Fenix HT18 Long Distance Hunting Flashlight

Max Lumens: 1500
Modes: 5
(13 customer reviews)

$168.00 $129.95

The Fenix HT18 hunting flashlight is a hand-held long distance flashlight that can throw a maximum 1500 lumens 3,035ft (925m)—that’s over half of a mile! Extremely small, this flashlight is only 7.2” long and weighs only 7.8 oz (excluding battery), nearly half the size of other flashlights that deliver that type of power. Hunters will appreciate the included red or green filters allowing you to filter the light, preserving your night vision and reducing the chance of spooking prey. The Fenix HT18 will be your new go-to hunting flashlight, and you can’t beat the long distance capabilities. Extend runtimes when using the included 21700 li-ion battery and know its status with the battery level indicator. IP68 rated waterproof and dustproof rounds out the features of this spotlight built for those needing a small, tough flashlight with an incredibly far beam distance.

For commercial orders and large purchases, contact us at (888) 775-9996 x6, or
WARNING. Be aware of counterfeit Fenix merchandise in the U.S. marketplace.

Max Lumens: 1500
Modes: 5


Fenix HT18 Flashlight specs chart

Length: 7.2” (184mm)
Body: 1.0” (26mm)
Head: 2.7” (68mm)

Weight: 7.8 oz (220g) excluding battery

Battery: One (included) 21700 li-ion battery or one (not included) 18650 li-ion battery for use with ALF-18 battery holder

Included: Fenix ARB-L21-5000U USB rechargeable 21700 li-ion battery, USB Type-C charging cable, ALF-18 battery holder, red light filter adapter, green light filter adapter, holster (length adjustable), lanyard, spare O-ring, spare rubber switch boot

Warranty: Limited Lifetime Guarantee from Fenix Lighting USA

  • 1500 lumens maximum output and 925 meters maximum beam distance.
  • One Cree XHP35 HI LED with a lifespan of 50,000 hours.
  • Included a Fenix ARB-L21-5000U USB rechargeable 21700 Li-ion battery.
  • A 18650 rechargeable Li-ion battery (not included) can also be used together with the ALF-18 battery holder (included).
  • Instant power activation with momentary tactical tail switch.
  • Simple output selection with side switch.
  • Digitally regulated circuit for maintaining a stable output.
  • Boot-up battery level indication and low-voltage warning.
  • Reverse polarity protection, to protect from improper battery insertion.
  • Made of durable high-strength and oxidation-resistance aluminum.
  • Premium type HAIII hard-anodized anti-abrasive finish.
  • Included red and green filter adapters.

Tap the tail switch to momentarily activate the light (release and the light will go out), fully press to constantly activate the light, press again to turn off the light.

Output Selection
With the light switched on, single click the side switch to cycle through Low→Med→High→Turbo.

With the light switched on, press and hold the side switch for 0.8 seconds to enter strobe, single click the side switch again to turn back to the previously used general mode.

Intelligent Memory Circuit
The light memorizes the last selected brightness level on general mode (excluding strobe). When turned on again the previously used brightness level will be recalled.

Battery Specifications

Type Dimensions Nominal Voltage Recommended
Rechargeable Li-ion Battery 21700 3.6V Fenix ARB-L21 Series
Rechargeable Li-ion Battery 18650 3.6V  Fenix ARB-L18 Series


  1. The Fenix dedicated ALF-18 battery holder must be used together when using 18650 Li-ion battery.
  2. Do not use CR123A or 16340 battery. Doing so may cause damage to the flashlight or the battery being used.

*18650 /21700 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; but cell damage or short circuiting are potential risks the user assumes.

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.

Battery level indication
When the light is switched on, the battery level indicator inside the side switch will light up to display the battery status, the indicator will stay on for 3 seconds before it goes off.

  • Green light on: saturated 100% – 85%
  • Green light flashes: sufficient 85% – 50%
  • Red light on: poor 50% – 25%
  • Red light flashes: critical 25% – 1%

Note: This only works with Fenix ARB-L21 Series 21700 and Fenix ARB-L18 Series 18650 rechargeable Li-ion battery.

