Nitecore HC35 - L-Shaped Headlamp Manual

Operating Instructions

Battery Installation

Insert the battery(s) as illustrated and screw to tighten the tail cap.

Note: After the battery insertion, the power indicator beneath the switch will flash to indicate the battery voltage. Please refer to the "Power Indication" section of this manual for more details.

Warnings:

1. Ensure the battery(s) is/are inserted with the positive end towards the head. The product will not work if the battery(s) is/are incorrectly inserted.
2. Please use the battery magazine when using 1 x 18650 / 2 x CR123 batteries to avoid battery rattling and to ensure a stable contact.
3. 
   Possible dangerous radiation! Don't look into the light! Maybe dangerous for your eyes.
4. When the product is kept in a backpack or left unused for prolonged time, please remove all batteries to prevent accidental activation or battery leakage.
5. DO NOT submerge the light into any liquid when it is hot. Doing so may cause irreparable damage to the light due to the difference of air pressure inside and outside of the tube.
6. The product contains strong magnetic components. DO NOT put it close to objects that tend to suffer from magnetic interference.

On / Off

On: When the light is off, long press the Power Button for 1 second to turn it on.

Off: When the light is on, long press the Power Button for 1 second to turn it off.

Note: The HC35 has mode memory. When reactivated, the headlamp will automatically access the previous memorized brightness level.

Brightness Levels

When the light is on, short press the Power Button to cycle through "ULTRALOW – LOW – MID – HIGH – TURBO".

Direct Access to ULTRALOW / TURBO

ULTRALOW: When the light is off, short press the Power Button to directly access ULTRALOW.
TURBO: When the light is off, long press the Power Button for over 1 second to directly access TURBO after accessing the memorized brightness level.

(Both direct accesses will not trigger the mode memory.)

Special Modes (STROBE / BEACON / SOS)

• When the light is off, double press the Power Button to access the STROBE Mode.
• When the STROBE Mode is on, short press the Power Button to cycle through the following special modes: BEACON – SOS – STROBE.
• When one of the special modes is on, long press the Power Button for 1 second to exit special modes and turn off the light.

Charging Function

The HC35 is equipped with an intelligent charging system. As illustrated, use the USB cable to connect an external power supply (e.g. a USB adapter, a computer or other USB charging devices) to the USB port located on the head to begin the charging process.

• During the charging process, the charging indicator will flash slowly to inform the user.
• When the battery is fully charged, the HC35 will cease the charging process and the charging indicator will become steadily turned on to inform the user.
• The charging time for a 21700 Li-ion battery (5,000mAh) is approx. 3h 15min. (Charged via the 5V/2A adapter)

Power Indication

When the battery is inserted and the tail cap is tightened without connection to a power supply, the power indicator will flash to show the battery voltage (±0.1V). For example, when the battery voltage is at 4.2V, the power indicator will flash 4 times followed by a 1.5-second pause and 2 more flashes. Different voltages represent the corresponding remaining battery power levels:

Note:

1. When using two CR123/RCR123 in series, the indicator will show the average voltage between the two batteries.
2. If it fails to display the voltage correctly, please press and hold the Power Button for over 1 second with the tail cap loosened to ensure the headlamp is totally power off, and then tighten the tail cap again.

ATR (Advanced Temperature Regulation)

The integrated ATR technology regulates the output of the HC35 according to the working condition and ambient environment to maintain the optimal performance.

Changing Batteries

The batteries should be replaced when the power indicator flashes quickly and continuously and the output appears to be dim or the headlamp becomes unresponsive due to low power.

Maintenance

Every 6 months, threads should be wiped with a clean cloth followed by a thin coating of siliconbased lubricant.

Features

• Utilizes 4 x CREE XP-G3 S3 LEDs for a max output of 2,700 lumens
• Lightweight and rigid CNC machined body for an excellent cooling performance
• Utilizes a bead surface total reflective optic lens for uniform and soft light
• Maximum peak beam intensity of 4,500cd and maximum throw of 134 meters
• Powered by a 21700 high capacity Li-ion battery while compatible with 18650 and CR123 batteries, to provide a runtime up to 1,200 hours
• One switch controls 5 brightness levels and 3 special modes
• Built-in Li-ion battery charging circuit with a Micro-USB port
• NITECORE 21700 rechargeable Li-ion battery (NL2140HP 4,000mAh) included
• STROBE Mode uses randomly changing frequencies for stronger dizzying effects
• The power indicator beneath the switch indicates the remaining battery power
• (Patent No. ZL201220057767.4)
• The power indicator can also display the battery voltage (±0.1V)
• Wide range flood optic system of 100° illumination angle specially designed for outdoor applications
• Incorporated Advanced Temperature Regulation (ATR) module (Patent No. ZL201510534543.6)
• Specially designed lightweight and breathable headband included
• Electronic reverse polarity protection
• Constructed from aero grade aluminum alloy
• HA III military grade hard-anodized finish
• Rating in accordance with IP68 (2 meters submersible)
• Impact resistant to 1 meter
• Magnetic tail cap with stand capability

Specifications

Length: 128.2mm (5.05")

Head Dimensions: 28.85mm×31.77mm (1.14"×1.25")

Tube Diameter: 26mm (1.02")

Tail Diameter: 28.3mm (1.11")

Weight: 138.5g (4.89oz)(Bracket and Headband Included, Battery Not Included)
100g (3.53oz) (Bracket, Headband and Battery Not Included)

Accessories

NITECORE 21700 Rechargeable Li-ion Battery (NL2140HP 4,000mAh), Spare O-ring, Clip, Headband, Bracket, 18650/CR123 Battery Magazine, USB Charging Cable, Lanyard

Battery Options

Technical Data

FL1 STANDARD	TURBO	HIGH	MID	LOW	ULTRALOW	STROBE	BEACON	SOS
	2,700 Lumens	800 Lumens	270 Lumens	40 Lumens	Lumen 1	2,700 Lumens	2,700 Lumens	2,700 Lumens
	*45min	3h	8h 15min	52h	1,200h	─	─	─
	134m	73m	40m	14m	3m	─	─	─
	4,500cd	1,330cd	400cd	52cd	2cd	─	─	─
	1m (Impact Resistance)
	IP68, 2m (Waterproof and Submersible)

Note: The stated data is measured in accordance with the international flashlight testing standards ANSI/NEMA FL1, using 1 x 21700 Li-ion battery (5,000mAh) under laboratory conditions. The data may vary in real world use due to different battery usage or environmental conditions.

*The runtime for TURBO mode is tested without the temperature regulation.

*TURBO Availability: The TURBO level is only accessible when using a 21700/18650 rechargeable Li-ion battery with an output over 8A. It is inaccessible when using CR123/RCR123 batteries.

Battery Installation