Fenix HM70R Rechargeable Headlamp Operating Instructions

On/off 

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

Mode Switching 

• With the lamp switched off, single click the switch for 0.5 seconds to enter General mode, and double click the switch to enter Functional mode.
• Press and hold the switch for 1.2 seconds to enter the other mode.

Output Selection 

• In General mode, single click the switch to cycle through Low→Med→High→Turbo.
• In Functional mode, single click the switch to cycle through Red→Med→High→SOS

Lock/Unlock 

• Lock: when the lamp is switched off, press and hold the switch for 3 seconds, the lamp will blink red three times to indicate locked status. In locked status, clicking the switch will activate 3 one-second red blinks to indicate locked status.
• Unlock: when the lamp is locked, press and hold the switch for 3 seconds, the lamp will be activated with 3 one-second red blinks and activated on Red Light mode.

Intelligent Memory Circuit

The headlamp memorizes the last selected output on Spotlight mode, when turned on again the previously used output on Spotlight mode will be recalled. As of Oct 2022 - *If the headlamp is turned off on Turbo level of Spotlight mode, when turned on again, it will be activated on High output of Spotlight mode.

Battery Specifications for the Fenix HM70R Rechargeable Headlamp 

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 in accordance with the polarity marks, then screw the cap back on.

Charging Indication: 

The indicator on the battery case will display red while charging, and will turn to green when fully charged. * This only works with Fenix ARB-L21-5000 battery. 

Note: 

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-L21-5000is about 4 hours with the lamp being switched off.
3. When charging is complete, replace the anti-dust cap to ensure the waterproof and dustproof ability.
4. Recharge a stored headlamp every four months to maintain optimal Li-ion battery performance.
5. When charging, the Med output level of General mode can be used. The headlamp will not automatically power on after full charging.

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% - 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-L21-5000 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 for the reselection of 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 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 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 for the Fenix HM70R Rechargeable Headlamp 

• 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 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 

• The headlamp is a high-intensity lighting device capable of causing eye damage to the user or others. Avoid shining the lamp directly into anyone’s eyes.
• This headlamp will accumulate a lot of heat when used for extended periods, resulting in a high temperature of the headlamp Pay attention to safe use to avoid scalding.
• The LED of this headlamp is not replaceable; so the entire lamp should be replaced when the LED reaches the end of its life.
• All information provided in this manual is subject to change without prior notice.

Q1. What kind of LEDs are used in HM70R? Does Fenix offer to replace LED?

A: A Luminus SST40 white light LED, an XP-G2 HE neutral white LED and two 2835 red light LEDs.

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 HM70R?

A: Around 6000K.

Q3. What is the working voltage of HM70R?

A: Current: 4.3A, Voltage: 3.7V.

Q4. Is HM70R rechargeable? How long is the charging time? 

A: HM70R 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: The charging port features inner waterproofing treatment, can normally work in the event of water immersion.

Q5. How to prevent accidental activation of the HM70R?

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

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

In locked status, clicking the switch will activate 3 one-second red blinks to indicate locked status.

Q6. Why does the HM70R 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 battery.

Q7. Why does the HM70R happen to flicker?

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

A: The battery needs replacing.

Solution: 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.

Q8. What kind of battery can be used in HM70R?

A: Fenix ARB-L21-5000 Li-ion battery is recommended. A 18650 Li-ion battery can be used as well (together with an ALF-18 battery holder).

Other Li-ion batteries are not recommended. As Higher modes fail to light up due to current and voltage limitation, an unmatched battery may cause the light to fail to work normally.

Q9.  Is the HM70R battery port waterproof?

A.  The light is waterproof so long as the battery port cover is completely tightened.

Q10. What should I do if the HM70R 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.