Manual Nitecore MH41 Flashlight

Manual

®

User Manual

Features

• Designed for law enforcement, hunting and tactical applications

• Utilizes a CREE XHP50 LED

• Integrated micro-textured reflector offers wide angle lighting

• Maximum beam intensity up to 61,400cd

• Maximum beam distance up to 495 meters

• High efficiency constant current circuit enables maximum output up to 2,150 lumens

• 5 brightness levels and 3 special modes easily accessible via dual side switch interface

• Broad voltage circuit accepts both rechargeable and non-rechargeable Lithium batteries

• Direct access to Ultralow and Turbo levels

• A power indicator built into the side switch indicates remaining battery power (Chinese

patent: ZL201220057767.4)

• Intelligent memory function for brightness levels and Strobe mode

• Intelligent Li-ion battery charging circuit with automatic detection capability

• Charging port cover protects the port from dust and water ingression

• Spring-loaded impact absorption mechanism with reverse polarity protection (Chinese

patent:201220677948.7)

• Stainless steel titanium-plated clip

• Toughened ultra-clear mineral glass with anti-reflective coating

• Constructed from aerospace grade aluminum alloy

• HAIII military grade hard-anodized

• Waterproof in accordance with IPX-8 (submersible to two meters)

• Impact resistant to 1.5 meters

• Tail stand capability

Dimensions

Length: 9.84” (250mm)

Head diameter: 2.36” (60mm)

Tail diameter: 1” (25.4mm)

Weight: 11.32oz (321g) (without battery)

Thanks for purchasing NITECORE!

SYSMAX Industry Co., Ltd.

TEL: +86-20-83862000

E-mail: [email protected]

FAX: +86-20-83882723

Web: www.nitecore.com

Address： Rm1401-03, Glorious Tower, 850 East Dongfeng Road,

Guangzhou, China 510600

Battery Options

The All-Round Flashlight Expert

Operating Instructions

Battery Installation

Install two 18650 batteries or four CR123 batteries as

illustrated.

Warning

1. Install batteries with the positive ends (+) pointing

towards the flashlight head. Otherwise the

flashlight will not work;

2. Do not mix rechargeable batteries with primary

batteries;

3. Do not mix batteries of different types or brands;

4. Do not mix batteries of different power levels.

Strobe mode last used.

Direct Access to Turbo (2150 lumens)

With the MH41 turned on, press and hold the Step-up switch for one second to enter turbo

directly;

With the MH41 turned off, press and hold the Step-up switch , and press the tailcap switch

all the way down to enter turbo directly.

Direct Access to Ultralow (1 lumen)

With the MH41 turned on, press and hold the Step-down switch for one second to enter

Ultralow directly;

With the MH41 turned off, press and hold the Step-down switch , and press the tailcap

switch all the way down to enter Ultralow directly.

Special Modes

With the MH41 turned on, press the side switches simultaneously to enter Strobe mode.

In Strobe, press the Step-up switch to switch from strobe, location beacon to SOS (no

cycling back). Press the Step-down switch to return to the previous mode.

To exit special modes, press both Step-up and Step-down switches again. The MH41

will revert to the brightness level last used.

ATR Technology

Advanced temperature regulation (ATR) technology allows MH41 to dynamically adjust output

performance based on its internal temperature. This prevents damage from overheating and

prolongs its working life.

Charging

The MH41 features intelligent charging capability. Turn the MH41 on, lift the charging port

cover, and connect the flashlight charging port to an external power source with the charging

cord. The normal charging time for two 18650 batteries is 5 hours.

Accessories

Two Nitecore 18650 rechargeable Li-ion batteries

(NL183), clip, tactical ring, lanyard, charger,

quality holster, spare tailcap switch cover, and

spare O-ring

NOTICE

Stated data has been

measured according to the

international flashlight testing

standards ANSI/NEMA FL1

using 2 x Nitecore 18650

Li-ion batteries (3.7V,

3400mAh) or 4 x Nitecore

CR123 (3V 1700mAh)

batteries under laboratory

conditions. The data may vary

due to individual usage habits

and environmental conditions.

