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User  Manual

Features

· 

At 2450 lumens the TM15 is world’s smallest and brightest 

rechargeable searchlight

· 

Utilizes 3 x CREE XM-L LEDs

· 

Thermal protection circuit prevents overheating

· 

Compatible with both 18650 Li-ion and CR123 batteries

· 

Intelligent charging circuit with status detection. Recharge easily, safely 

and quickly

· 

Exceptionally long runtimes using 4 × 18650 Li-ion or 8 × CR123 

batteries

· 

Capable of using 1 × 18650 or 2 x CR123 batteries in emergency 

situations

· 

Innovative single button two-stage switch provides a user-friendly 

interface (Patented)

· 

Integrated power indicator light displays remaining battery power 

(Patented)

· 

Power indicator secondary function displays battery voltage (accurate 

to 0.1V)

· 

Coated mineral glass resists scratches

· 

Aluminum reflector ensures a consistent and powerful beam

· 

Stainless steel retaining ring protects the core components from 

damage

· 

Constructed from aircraft grade aluminum alloy

· 

HA III Military grade hard-anodized

· 

IPX-8 standard waterproof (two meters)

Dimensions

Length: 158mm

Head diameter: 60 mm

Tube diameter: 50mm

Weight

447g (without battery)

Accessories

 

Charger, quality holster, lanyard, spare O-ring

Battery Options

Operation instructions

Battery installation

Insert 4 × 18650 Li-ion or 8 × CR123 batteries with the positive (+) end 

pointing toward the flashlight head. In special circumstances, such as 

emergency situations, between one and three 18650 Li-ion or two and six 

CR123 batteries may be used. After loading the batteries, the power 

indicator light will blink to indicate the battery voltage. Please refer to the 

“Power Tips” section of this manual for details.

Thanks for purchasing NITECORE!

Output & Runtime

NOTICE

Stated data has been measured according to the international flashlight testing 

standards ANSI/NEMA FL1 using four quality NITECORE 18650 (3.7V 2600mAh) 

battery or eight SYSMAX CR123 (3V 1550mAh) batteries under laboratory 

conditions. The data may vary due to individual usage habits and environmental 

conditions.

Power Tips

1. When the light is on, the blue power indicator will blink once 

every two seconds when power levels reach 50%.

2. When the light is on, the blue power indicator will flicker 

constantly when power is very low.

3. Each time batteries are inserted, the light is put into lockout Mode 

or half/fully press the switch under normal charging conditions, 
the power indicator light will blink in various patterns to show the 
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 in quick succession, followed by a one 
second pause and two more blinks, indicating a total battery 
voltage of 4.2V.

Thermal protection

 

TM15 is very compact. Extended operation in Turbo mode will cause 
the body temperature to continually rise, thus, making it too hot to 
use. So NITECORE does not recommend using the TM15 in Turbo 
mode for extended periods. TM15 built-in thermal protection circuit 
prevents overheating. For your safety and to protect the flashlight 
from failure, the TM15 will automatically reduce its output to prevent 
overheating once it has reached 60 degrees.

Precaution: 

When the flashlight is hot, do not attempt to cool it by 
submerging it in liquid.

Changing batteries

When the power indicator blinks consistently it means the batteries 
need to be replaced or recharged. Alternatively if the light becomes 
dim or unresponsive to adjustments once again, the batteries need 
to be replaced or recharged.

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. DOA / defective 
products can be exchanged for replacement through a local 
distributor/dealer within the 14 days of purchase. After 14 days, all 
defective / malfunctioning NITECORE® products will be repaired 
free of charge for a period of 18 months from the date of purchase. 
After 18 months, 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 your national NITECORE® distributor or send an 
email to [email protected]

®

ALL-ROUND Flashlight Expert

TM 15

TURBO

HIGH

MID

LOW

LUMENS

1300

LUMENS

2450

LUMENS

570

LUMENS

300

1

h

1

h

10

min

6

h

20

min

3

h

10

min

8

h

20

min

16

h

30

min

3

h

13

h

LOWER

LUMENS

95

52

h

36

h

363m 

(Beam Distance)

33000cd 

(Peak Beam Intensity)

 IPX-8, 2m 

(Waterproof AND Submersible)

1.5m 

(Impact Resistant)

CR123

18650

NITECORE (SYSMAX)

 is a member of PLA

TO, participating in and helping 

to develop the ANSI FL1 standard of measurement. Product testing data 

is in accordance with these internationally recognized scientific 

standards.

