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 enter Spotlight mode, and double click the switch to enter Floodlight mode.
• With the lamp switched on, press and hold the switch for 1.2 seconds to enter the other mode.

Output Selection

In Spotlight mode, single click the switch to cycle through Low→Med→High→Turbo.

In Floodlight mode, single click the switch to cycle through Read→Low→Med→High.

Lock/Unlock 

Lock: when the lamp is switched off, press and hold the switch for 3 seconds, the lamp will blink 4 times on Read mode to indicate locked status.

Unlock: when the lamp is locked, press and hold the switch for 3 seconds, the lamp will be activated with  4 one-second Read mode blinks and activated on Read mode.

In locked status, clicking the switch will activate 4 one-second blinks on Read mode to indicate locked status.

Intelligent Memory Circuit 

The headlamp memorizes the last selected output of Spotlight mode. When turned on again the previously used output of Spotlight mode will be recalled. Each time the Floodlight mode is entered it starts with the lowest level.

* If turning off the lamp in the Turbo of the Spotlight mode, When turned on again the High output level of Spotlight mode will always be recalled.

Battery Specifications 

Warning: *21700 Li-ion batteries are powerful cells designed for commercial applications and must be treated with caution and handled with care. Only use 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 cap to insert the battery with the anode side (+) towards the inside, then screw the cap back on.

Charging 

1. Uncover the anti-dust cap and plug the USB Type-C side of the charging cable into the charging port of the lamp. 
2. The normal charging time of the included Fenix ARB-L21-5000 V2.0 is about 4 hours (5V/2A) with the lamp being switched off.  
3. The indicator will display red while charging and turn green when fully charged. 

* This only works with Fenix ARB-L21-5000 V2.0 battery.

Note:

1. Recharge a stored headlamp every four months to maintain optimal battery performance.
2. When charging, the Low output level of Spotlight mode can be used. The headlamp will not automatically power on after full charging.
3. When charging is complete, replace the anti-dust cap to ensure the waterproof and dustproof ability.

Battery Level Indication 

With the lamp switched off, single click the switch to check the battery status, the indicator will last for 3 seconds. 

Green light on: saturated 100% - 80%

Green light flashes: sufficient 80% - 50%

Red light on: poor 50% - 20% 

Red light flashes: critical 20% - 1%

Note: This only works with Fenix ARB-L21-5000 V2.0 battery.

Intelligent Overheat Protection            

The lamp will accumulate a lot of heat when used at relatively high output levels for extended periods. When the lamp reaches a temperature of 65°C or above, the lamp will automatically step down a few lumens to reduce the temperature. When the temperature drops below 65°C, it will then allow the user to reselection the modes. 

Low-voltage Warning

When the voltage level drops below the preset level, the headlamp is programmed to downshift to a lower brightness level until Low output is reached. When this happens in Low output, the battery level indicator blinks to remind you to timely recharge or replace the battery. 

Note: This only works with Fenix ARB-L21-5000 V2.0 battery.

Headband Assembly 

1. The headband is factory assembled by default.

2. 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 Fenix battery. 
• If the lamp will not be used for an extended period, remove the battery, or the lamp could be damaged by electrolyte leakage.
• Loosen the cap 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 battery needs replacing.
  Solution: Replace the battery (Ensure the battery is inserted according to the manufacturer’s specifications).
  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.

Warning

• Do NOT place this headlamp in the reach of children!
• Do NOT shine the headlamp directly into the eyes of anyone!
• Do NOT shine flammable objects at close range, to avoid burning objects or causing danger due to high temperature!
• Do NOT use the headlamp in inappropriate ways such as biting in the mouth, to avoid personal injury if the headlamp or internal battery fails!
• This headlamp will accumulate a lot of heat while working, resulting in a high temperature of the headlamp shell. Pay attention to safe use to avoid scalding.
• Turn off and lock the headlamp or remove the battery from the headlamp to prevent accidental activation when the headlamp is placed in a closed and flammable environment such as pockets and backpacks!
• The LED of this headlamp is not replaceable; so the whole headlamp should be replaced when the LED reaches the end of its life.

FAQs About Fenix HM71R Headlamp

Q1. What kind of LEDs are used in HM71R? Does Fenix offer to replace LED?

A: A Luminus SFT70 white light LED, a Luminus SST20 CRI90 neutral white LED.

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.

Q2. What is the color temperature of HM71R?

A: The color temperature of white light is around 6000K, the color temperature of neutral white light is around 4000K.

Q3. What is the working voltage of HM71R?

A: 3.7V.

Q4. Is HM71R rechargeable? How long is the charging time? 

A: HM71R is rechargeable. The charging time is about 4 hours. (The indicator on the battery case will display red while charging, and will turn green when fully charged.) 

Note: This only works for Fenix ARB-L21-5000 V2.0 Li-ion battery.

Q5. How to prevent accidental activation of the HM71R?

A: Lock: when the lamp is switched off, press and hold the switch for 3 seconds, the lamp will blink 4 times on Read mode to indicate locked status.

Unlock: when the lamp is locked, press and hold the switch for 3 seconds, the lamp will be activated with 4 one-second Read mode blinks and activated on Read mode.

In locked status, clicking the switch will activate 4 one-second blinks on Read mode to indicate locked status.

Q6. Why does the HM71R downshift to a lower mode after being used for a while and the higher mode cannot be selected?

A: There are two reasons:

1. Intelligent Overheat Protection      

The lamp will accumulate a lot of heat when used at relatively high output levels for extended periods. When the lamp reaches a temperature of 65°C or above, the lamp will automatically step down a few lumens to reduce the temperature. When the temperature drops below 65°C, it will then allow the user for the reselection of the modes.

2. Low-voltage Warning

When the voltage level drops below the preset level, the headlamp is programmed to downshift to a lower brightness level until Low output is reached. When this happens in Low output mode, the battery level indicator blinks to remind you to timely recharge or replace the battery. 

Note: This only works with Fenix ARB-L21-5000 V2.0 battery.

Q7. Is it normal for the HM71R to get hot while being used?           

A:The lamp will accumulate a lot of heat when used at relatively high output levels for extended periods. When the lamp reaches a temperature of 65°C or above, the lamp will automatically step down a few lumens to reduce the temperature.

Q8. Why does the HM71R happen to flicker?

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

A: Low battery.

Solution: Recharge or replace the battery (Ensure battery is inserted according to the manufacturer’s specifications).

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.

Q9. What kind of battery can be used in HM71R?

A: Fenix ARB-L21 series rechargeable Li-ion battery is recommended. Other Li-ion batteries are not recommended. 

Q10. Is the HM71R battery port waterproof?

A. The light is waterproof so long as the battery port cover is in place.

Q11. What should I do if the HM71R 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 (non-detachable light: 2 years, rechargeable battery and other accessories: 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.