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Direct Access to Lower/Turbo

 

With the light turned off, press and hold the on/off switch     for more than 
one second to enter lower output of 5 lumens;
With the light turned off, press and hold the mode switch     for more than 
one sencond to enter turbo output of 3600 lumens.

Special Modes (Strobe/Location Beacon/SOS)

With the light turned on, press and hold the mode switch     for more than 
one second to enter strobe mode. To cycle through all three modes of 
Location Beacon / SOS / Strobe, press and hold the mode switch     for 
more than one second again. To exit special modes, simply press the 
on/off switch     .

Direct access to strobe: 
With the light turned off, press the mode switch     twice in quick 
succession to enter strobe mode instantly. To exit, press any switch and 
the light will turn off.

Lockout/Unlock

With the light turned either on or off, press and hold the on/off     and
mode switches     simultaneously for more than one second to enter 
lockout mode. Once in lockout mode, neither switch will be functional. To 
exit lockout mode, press and hold both switches simultaneously for more 
than one second (repeat the step for entering lockout mode). The 
TM16GT will operate in lockout mode for over 1 year.

Note:

 Lockout mode prevents accidental activation of the flashlight and 

reduces battery consumption. 

Power Tips

1. When the light is off, press the mode switch     to activate the blue 
    power indicator. The power indicator light will blink 3 times when power 
    level is above 50%; twice when power level is below 50% or once 
    when batteries are close to depletion (below 10%).
2. Upon 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:

Features

· 

Utilizes 4 CREE XP-L HI V3 LEDs

· 

Maximum output up to 3600 lumens

· 

Features advanced temperature regulation (ATR) technology

· 

Boasts a peak beam intensity of 252,000cd and a throw distance up to 

1003 meters

· 

Dual-switch user interface ensures easy one-handed operation

· 

Features 5 brightness levels and 3 special modes

· 

High efficiency circuit board provides max runtime up to 610 hours

· 

Integrated power indicator light displays remaining battery power 

(Chinese Patent: ZL201220057767.4)

· 

Built

-

in 

power indicator displays battery voltage (accurate to 0.1V)

· 

Direct access to ultra-low or turbo ensures flexibility and convenience

· 

Reverse polarity protection prevents damage from incorrectly inserted 

batteries

· 

Rear tripod receptacle brings extra funtionality

· 

Toughened ultra-clear mineral glass with anti-reflective coating

· 

Constructed from aerograde aluminum alloy

· 

Sturdy HAIII military grade hard-anodized

· 

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

· 

Impact resistant to 1.5 meters

· 

Tail stand capability

Dimensions

Length: 182mm (7.17”)

Head diameter: 89mm (3.5”)

Tube diameter: 53mm (2.09”)

Weight

521g (18.38oz)(without battery)

  

 

Battery Options

 

*Warning:

 Do not use the TM16 with RCR123 or CR123 batteries.

Output & Runtime

NOTICE:

The above data has been measured in accordance with the international 

flashlight testing standards ANSI/NEMA FL1 using 4 x 18650 (3.7V 

3400mAh) batteries under laboratory conditions. The data may vary 

slightly during real-world use due to battery type, individual usage habits 

and environmental factors.

Operating Instructions 

Battery Installation

 

1. Insert batteries with the positive (+) and negative (-) ends 

corresponding to the diagram on the inside of the battery compartment.

2. Tighten the tailcap by aligning the two gold pins on the inside of the 

tailcap with the corresponding holes on the flashlight body, and rotate 
clockwise.

User  Manual

Thanks for purchasing NITECORE!

®

The All-Round Flashlight Expert

TURBO

HIGH

MID

LOW

LUMENS

1500

LUMENS

3600

LUMENS

500

LUMENS

210

1

h

3

h

15

min

LOWER

LUMENS

5

610

h

21h

7

h15min

1,003m 

(Beam Distance)

252,000cd 

(Peak Beam Intensity)

 IPX-8, 2m 

(Waterproof AND Submersible)

1.5m 

(Impact Resistant)

TM16GT

Accessories

 

Lanyard, spare O-ring

Type

Nominal voltage

Compatible

Primary Lithium battery 

CR123

3V

NO

18650 Rechargeable Li-ion battery

18650

3.7V

Yes (Recommended)

Rechargeable Li-ion battery

RCR123

3.7V

NO

NOTE: 

Upon battery installation, the power indicator light will blink to 

indicate the battery voltage. Please refer to the “Power Tips” section of 
this manual for details.

WARNING:

1. Do not mix batteries of different types/brands.
2. When the TM16GT is stored in a backpack or left unused for extended 

periods, Nitecore recommends that batteries are removed to cut off the 
power entirely, thus preventing battery drain or accidental activation of 
the flashlight.

On/Off Operation 

To turn on: press the on/off switch     to turn the light on.
To turn off: press the on/off switch     again to turn the light off.

Standby Mode

With the light turned on, press and hold the on/off switch     for more than 
one second to turn off the light and activate location indication. The blue 
power indicator built in the side switches will blink once every three 
seconds to indicate the location of the TM16GT. In this mode, the 
TM16GT will operate for approximately 6 months. With the power 
indicator off in standby mode, the TM16GT can run for over 6 months.

Brightness Levels 

With the light turned on, press the mode switch     to cycle through 
brightness levels of lower, low, medium, high and turbo. The TM16GT 
memorizes the brightness level last used when turned off, and enters the 
memorized brightness level directly upon next activation.

ATR Technology

Advanced temperature regulation (ATR) technology allows the TM16GT to 

dynamically adjust output performance according to its body temperature. 

This prevents damage from overheating and prolongs its working life.

Changing Batteries

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 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 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.

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