Nitecore TM15 & 4 x 18650 3400mAh batteries (NL189)
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Nitecore TM15 & 4 x 18650 3400mAh batteries (NL189)

by: Nitecore


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They do not call it a monster for nothing, the TM15 is a definite monster when it comes to providing illumination and the unit can light up the darkness with 2450 lumens of blinding light. To get to that level of brightness it utilizes 3 CREE XM-L U2 LEDs and it draws power from a bank of four 18650 Li-ion batteries or eight CR123 batteries. It can keep pushing 2450 lumens for an hour on this power level. It fits easily in anyone’s hand because of its compact dimensions; length 158mm, head diameter 60mm and tube diameter 50mm.


Nitecore TM15 3xXM-L (4x18650, 8xCR123A/RCR) rechargeable flashlight review, by Selfbuilt


Nitecore TM15 Specs

Rechargeable FlashlightYES
LEDBrightness LevelWaterproofSpecifications (Width, Length, Diameter)WeightBattery
3×CREE XM-L U2 5 output levels IPX-8 158mm (Length)60mm(Bezel Diameter)50mm(Body Diameter) 447g 4x18650/8xCR123
ANSI/FSCGeneral ModeFlashing Mode 
  Turbo High Mid Low Lower Strobe SOS
Output (lumens) 2450 1300 570 300 95 / /
Runtime(4x18650) 1h 3h/10min 8h/20min 16h/30min 52h    
Runtime(8xCR123) 1h/10min 3h 6h/20min 13h 36h    
Distance (363 m)              
Intensity (33000 cd)              
Impact Resistant (1.5 m)              


    • At 2450 lumens the TM15 is world's smallest and brightest rechargeable searchlight
    • Utilizes 3 x CREE XM-L U2 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 x 18650 Li-ion or 8 x CR123 batteries
    • Capable of using 1x 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)
    • Length: 158mm (6.22”)
    • Head diameter: 60 mm (2.36”)
    • Tube diameter: 50mm (1.96”)
    • Weight: 447g (15.77oz) (without battery)
    • Charger
    • quality holster
    • lanyard
    • spare O-ring
    • 4 x Nitecore 18650/3400 mAh ( NL-189 )



    Charge 18650 rechargeable Li-ion batteries only, do not attempt to charge non-rechargeable batteries, CR123 or RCR123 batteries.

  • 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.



    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.



    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 LED Flashlight

    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 l 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.



    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.

    Please read the manual carefully before operating the Nitecore TM15. Please used protected 18650 lithium batteries.

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