Fenix FD65 Focus Flashlight

Rated 5.00 out of 5 based on 2 customer ratings
(2 customer reviews)

The Fenix FD65 Focus Flashlight is a beast of a light in fairly compact form.  Its neutral white LEDs and high-efficient TIR optical lens allow this flashlight to blast 3800 lumens of light one-quarter of a mile when focused to a tighter 10° spotlight For a wider beam, simply twist of the flashlight’s head to transition to a 90° floodlight (for greater close-in visibility). The simple operation of switching through its 5 light levels and 2 strobe modes are done by its highly functional side switches that are built into the compact 6″ long and 2″ diameter body. Waterproof/dustproof design continues the long list of attributes that make this the ultimate tool for search/rescue, security and professional applications.

$220.00 $169.95

5.00 out of 5


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Max Lumens: 3800
Modes: 7

Length: 6.0″ (152.2mm)
Body: 2.0″ (50.5mm)
Head: 2.4″ (61mm)

Weight: 15.2 oz. (431g) excluding batteries

Batteries: Four 18650 rechargeable Li-ion batteries (not included) NOTE: The light will not work with flat-top 18650s nor any of the micro-USB batteries like the Fenix 2600U/3500U.  We recommend any of the other ARB-L18 series from Fenix.

Included: Lanyard, holster, spare O-ring

Warranty: Limited Lifetime Guarantee from Fenix Lighting USA

The parameters (lab-tested by using 4 Fenix ARB-L18-3500 3.6V/3500mAh rechargeable Li-ion batteries) may vary between flashlights, batteries and environments.
MODE Lumens
Impact Resistance
Eco - Spotlight 50 86h 171ft (52m) 680cd
Eco - Floodlight 50 86h 36ft (11m) 30cd
Low - Spotlight 150 40h 50min 279ft (85m) 1800cd
Low - Floodlight 150 40h 50min 62ft (19m) 90cd
Med - Spotlight 400 19h 40min 430ft (131m) 4290cd
Med - Floodlight 400 19h 40min 95ft (29m) 210cd
High - Spotlight 1200 5h 755ft (230m) 13200cd
High - Floodlight 1200 5h 161ft (49m) 600cd
Turbo - Spotlight 3800 3h 1345ft (410m) 42000cd
Turbo - Floodlight 3800 3h 282ft (86m) 1850cd
Strobe 3800
SOS 150
1m IP68 - waterproof underwater to 2m/dust proof
Additional Features
  • Cree XHP35 HI neutral white LED with lifespan of 50,000 hours
  • Powered by four 18650 rechargeable Li-ion batteries (not included)
  • 431 grams (excluding batteries)
  • Low and High separately controlled for powering on
  • Momentary on SOS and Strobe
  • Dual side switches for separate upward and downward output selection
  • High efficient TIR optical focusing lens
  • Fitted with 1/4” threaded interface (Standard tripod socket)
  • Digitally regulated output maintain constant brightness
  • Reverse polarity protection, to protect from improper battery insertion
  • Intelligent overheat protection protects from high surface temperature
  • Made of durable aircraft-grade aluminum
  • Premium type III hard-anodized anti-abrasive finish


With the light off, press and hold the L switch for 0.5 seconds to turn on the Low output.
With the light off, press and hold the H switch for 0.5 seconds to turn on the High output.
With the light on, press and hold any switch for 0.5 seconds to turn off the light.
Note: If the battery level gets too low, the light can only be lit on the output level that the battery level can activate.

Output Selection
With the light on, single click the L switch for brightness decrease, and single click the H switch for brightness increase.

Flash Mode
In any state, press and hold the L switch for 1.2 seconds to enter SOS; press and hold the H switch for 1.2 seconds to enter strobe; click one of the switch once again to turn back to general brightness level.

Spot- and Floodlight Adjustment
Rotate the focusing ring to regulate between spotlight and floodlight. Counterclockwise to gradual spotlight, clockwise to gradual floodlight. (The factory default is floodlight, and it will be a little tight for first focusing ring rotating)

Lockout Function
Lock: with the light unlocked, simultaneously press and hold the two switches for over 2 seconds.Light will blink twice on Low and then switch off toindicate locked status.
Unlock: with the light locked, simultaneously press and hold the two switches for over 2 seconds.The light will be unlocked and activated on last used brightness.

