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FEATURES

Focusing LED headlamp

Zoom-able head for spot and flood beam

Cool or neutral white LED version available

IPX4 Water resistant

1000 lumens for 4.3hours

8 Selectable brightness levels from 10% to 80%

4 selectable blinking modes: police blinking, slow blinking, quick 

blinking, and SOS.

Smart IC motherboard provides multiple brightness settings , 

and prevents overheat, over discharge or damages caused by polar 
reversing.

Battery level indicating at 20% capacity.

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Elastic bungee headband capable of length adjustment, providing 

best fit and comfort for user.

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Optional Diffuser and USB cable charger available

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Optional BP2836B, BP4836B and BP6836B for longest runtime each 

8.6 hours, 17.2 hours and 25.8 hours on High.

GENERAL USAGE

Briefly press the rubber switch to turn the HL40II on/off.

The HL40II provides three lighting options:

 

Minimum brightness: 

10% output.

 

Maximum brightness: 

100% output.

 

Custom brightness: 

eight selectable modes ranging from 10% to 

80% output. 

 

Strobe / SOS:

 police strobe, slow strobe, rapid strobe and SOS.

Operating Instruction

 

To turn the HL40II on, briefly press the rubber switch. The default 
setting is minimum brightness (10% output).

 

To access custom brightness mode: with the HL40II turned on (in 
either max or custom mode), hold the switch down for more than 2 
seconds and the HL40II will cycle through 8 levels of output. When 
a desired output is displayed simply release the button to set the 
brightness.

 

The HL40II has 3 hidden strobe modes and 1 SOS mode. To access 
these modes simply hold down the power button for 2 seconds 
with the unit turned off and release. To cycle to the next strobe / 
SOS mode once again hold for 2 seconds and release. To exit strobe 
/ SOS mode simply press the switch once (turns the HL40II off). 
The brightness level of strobe / SOS mode is determined by the 
brightness set in custom mode.

STRETCH THE ROTATION HEAD PART TO ADJUST THE BEAM SIZE AND 
FOCUS SPOT

INSTALL AND CONNECT THE BATTERY HOLDER

Installation:

Put the 18650 battery holder in to the silicon sleeve. as shown in the image above.

Connect the DC plug with DC jack of battery holder, and then clockwise to tighten 
the fixed DC connector as shown in the image above.

INTELLIGENT TEMPERATURE CONTROL INSTRUCTIONS

USER MANUAL

Focusing  

LED Headlamp

HL

40II

ZOOM IN

ZOOM OUT

PHOTOS ARE FOR REFERENCE ONLY, PRODUCTS IN KIND PREVAIL!

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Low battery warning: 

When the battery capacity gets very low 

(approx. 20%), the HL40II will emit 10 successive blinks in 8 seconds. 
This is a reminder that the battery should be recharged or replaced.

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Reverse polarity protection: 

When a battery is inserted incorrectly, 

a special protection circuit will activate and automatically prevent 
operation to ensure the safety of the HL40II and its user.

 

The HL40II is also designed with intelligent over-discharge 

detection. If battery voltage reaches a critical lower limit, the HL40II will 
automatically turn off, at which time the battery should be recharged 
as soon as possible. Over-discharge of 18650 cells can cause irreversible 
damage to the battery and in extreme cases, cause the battery to 
inflate and / or emit a harmful gas. It is for this reason that the HL40II 
is designed to operate only with 18650 batteries that are above the 
lowest acceptable voltage limit.

The headlamp is designed with the Intelligent temperature control 

system. As we know, LED is a component which can make heat and 
is sensitive to the temperature, it will be damaged or its working life 
will be shorten by the overheat temperature, especially the powerful 
and brightness LED. So the Intelligent temperature control system 
works when the headlamp’s designation and structure cannot realize 
the heat-radiation temperature from the high brightness LED lighting. 
The system controls the temperature of the LED lamp wick, obviously, 
the headlamp  gets different Thermal Conductivity with different 
structure, and generally speaking, the surface temperature of the 

headlamp constant between 50°C to 60°C, when the  headlamp  runs 

heat, the Intelligent temperature control function will help to reduce 
the power to cool down the lamp wick, the brightness of the light will 
corresponding fell and get lower. And in comparison outdoor using 
with the indoor using, outdoor area using will get wind to cool it down 
and heat-radiation is better, the LED will crank up the power and the 
lights become brighter, and the process of ascension brightness will 
smooth and slow without flashes.
At the same time, the intelligent temperature control system will lead 
the run time get longer (may be the standard of twice to five times). 
Particularly, the run time will depend on the temperature, running 
speed even the wind strength, so the actually run time will be a little 
different according to the environment of the headlamp  using.

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