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Fenix HM23 V2.0 AA-Powered Headlamp

$48.00 $36.95

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Max Lumens:
300

Modes:
5

Battery:
14500 or AA
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SKU: HM23V2BKN/ABarcode: 6942870311197N/A

Product Overview

The Fenix HM23 V2.0 is an ultralight, AA-powered headlamp designed for outdoor enthusiasts and everyday users alike. It offers 300 lumens of light with a range of up to 289 feet (88 meters), making it ideal for hiking, camping, or nighttime tasks. Powered by a single included AA battery, the HM23 V2.0 is highly efficient, and its versatile design allows you to quickly detach the head and use it as a handheld flashlight. Key features include an electronic lock to prevent accidental activation, a magnetic tail, and a clip for hands-free use. With robust construction and a 50,000-hour LED lifespan, this headlamp is built for reliability and long-lasting performance.

Specifications

Max Lumens: 300
Max Beam Distance: 289 feet (88 meters)
Max Runtime: 100 hours
Lighting Modes: Five lighting modes including three brightness levels, red light, and red flash
Bulb Type: Luminus SST20 white LED
Lens Material: Polycarbonate
Color Temperature: 5900-6500K
Size: Length: 2.90” (73.6mm) Width: 1.42” (36mm) Height:1.18” (30mm)
Weight: 3.04 oz. (86.3g) including battery
Battery: One included AA battery; compatible with one 1.5V 14500 rechargeable battery
Included: AA battery, spare O-ring
Warranty: Limited Lifetime Guarantee from Fenix Lighting USA

More Information

  • Utilizes one Luminus SST20 white LED and two 2835 red LEDs; with a life span of 50,000 hours each.
  • Powered by one AA battery and compatible with one 1.5V 14500 rechargeable battery.
  • White and red light sources assist various lighting needs in different outdoor scenarios.
  • Electronic lockout avoids accidental activation.
  • Large side switch for fast and simple operation.
  • Can be used as a headlamp and flashlight.
  • Magnetic tail for hands-free use.
  • Reverse polarity protection to protect from improper battery insertion. 
  • Lamp body is made of aluminum alloy material, lightweight and durable.
  • IP68-rated protection and 2 meters impact resistance.
Fenix HM23 V2.0 AA-Powered Headlamp specs chart

Runtime

Fenix HM23 V2.0 AA-Powered Headlamp runtime chart

Warning

  • Do NOT place this headlamp in the reach of children!
  • Do NOT shine the headlamp 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 headlamp in inappropriate ways such as holding the unit in your mouth, doing so could cause serious personal injury or death if the headlamp or internal battery fails!
  • This headlamp will accumulate a significant amount of heat while operating, resulting in a high temperature of the headlamp shell. Pay close attention to avoid burns.
  • Turn off and lock the headlamp or take out the battery to prevent accidental activation during storage or transportation.
  • The LEDs of this headlamp are not replaceable; so the whole headlamp will need to be replaced when any of the LEDs reaches the end of its lifespan.

On/off

Press and hold the switch for 0.5 seconds to turn on/off the lamp. 

 

Mode switching

With the lamp switched off, press and hold the switch for 0.5 seconds to turn on the lamp and enter the White light mode.

With the lamp switched off, double click the switch within 0.5 seconds to turn on the lamp and enter the Red light mode.

 

Output selection

White light mode: single click the switch to cycle through Low→Med→High. 

Red light mode: single click the switch to cycle through Constant-on→Flash.

 

Lockout Function

Lock: with the lamp switched off, press and hold the switch for 3 seconds, the lamp will blink red 4 times at 2Hz to indicate locked status. 

Unlock: with the lamp locked, press and hold the switch for 3 seconds, the lamp will be activated on the Low output of White light mode after blinking red 4 times at 2Hz to indicate the unlocked status. 

In the locked status, a single click or double click of the switch will activate 4 red blinks to indicate the locked status.


*Note: With the light locked, remove and reinsert the battery, the light will not be unlocked automatically. You must still press and hold the switch for 3 seconds to unlock the light.

 

Intelligent Memory Circuit 

The headlamp automatically memorizes the last selected output of each mode. When turned on again the previously used output of selected mode will be recalled.

