®
The All-Round Flashlight Expert
User Manual
MH20GT
Features
· A lightweight, portable 1x18650 USB rechargeable flashlight
· Utilizes a CREE XP-L HI V3 LED
· High efficiency constant current circuit enables maximum output up to 1000 lumens
· Driven by one 18650 battery for maximum runtime up to 680 hours
· Integrated “Precision Digital Optics Technology” provides extreme reflector performance
· Boasts a peak beam intensity of 33,000 cd and a throw distance of up to 362 meters
· Features advanced temperature regulation (ATR) technology
· Innovative single button 2-stage switch accesses multiple functions and modes
· Integrated power indicator notifies battery voltage (accurate to 0.1V)
· Intelligent charging module with a micro USB port charges Li-ion battery rapidly
· Direct access to ultra-low and turbo output
· Detachable two-way anti-rolling 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 (2 meters submersible)
· Impact resistant to 1.5 meters
· Tail stand capability
Dimensions
Length: 4.37” (111mm)
Head diameter: 1.25” (31.8mm)
Tail diameter: 1” (25.4mm)
Weight: 3.13oz (88.8gram) (without battery)
Brightness Levels
With the MH20GT switched on, press the switch halfway repeatedly to cycle through the following
brightness levels: ultra-low, low, medium, high and turbo.
NOTE: The MH20GT has a memory feature. Upon turning-on, it will resume the brightness level
last used.
Direct Access to Ultra-low/Turbo
With the light switched off, press and hold the switch halfway for over one second to access
ultra-low output (1 lumen).
With the light switched off, press and hold the switch all the way down for over one second to
access turbo output (1000 lumens).
Special Modes (Strobe/Location Beacon/SOS)
With the light switched on, press and hold the switch all the way down for more than one second to
enter strobe mode. When in strobe mode, press the switch halfway repeatedly to cycle through
SOS, Location Beacon and Strobe modes. To exit, simply press the switch all the way down to turn
the light off. The MH20GT does not have memory effect for any of these special modes.
NOTE: When in location beacon or SOS modes, press and hold the switch halfway for over one
second will access strobe mode directly.
Charging Function
The MH20GT is capable of charging a 18650 Li-ion battery with the included USB charging cable.
Connect USB cable to the MH20GT'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.
Output & Runtime
NOTICE:
The stated data has been
measured in accordance
with the international
flashlight testing standards
ANSI/NEMA FL1, using 1
x Nitecore 18650 battery
(3.7V, 3400mAh) or 2 x
Nitecore CR123 batteries
(3V, 1700mAh) under
laboratory conditions. The
data may vary in
real-world use due to
different battery use or
environmental conditions.
Operating Instructions
Battery installation
Insert 1x18650 battery or 2xCR123 batteries as
illustrated.
NOTE: After loading batteries, the blue power
indicator will blink to indicate battery voltage.
Please refer to the “Power Tips” section of this
manual for details.
WARNING:
Ensure batteries are inserted with the positive (+)
ends pointing towards the head. The MH20GT will
not be operational with incorrectly inserted
batteries.
Accessories
USB cable, quality holster, clip, lanyard,
spare USB port cover, spare O-ring
Battery Options
4.2V3.5V 3.7V 3.9V
Low Power Full Power
6.4V4.8V 5.6V 6.0V
Low Power Full Power
18650×1:
CR123×2:
TURBO HIGH MID LOW
LUMENS
410
LUMENS
1000
LUMENS
230
LUMENS
50
3
h
1
h
22
h
6
h45min
2
h30min
4
5min
14
h15min
4
h30min
LOWER
LUMEN
1
680
h
340
h
362m
(Beam Distance)
33,000cd
(Peak Beam Intensity)
IPX-8, 2m
(Waterproof AND Submersible)
1.5m
(Impact Resistant)
2×CR123
18650
Thanks for purchasing NITECORE!
Power Tips
After battery installation, the blue power indicator will blink to indicate battery voltage (accurate to
0.1V). For example, when battery voltage is at 4.2V, the blue power indicator will blink 4 times,
followed by a one second pause and another 2 blinks. Different voltages represent the
corresponding remaining battery power levels:
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
20160316
*Warning: Charge 18650 rechargeable Li-ion batteries only. Do not charge
CR123 or RCR123 batteries.
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 (Recommended and
can be recharged)
Rechargeable Li-ion battery *
RCR123
3.7V
On / Off Operation
NOTE: The MH20GT utilizes a 2-stage switch. The light’s numerous functions are selected according to
the depth the switch is pressed.
To switch ON: Press the switch all the way down until a click is heard.
To switch OFF: Press the switch all the way down once again to switch the light off and enter standby
mode.
Standby Mode
When in standby mode, press the switch halfway to activate the blue power indicator to flash once every
three seconds, thus helping users locate the MH20GT in dark conditions. Press the switch halfway again
to turn the power indicator off. When using 1x18650 battery, the MH20GT will operate over 12 months
with the power indicator on, or remain standby for over 24 months with the power indicator off.
NOTE: When the MH20GT is left unused for extended periods, Nitecore recommends loosening the
head to lock out and cut off power, thus saving battery power and preventing accidental activation.
1. Under normal charging conditions, the blue power indicator
light will blink twice every three seconds to notify users. When
charging is complete, the blue power indicator will illuminate
steadily.
2. If a problem is detected during the charging process, the
MH20GT will stop charging and the blue power indicator will
blink rapidly. This is usually caused by faulty or incorrectly
inserted batteries.
ATR Technology
Advanced temperature regulation (ATR) technology allows the MH20GT to dynamically adjust
output performance according to its body temperature. This prevents damage from overheating and
prolongs its working life.
Changing / Charging Battery
Batteries should be replaced or recharged when 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 Details
Our authorized dealers and distributors are responsible for warranty service. Should any problem
covered under warranty occurs, customers can contact their dealers or distributors in regards to
their warranty claims, as long as the product was purchased from an authorized dealer or
distributor. NITECORE’s Warranty is provided only for products purchased from an authorized
source. This applies to all NITECORE products.
Any DOA / defective product can be exchanged for a replacement through a local distributor/dealer
within the 15 days of purchase. After 15 days, all defective / malfunctioning NITECORE® products
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 if the product(s) is/are broken down, reconstructed and/or modified by
unauthorized parties, or damaged by batteries leakage.
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. Sysmax Industry Co., Ltd. reserves the rights to interpret and amend the
content of this document at any time without prior notice.
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