1. Under normal charging conditions, the blue

indicator in the side switches will blink once

every 1.5 seconds. When charging is complete,

the blue indicator will illuminate steadily.

2. If a problem is detected during the charging

process, the MH41 will stop charging and the

blue indicator will blink rapidly. This is usually

caused by damaged or incorrectly inserted

batteries.

Note: DO NOT charge batteries of different types or brands together.

Power Tips

With the MH41 turned off, press all three switches (both side switches and the tailcap

switch to activate the blue power indicator that blinks to indicate battery voltage (accurate to

±0.1V). For example, when battery voltage is at 4.2V, the red power indicator will blink 4

times, followed by a 1.5 second pause and another 2 blinks. Different voltages represent the

corresponding remaining battery power levels.

Changing / Charging Battery

When batteries are close to depletion, the brightness level will be locked at ultralow to protect

batteries. Please change batteries at this time.

Maintenance

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

silicon-based lubricant.

Warranty Service

All NITECORE® products are warranted for quality. Any defective / malfunctioning

NITECORE® product can be repaired free of charge for a period of 60 months (5 years) from

the date of purchase. Beyond 60 months (5 years), a limited warranty applies, covering the

cost of labor and maintenance, but not the cost of accessories or replacement parts.

The warranty is nullified in all of the following situations:

1. The product(s) is/are broken down, reconstructed and/or modified by unauthorized

parties.

2. The product(s) is/are damaged through improper use.

3. The product(s) is/are damaged by leakage of batteries.

For the latest information on NITECORE® products and services, please contact alocal

NITECORE® distributor or send an email to [email protected]

※All images, text and statements specified herein this user manual are for reference purpose

only. Should any discrepancy occurs between this manual and information specified on

www.nitecore.com, information on our official website shall prevail. Sysmax Industry Co., Ltd.

reserves the rights to interpret and amend the content of this document at any time without

prior notice.

Momentary Illumination

Press and hold the tailcap switch partway down to momentarily turn the MH41 on. Release

the tailcap switch to turn the flashlight off.

On/Off Operation

To turn the MH41 on, press the tailcap switch all the way down until a “click” is heard;

To turn the MH41 off, press the tailcap switch all the way down again until a “click” is heard.

Brightness Levels

With the MH41 turned on, press the Step-up switch repeatedly to switch from Ultralow,

Low, Medium, High, and ends at Turbo. Press the Step-down switch repeatedly to switch

to a lower level until Ultralow.

Note: The MH41 has memory function. Upon turning-on, it will resume the brightness level or

*Warning: Charge 18650 rechargeable Li-ion batteries only. Do not attempt to charge

non-rechargeable batteries, CR123 or RCR123 batteries.

Brightness & Runtime

TYPE

Nominal voltage

Compatible

Primary Lithium battery *

CR123 3V

Yes (Compatible but can

NOT be recharged)

Yes (Compatible but can

NOT be recharged)

18650 Rechargeable Li-ion battery

18650 3.7V

Yes (Compatible and can

be recharged)

Rechargeable Li-ion battery *

RCR123

3.7V

20151120

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NITECORE Flashlights

MH41

TURBO HIGH MID LOW

LUMENS

1230

LUMENS

2150

LUMENS

580

LUMENS

90

30

min

1

h45min

2

h30min

400

h

5

h45min

4

h15min

1

h

32

h15min

18

h15min

LOWER

LUMEN

1

850

h

495m

(Beam Distance)

61,400cd

(Peak Beam Intensity)

IPX-8, 2m

(Waterproof AND Submersible)

1.5m

(Impact Resistant)

4×CR123

2×18650

4.2V3.5V 3.7V 3.9V

Low Power Full Power

3.2V2.4V 2.8V 3.0V

Low Power Full Power

18650×2:

CR123×4:

Rating

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