®
User Manual
Features
• Premium CREE XP-L HI V3 LED
• Maximum output up to 1000 lumens
• High efficiency regulation circuit for a maximum runtime up to 130 hours
• Optimized ultra-precise reflector offers a beam distance up to 803 meters
• Intelligent charging circuit with voltage detection charges safely and rapidly
• Onboard charging port sleeve protects the port from dust and water ingression
• Four easily accessible brightness levels
• User defined mode allows for quick access to the setting last used
• Intelligent memory function stores preferred brightness settings
• Broad voltage circuit accepts both rechargeable and non-rechargeable Lithium
batteries
• Waterproof in accordance with IPX-8 (submersible to two meters)
• Stainless steel bezel ring protects core components from damage
• Toughened ultra-clear mineral glass with anti-reflective coating
• Constructed from aerospace-grade aluminum alloy
• HAIII military grade hard-anodized
• Reverse polarity protection
• Stainless steel titanium-plated clip
• Anti-rolling design
Dimensions
Length: 9.84” (250mm)
Head Diameter: 2.36” (60mm)
Tail Diameter: 1”(25.4mm)
Weight: 10.65oz(302g)(without battery)
Thanks for purchasing NITECORE!
SYSMAX Industry Co., Ltd.
TEL: +86-20-83862000 FAX: +86-20-83882723
Address: Rm1401-03, Glorious Tower, 850 East Dongfeng Road,
Guangzhou, China 510600
Battery Options
The All-Round Flashlight Expert
Operating Instructions
Battery Installation
1. Unscrew the tailcap counter-clockwise.
2. Insert two 18650 batteries or four CR123
batteries with the positive ends pointing
towards the light head.
NOTES:
1. Do not mix rechargeable and
non-rechargeable batteries.
2. Do not mix batteries of different
types/brands.
3. Do not mix batteries of different power levels.
blink twice every second.
2. If a problem is detected during the charging process, the MH40GT will stop
charging and the red indicator will blink rapidly. This is usually caused by damaged
or incorrectly inserted batteries.
3. When charging is complete, the red indicator will illuminate steadily.
Accessories
Two Nitecore 18650 Li-ion batteries(NL183),
tactical ring, lanyard, charger, clip, holster,
spare tailcap switch cover and spare O-ring
*Warning: Charge 18650 rechargeable Li-ion batteries only, do not attempt to
charge non-rechargeable batteries, CR123 or RCR123 batteries.
Brightness & Runtime
TURBO HIGH MID LOW
LUMENS
325
LUMENS
1000
LUMENS
88
LUMENS
13
130
h
27
h
2
h
15
min
4
h
45
min
6
h
45
min
75
h
18
h
1
h
30
min
803m
(Beam Distance)
161,300cd
(Peak Beam Intensity)
IPX-8, 2m
(Waterproof AND Submersible)
1.5m
(Impact Resistant)
4×CR1232×18650
NOTICE
Stated data has been
measured according to the
international flashlight testing
standards ANSI/NEMA FL1
using two quality NITECORE
18650 (3.7V 3400mAh)
batteries or four SYSMAX
CR123 (3V 1700mAh)
batteries under laboratory
conditions. The data may
vary due to individual usage
habits and environmental
conditions.
Cautions:
1. The MH40GT needs to be turned
on in order to enter charging mode.
2. Do not charge batteries of
different types or different brands
together.
Switching ON/OFF
To switch ON: Press the tailcap switch until a “click” is heard.
To switch OFF: Press the tailcap switch again until a “click” is heard.
Mode Switching
The Nitecore MH40GT has two modes: Turbo and User-defined. These modes are
interchangeable by tightening and loosening the flashlight head. Turbo provides 100%
output while User-defined contains five selectable brightness levels and functions.
Turbo Mode
Turbo mode (1000 Lumens) is accessed by tightening the flashlight head. In this
mode, press the tailcap switch partway down to momentarily turn on MH40GT, and
release to turn it off. Momentary illumination can be applied for signaling and tactical
purposes.
Note: in Turbo mode, the fast generated heat can increase flashlight temperature and
consequently affect user experience or even flashlight life. Therefore, MH40GT will
automatically lower its brightness level after 5 minutes in Turbo mode to control
temperature and prolong battery life. You can switch back to Turbo mode if necessary,
but using Turbo for extended period is not recommended.
User-Defined Mode
User-defined mode is accessed by slightly loosening the flashlight head. In this mode,
lightly and rapidly pressing the switch will cycle through brightness and other
functions in the following order: “High-Mid-Low-SOS-Strobe”. The MH40GT will
memorise the desired setting approximately 8 second after it is turned off.
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
※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.
Charging Function
MH40GT is capable of charging two protected 18650 Li-ion batteries. As illustrated,
loosen the metal sleeve (counter-clockwise) and connect the charging port to a power
socket via the included charging cable. Switch the product on to begin charging. The
average charging time for two 3400mAh 18650 rechargeable Li-ion batteries is 5
hours.
1. Under normal charging conditions, the red indicator light near the charging port will
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
20151103
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