 

Battery Specifications  

Type

Dimensions

Nominal voltage

Usability

 

Alkaline Battery 

AA

1.5V

Recommended

√√

Ni-MH Battery

AA

1.2V

Usable

Fenix ARB-L14-U Series

14500

1.5V

Usable

Rechargeable Battery (Li-ion)

14500

3.6V

Banned*

×

 

*It is recommended to use a 1.5V alkaline battery. The headlamp is compatible with either a Fenix ARB-L14-U series rechargeable battery or a Ni-MH battery with a voltage of 2.0V or lower. Using a battery with a voltage exceeding 2V will cause damage to the headlamp.

 

Battery Replacement 

Unscrew the battery cap and insert the battery with the anode side (+) towards the inner side, then screw the battery cap back on.

 

Low-voltage Warning

When the voltage level drops below the preset level, the headlamp is programmed to downshift to a lower brightness level until the lowest output is reached. When this happens in the lowest output, the lamp blinks 3 times every 5 minutes to remind users to replace the battery. 

 

Headband Assembly 

The headband is factory assembled by default.

Adjust the headband by sliding the buckle to the required length.

 

Usage and Maintenance

  • Disassembling the sealed head can cause damage to the lamp and will void the warranty.
  • Fenix recommends using an excellent quality battery. 
  • If the lamp will not be used for an extended period, remove the battery, or the lamp could be damaged by electrolyte leakage.
  • Lock the lamp or take out the battery to prevent accidental activation during storage or transportation. 
  • 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 lamp is locked.
    Solution: Press and hold the switch for 3 seconds to unlock the lamp.
    B: Poor battery level.
    Solution: Replace the battery (Ensure the battery is inserted according to the manufacturer’s specifications).
    C: 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 the distributor.

What kind of LEDs are used in HM23 V2.0? Does Fenix offer to replace LED?

A: Fitted with one Luminus SST20 white light LED and two 2835 red light LEDs; with a lifespan of 50,000 hours each. 

 

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 HM23 V2.0

A: The color temperature is 5900-6500K.

 

What is the operating voltage of HM23 V2.0?

A: The operating voltage is 1.5V.

 

Is HM23 V2.0 rechargeable? How long is the charging time? 

A: The HM23 V2.0 uses one Pairdeer AA battery or ARB-L14-2200U battery, and supports replacement battery power only.

 

How to prevent accidentally activate the HM23 V2.0?

Lock: with the lamp switched off, press and hold the switch for 3 seconds, the lamp will blink red 4 times at 2Hz to indicate locked status. 

Unlock: with the lamp locked, press and hold the switch for 3 seconds, the lamp will be activated on the Low output of White light mode after blinking red 4 times at 2Hz to indicate the unlocked status. 

In the locked status, a single click or double click of the switch will activate 4 red blinks to indicate the locked status.

*Note: With the light locked, remove and re-insert the battery, the light will not be unlocked automatically. You must still press and hold the switch for 3 seconds to unlock the light.

 

Why does the HM23 V2.0 downshift to a lower mode after being used for a while and the higher mode cannot be selected?

A: 

Low-voltage Warning

When the voltage level drops below the preset level, the headlamp is programmed to downshift to a lower brightness level until the lowest output is reached. When this happens in the lowest output, the lamp blinks 3 times every 5 minutes to remind users to replace the battery. 

 

Why does the HM23 V2.0 happen to flicker?

A: The reasons that may cause the lamp to flicker, shine intermittently or even fail to illuminate:

A: Poor battery level.

Solution: Replace the battery.

B: The contact point or contact of the battery or headlamp 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.

 

What kind of battery can be used in HM23 V2.0?

A: It is recommended to use a 1.5V alkaline battery. The headlamp is compatible with either a Fenix ARB-L14-U series rechargeable battery or a Ni-MH battery with a voltage of 2.0V or lower. Using a battery with a voltage exceeding 2V will cause damage to the headlamp.

 

What are the optional accessories for HM23 V2.0?

A: The included headband.

 

What should I do when the HM23 V2.0 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: 1 year) of purchase if problems develop with normal use.
  3. Lifetime maintenance: 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.

Product Videos

Customer Reviews

Based on 3 reviews
67%
(2)
0%
(0)
0%
(0)
33%
(1)
0%
(0)
M
MI hunter
HM23

The older I get, the more I value simple and light weight in my equipment. I have only got to try this on one hunting trip so far, but it has been perfect in limited use.

G
George Kraemer
dims on high

I put the new AA battery Fenix sent me and the light dims down when it is on high. Fenix is sending me a new AA battery and we will see if this works.

K
KRIS GREEN
Great back up headlight!

I purchased this as a backup to my primary Fenix headlight as it operates on a single AA battery you can get anywhere.

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