical switch to constantly turn on the light; press it again to turn off the light.

Mode Switching: when the light is switched on, press and hold the functional switch for 0.5 seconds to enter Strobe; single click again to turn back to General mode.

Output Selection: when the light is switched on, single click the functional switch to cycle through Turbo → Eco → Low → Med → High.

Intelligent Memory Circuit: the light memorizes the last selected output, excluding Strobe. When turned on again, the previously used output of General mode will be recalled.

Battery Specifications

Fenix ARB-L16 Series (16340, 3.6V): Recommended
Non-rechargeable Battery, Lithium (CR123A, 3.0V): Usable (no charging)
Rechargeable Battery, Li-ion (16340, 3.6V/3.7V): Caution

16340 Li-ion batteries are powerful cells designed for commercial applications and must be treated with caution and handled with care. Only using quality batteries with circuit protection will reduce the potential for combustion or explosion; cell damage or short-circuiting are potential risks the user assumes.

Battery Replacement: unscrew the light tail and insert the battery with the anode side (+) towards the light head, then screw the light tail back on.

Charging

Switch off the light and loosen the light head to reveal the USB Type-C charging port. Plug the USB A socket of the charging cable into an electrical outlet, then connect the USB Type-C socket of the charging cable to the light. The indicator will display red while charging and turn green when fully charged. Once charging is completed, be sure to tighten the light head to maintain dustproof and waterproof performance. The normal charging time of the included Fenix ARB-L16-700P is approximately 2 hours from depletion to full charge — recharge a stored light every four months to maintain optimum performance. The Eco output is available while charging (press and hold the functional switch for 0.5 seconds), but the charging time will be prolonged.

Battery Level Indication: each time the light is turned on, the indicator shows the battery level for 3 seconds. Green light on: 100%-85%. Green light flashes: 85%-50%. Red light on: 50%-25%. Red light flashes: 25%-1%. This only works with a Fenix ARB-L16-700P 16340 rechargeable Li-ion battery.

Technical Parameters (ANSI/PLATO FL1)

Turbo: Output 800 lumens*, Runtime 44 minutes, Distance 250 meters, Intensity 15530 candela
High: Output 350 lumens, Runtime 1 hour 30 minutes, Distance 164 meters, Intensity 6750 candela
Med: Output 150 lumens, Runtime 2 hours 50 minutes, Distance 107 meters, Intensity 2860 candela
Low: Output 30 lumens, Runtime 16 hours, Distance 48 meters, Intensity 580 candela
Eco: Output 5 lumens, Runtime 70 hours, Distance 19 meters, Intensity 90 candela
Strobe: Output 800 lumens

Impact Resistance: 1 meter | Submersible: IP68

Note: Specs measured by Fenix using a Fenix ARB-L16-700P rechargeable 16340 Li-ion battery at 21±3°C / 50–80% humidity; real-world performance varies. *Turbo/High outputs are measured in total runtime including output at reduced levels due to temperature or the built-in protection mechanism.

Intelligent Overheat Protection

The light will accumulate a lot of heat when used at relatively high modes for extended periods. When it reaches a temperature of 60°C or above, it will automatically step down a few lumens to reduce the temperature; when the temperature drops below 60°C, it will allow the user to reselect the modes.

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 Eco output mode, the battery level indicator blinks red to remind users to recharge or replace the battery. This only works with a Fenix ARB-L16-700P 16340 rechargeable Li-ion battery.

Usage and Maintenance

Disassembling the sealed head can cause damage to the light and will void the warranty.
Fenix recommends using only a high-quality protected battery.
If the light will not be used for an extended period, remove the battery for proper storage.
Unscrew the tail cap 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.
If the light flickers, shines intermittently, or fails to illuminate, check for a poor battery level (recharge or replace) or dirty battery/flashlight contacts (clean with a cotton swab soaked in rubbing alcohol).
If the above methods don't work, please contact your authorized distributor.

What's Included

Fenix PD25R flashlight, Fenix ARB-L16-700P rechargeable Li-ion battery, USB Type-C charging cable, lanyard, 2x spare O-rings, two-position body clip, user manual, and warranty card.

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