Intelligent Protection
The light will accumulate a lot of heat when used on Turbo output level for extended periods. When the light reaches a temperature of 65°C or above, the light will automatically step down by a few lumens to reduce temperature, until it reaches the output of 800 lumens. When the temperature has been reduced, the output will gradually return to Turbo.

Note: The above data is the test results given by Fenix through its laboratory testing. The true performance may vary according to different working environments.

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 Low output mode, the indicator in the mid of the side switch will flash red to remind you to recharge or replace the battery. To ensure normal use, the flashlight will not turn off automatically and will work till the battery runs out completely.

Note: This only works with Fenix ARB-L21 Series 21700 and Fenix ARB-L18 Series 18650 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 an excellent quality battery.
  • If the light will not be used for an extended period, remove the battery, or the light could be damaged by electrolyte leakage or battery explosion.
  • Li-ion battery needs to be charged even if the battery is not exhausted, charge immediately when the battery is exhausted; it has no memory effect.
  • Unscrew the tail cap half a turn or take out 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 battery contacts improves the lamp’s performance as dirty contacts may cause the lamp to flicker, shine intermittently or even fail to illuminate for the following reasons:A: The battery needs replacing.
    Solution: Replace battery (Ensure battery is inserted according to the manufacturer’s   specifications).B: The threads, PCB board contact or other contacts are 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.


  1. This flashlight is a high-intensity lighting device capable of causing eye damage to the user or others. Avoid shining the flashlight directly into anyone’s eyes.
  2. This flashlight will accumulate a lot of heat when used for extended periods, resulting in high temperature of the flashlight shell. Pay attention to safe use to avoid scalding.

13 reviews for Fenix HT18 Long Distance Hunting Flashlight

  1. Keith N. (verified owner)

    Exceptional product!!

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  2. Byron (verified owner)

    This light will light up the night. Very well made & easy to use.

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  3. Ann K (verified owner)

    It is the brightest hand held light I have ever used.

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  4. Justin Johnson (verified owner)

    Fenix has truly outdone themselves on this one. I’ve only had it for a few days but my initial impression is a solid win. The use of the 21700 battery is what really makes this a great choice for hunting since a lot of time is spent in preparation before the sun comes up and then once it goes down. Having a solid battery choice allows you to forget about the light and focus on the tasks at hand. I also have a Fenix PD36R and the battery is also a 21700 which allows you to forget about having to charge the battery often. The Fenix HT18 is almost a mini Fenix TK47UE in terms of size but don’t let the size fool you because the Fenix HT18 has almost double the candela rating! This is huge for when needing to see way out in front of yourself. The beam throw of this light, for its size, is phenomenal. If you are a hunter, police, military, or even an everyday citizen, like myself, you need this light in your kit. Get one!

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  5. Larry (verified owner)


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  6. Jerry Robbins (verified owner)

    Love this light. The direct beam , and distance it reaches out is just what I needed. I have several Fenix flashlights, and headlights. I think they are the best on the market.

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  7. Kevin K. (verified owner)

    Very bright light. It feels very well built. I am pleased with my purchase.

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  8. Beverly (verified owner)

    The flashlight is awesome!! Super bright and very long distance. Better than expected!!! I would like to buy another.

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  9. Shane young (verified owner)

    Bright and light!

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  10. Bruce Baumel (verified owner)

    There is not a better flashlight product in the market today than a Fenix and Fenix has now added the HT18 Long Distance to the list.

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  11. Anonymous (verified owner)

    Works mostly as advertised but wish it had external charging. Doesn’t really last to long on turbo before ramping down, I get maybe five minutes. Overall good light for short distance on high.

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  12. Michael W. (verified owner)

    Great light!! Super bright!!

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  13. Robert Vanderford (verified owner)

    Got this for a thrower, and I wasn’t disappointed. The beam spot is very well defined and the spill is light, even, and well defined too. The tactical switch on the end of the light is nice and positive and, the mode selector is positive and sounds like the tail light cap on my TK47. I’m satisfied with the purchase. I have many lights from Fenix and they all perform well. I inspect homes, so I use my lights for hours a day. The battery life is surprisingly long, and the chargers I have perform without problem. Well done, Fenix!!

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