HIGH MID LOW
LUMENS
240
LUMENS
1000
LUMENS
70
LUMEN
1
1
h15min
28
h
6
h
LOWER
520
h
5
h15min
300
h
20
h
1
h
232m
(Beam Distance)
13500cd
(Peak Beam Intensity)
IPX-8, 2m
(Waterproof AND Submersible)
1.5m
(Impact Resistant)
1×18650
2×CR123
®
User Manual
Features
• Utilizes a CREE XM-L2 U2 LED
• Maximum output of up to 1000 lumens
• Integrated “Precision Digital Optics Technology” provides extreme reflector performance
• Boasts a peak beam intensity of 13,500 cd and a throw distance of up to 232 meters
• High efficiency constant current circuit board provides max runtime of 520 hours
• Mode switch offers access to four brightness levels and three special modes
• Integrated power indicator light displays remaining battery power (Chinese
Patent:ZL201220057767.4)
• Power indicator’s secondary function displays battery voltage (accurate to 0.1V)
• Charging module with a micro USB port charges Li-ion batteries rapidly
• Features intelligent memory effect (except for SOS and location beacon modes)
• High-efficiency regulation circuit provides unwavering output
• Stainless steel clip included
• Toughened ultra-clear mineral glass with anti-reflective coating
• Reverse polarity protection prevents damage from incorrectly inserted batteries
• Constructed from aero grade aluminum alloy with HAIII military grade hard-anodized finish
• Waterproof in accordance to IPX-8 (two meters submersible)
• Impact resistant to 1.5 meters
• Tail stand capability
Dimensions
Length: 5.47” (139mm)
Head Diameter: 1” (25.4mm)
Tail Diameter: 1” (25.4mm)
Weight: 3.10oz (88grams) (without battery)
Thanks for purchasing NITECORE!
The All-Round Flashlight Expert
Accessories
Nitecore 18650 battery (NL188 3200mAh),
USB charging cable, holster, clip, tactical
ring, lanyard, spare switch cover, spare
O-ring, spare USB port cover
Output & Runtime
Operating Instructions
Battery Installation
Insert 1x18650 battery or 2xCR123 batteries as
illustrated.
NOTE: After loading batteries, the blue power
indicator will flash to indicate battery voltage. Please
refer to the “Power Tips” section of this manual for
details.
WARNING
1. Ensure batteries are inserted with the positive (+)
ends pointing to the head. The MH12 will not
operate with incorrectly inserted batteries.
2. Avoid direct eye exposure to the beams.
Momentary illumination
Press the tail cap switch halfway to switch the light
on. Simply release to switch the light off.
Special Modes (Strobe/SOS/Location Beacon)
When the light is on, press and hold the mode switch for over one second to enter strobe
mode; when in strobe mode, press and hold the mode switch for over one second again to
cycle through SOS, location beacon and strobe modes. To exit and revert to the brightness
level last used, simply press the mode switch.
Note: The MH12 has memory effect to ensure direct access to the previously used brightness
level and strobe when it is resumed.
Charging Function
The MH12 is capable of charging one 18650 Li-ion battery with the included USB charging
cable. Press the tail switch, and then connect the USB cable to the MH12's charging port and
a power source (USB chargers, PC or other power terminals) as shown in the adjacent image.
Fully charging one depleted 18650 battery takes approximately 6 hours.
NOTICE
The above data has been
measured in accordance
with the international
flashlight testing standards
ANSI/NEMA FL1, using
1xNitecore 18650 battery
(3.7V, 2600mAh) or
2xNitecore CR123 batteries
(3V, 1700mAh) under
laboratory conditions. The
data may vary in real-world
use due to different battery
use or environmental
conditions.
TYPE
Nominal voltage
Compatible
Primary Lithium battery
CR123 3V
Y (Recommended)
18650 Rechargeable Li-ion battery
18650 3.7V
Y (Recommended)
Rechargeable Li-ion battery
RCR123 3.7V
N
SYSMAX Industry Co., Ltd.
TEL: +86-20-83862000
FAX: +86-20-83882723
Web: www.nitecore.com
Address: Rm1401-03, Glorious Tower, 850 East Dongfeng Road,
Guangzhou, China 510600
MH12
ON/OFF
To switch ON: Press the tail cap switch all the way down until a “click” is heard
To switch OFF: Press the tail cap switch all the way down again until a “click” is heard
Brightness Levels
With the MH12 switched on, press the mode switch repeatedly to cycle through brightness
levels of ultra-low, low, medium and high.
Note: When in high output, the MH12 will reduce output luminance automatically after 3
minutes of use to prevent overheating and extend battery longevity.
Under normal charging conditions, the blue power indicator light will illuminate steadily to
notify users. When charging is complete, the MH12 will terminate the charging process
automatically and the blue power indicator goes out.
Note: 1. The MH12 charges 1x18650 Li-ion battery only.
2. In order to enter charging mode, switch on the MH12 before charging.
Power Tips
1. When the light is on, the power indicator will blink once every two seconds when power
level drops to 50%; the power indicator will blink quickly when power level is low.
2. When the light is off, press tail cap switch with the mode switch being held to activate the
power indicator light to indicate battery voltage (accurate to ±0.1V). For example, when the
battery voltage is at a maximum charge of 4.2V, the power indicator will blink 4 times,
followed by a one second pause and 2 more blinks before entering the previously used
brightness. Different voltages represent the corresponding remaining battery power levels:
Battery Options
4.2V3.5V 3.7V 3.9V
Full powerLow power
6.4V4.8V 5.6V 6.0V
Full powerLow power
1 x 18650 battery
2 x CR123 batteries
Changing Batteries
Batteries should be recharged or replaced when any of the followings occurs: The power
indicators blinks rapidly, output appears to be dim or the flashlight becomes unresponsive.
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 a local
※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.
20150910
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