With the light locked, press any switch will activate 2 blinksand then switch off to indicate locked status.

Intelligent Overheat Protection
The light will accumulate a lot of heat when used on Turbo output level for extended periods. When high temperature(≥ 65℃ )is detected or after 3-minute working on Turbo, the light will automatically step down by a few lumens to reduce temperature.

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 mode, the flashlight blinks three times every five minutes to remind you to replace the batteries. To ensure normal use, the flashlight will not turn off automatically and will work till the batteries protection activate.

Note: 1. The light can be lit both with 2 and 4 batteries, insert any group of batteries as the location hole shown, the light works normal. 2. When the battery level gets too low, turning up the brightness will activate the battery protection, thus the light will switch off automatically. Take out the batteries and reload, the light will activate on Low, or replace batteries for normal use.

Battery Replacement
Unscrew the tail cap to insert the battery with the polarity markings correct direction according to the signs on the bottom with the anode side (+) towards the light head, then screw the tail cap back on.

Reviews (2)

2 reviews for Fenix FD65 Focus Flashlight

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  1. Rated 5 out of 5

    Gerard Jeronowitz (verified owner)

    Just arrived today with the 3500mAH battery kit and had a little romp with it around the neighborhood after dark.
    First impressions: very nice light overall. For walking in the dark the eco (50lm) mode and a wide flood pattern light a very nice path. A quick twist of the focus ring and a few presses of the H button and this thing turns in to a lighting juggernaut that easily bests the full output of the high beams on my car.
    I found the narrowest beam pattern is just a few degrees of twist before the hard stop of the focus ring but the widest pattern is at that hard stop, just enough to have to think about it but not enough that you’d notice unless you’re paying attention.
    The middle third of the focus range produces some mild shadowing in the center of the projection pattern as a result the three emitters but, again, nothing you’d probably notice unless you’re looking for it. Another strange side-effect of the triple emitter/reflector/projector setup is that items close up will cast three distinct shadows.
    Overall the operation is really easy for power on/off and brightness selection and the function of entering and exiting the two flash modes is a novel approach. I do wish Fenix would adopt a “beacon” mode where the unit would just flash about once per second at full power, perhaps one would hold down the “L” button for the 1.5s to get in to ‘rescue’ mode then pressing the “H” button would toggle between SOS and beacon mode. Likewise pressing the “H” button for the 1.5s would get to into “tactical flash” and then pressing the “L” button would toggle between several flash patterns.
    One of the factors that led me to this light was the tripod mount to use this as a utility light while working on the car or to illuminate a camp site and that is a nice little touch but in the dark I have a hard time finding the power buttons as they are 180° opposite the mount. I think making the power buttons glow-in-the-dark or putting a very low level light behind them that activates with motion would be a welcome addition; I think I’m going to try putting some phosphor paint in the lettering recesses.

    So: a small, bright, flexible lighting source with hours of runtime even at high outputs. What’s not to love.

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  2. Rated 5 out of 5

    Scott (verified owner)

    I’ve had this light for a while now and I’m really enjoying it. When set to flood, you get a huge, very even circle of light, almost like a theater spot light. Twist it to spot and you get a somewhat tight spot of light that easily illuminates things at a distance. Do note, the ECO mode on this light is 50 lumens so it’s not a firefly mode but I don’t feel it’s needed in a light like this. I have plenty of sub lumen flashlights if I need them.
    The bulk of my lights are cool what as the odd greenish tint of the neutral white never really appealed to me but I have to say that CREE got this one right with the XHP35 HI used in this light. This is easily the nicest tint of neutral LED I’ve seen and I really like it.
    One thing I found with my FD30 that seems to be the same with the FD65 is if you leave the focus ring set to ether extreme when not in use, it’s a bit difficult to rotate the ring again at first use. Because of this, I try to remember to leave the focus ring at a mid point and then it rotates freely every time when you need it.
    Overall, an really great light and a nice addition to my collection.

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