Note:

 

The potential risks of over-discharging batteries can include 

leakage and explosion so caution must be exercised when using 

less than 4 x 18650 or 8 x CR123. Ensure you know your batteries’ 

limits and use the TM15’s emergency functionality sparingly. 

Furthermore, maximum output may be reduced when using less 

than the maximum amount of batteries. 

WARNING

1. Insert batteries with the positive (+) end pointing toward the flashlight 

head.

2. Do not mix rechargeable and non-rechargeable batteries.

3. Do not mix batteries of different types/brands.

4. Do not mix batteries of different charge levels.

5. Do not use lithium batteries without a protected circuit board.

6. This product does not support 18650 rechargeable Li-ion batteries 

without a protection circuit board as these batteries are too short for 

the TM15’s battery compartment.

Charging the TM15

1. Connect the charging cable to the flashlight and the A/C power adapter 

to the wall outlet as shown in the adjacent image. Fully charging four 
depleted 18650 batteries takes approximately 7 hours.

2. Under normal charging conditions, the blue indicator light on the on/off 

switch will blink twice every second.

3. If a problem is detected while charging the TM15 will stop charging and 

the blue indicator will blink rapidly. This can be caused by faulty or 
incorrectly inserted batteries.

4. When charging is complete, the blue indicator will remain on. 

Caution:

1. Do not charge batteries of different types or different brands together.
2. Under normal charging conditions, fully or half press the switch the 

power indicator light will blink to indicate the battery voltage. Please 
refer to the “Power Tips” section of this manual for details.

General Operation

NB:

 The TM15 utilizes a 2-stage switch similar to a camera shutter 

button. The light’s numerous functions are selected according to the 
depth the switch is pressed.

Switching ON/OFF

The TM15 has two modes: Daily mode and Turbo mode. 
With the light turned off:

·

Press the switch partway down and hold to enter Momentary Daily 

mode. Release the switch to turn the light off again.

·

Press the switch all the way down and hold to enter into Momentary 

Turbo mode. Release the switch to turn the light off again.

·

Press the switch partway down and release within one second to 

access Constant Output Daily mode. Press switch to turn light off again.

·

Press the switch all the way down and release within one second to 

access Constant Turbo mode. Press switch to turn light off again.

Standby mode

With the light turned on:
Press the switch all the way down and release within one second to enter 
into standby mode. In this mode, the light will consume small amounts of 
power to maintain the settings in the MCU (micro control unit) but appear 
to be turned off. When in standby mode the power indicator light will flash 
once every three seconds to show the location of the light.

Brightness Selection

When turned on in Daily mode, press the switch partway down to select a
brightness level of ultra low, low, medium, high or turbo. Holding the 
switch for more than one second to access turbo mode, and the selected
brightness level will be memorized when the light is turned off.
When turned on in Turbo mode, press the switch partway down to cycle
through the brightness level of turbo and high output level. There's no 
memory function in Turbo mode.

Strobe Function

With the light turned on, press the switch all the way down twice in quick 
succession to access strobe mode. Press once again to exit the strobe 
mode.

Lockout and Unlock functions

With the light turned on: Press the switch all the way down and hold for 
more than one second. The light will turn off and enter into lockout mode. 
Lockout mode consumes almost no battery power and prevents the light 
from accidentally turning on. Holding the switch for more than one second 
to exit the lockout mode.

NB:

 When entering lockout mode, the power indicator will flash to 

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

 *Warning: 

Charge 18650 rechargeable Li-ion batteries only, do not attempt to 

charge non-rechargeable batteries, CR123 or RCR123 batteries.

SIZE

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

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