Fenix FD41 User Manual

Fenix FD41 Flashlight
Technical Parameters
ANSI/PLATO FL1
General Mode
Strobe
Turbo
High
Med
Low
Output
900
Lumens
350
Lumens
150
Lumens
10
Lumens
900
Lumens
Runtime
1h 40min*
3h 50min*
10h 15min
150h
/
Distance
Spotlight
340m
218m
141m
37m
/
Floodlight
47m
30m
20m
6m
/
Intensity
Spotlight
29,000cd
12,000cd
5,000cd
350cd
/
Floodlight
560cd
230cd
100cd
9cd
/
Impact Resistance
1m
Waterproof
IP68, underwater 2m
Notice: The above-mentioned parameters (lab-tested by using Fenix 3.6V/3500mAh 18650
rechargeable Li-ion battery) may vary between flashlights, batteries and environment.
*Due to the dual overheat protection; the runtime of Turbo is estimated.
 Uses Cree XP-L HI LED with a lifespan of 50,000 hours
 Powered by one 18650 rechargeable Li-ion battery or two CR123A batteries
 146mm Length x 25.4mm Body Diameter x 40mm Head Diameter
 160 grams (excluding battery)
 360°rotary focusing technology
 Digitally regulated output maintains constant brightness
 Reverse polarity protection, to protect from improper battery insertion
 Intelligent overheat protection to avoid high surface temperature
 Tactical tail switch for momentary on and constant activation
 Functional side switch for output selection
 Made of durable aircraft-grade aluminum
 Premium type Ⅲ hard-anodized anti-abrasive finish

Fenix FD41 Specifications

General

Max Output	900 Lumens
Impact Resistance	1 meter
Length	155 mm
Switch Type	Tail switch
Water Resistance	IP68
Diameter	25.4 mm
Material	Aircraft-grade aluminum
LED Type	Cree XP-L
Battery Type	18650 Li-ion
Modes	Turbo, High, Med, Low, Eco, Strobe, SOS

Summary

Technical Parameters

Output Specifications

Details light output in Lumens for various operating modes.

Runtime Details

Specifies operational duration for different light modes.

Beam Distance

Indicates beam throw distance in meters for spotlight and floodlight.

Beam Intensity

Lists beam intensity in candela for spotlight and floodlight.

Impact and Waterproof Ratings

Specifies resistance to physical impact and water ingress.

Key Features Summary

Highlights core functionalities, LED type, and construction details.

Operation Instructions

Power Control

Instructions for momentary and constant activation/deactivation.

Output Mode Selection

Method for cycling through brightness levels.

Strobe Mode Activation

Procedure to activate and deactivate the strobe function.

Focus Adjustment

Guide to adjusting the lens focus for spotlight/floodlight.

Memory and Protection Functions

Details intelligent memory, overheat, and low-voltage downshift.

Battery Information

Battery Compatibility Table

Lists compatible, usable, and banned battery types with specifications.

Battery Replacement Procedure

Step-by-step instructions for inserting batteries correctly.

Usage and Maintenance Guidelines

Recommendations for proper care, cleaning, and long-term storage.

Important Warning