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NITECORE TM20K 20,000 Lumen Rechargeable Flashlight
NITECORE TM20K 20,000 Lumen Rechargeable Flashlight

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Price: $299.95

Availability: Usually Ships in 24 Hours
Product Code: FL-NITE-TM20K

Charging Adapter:
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  • Max output of 20,000 Lumens
  • Built-in 9,600mAh rechargeable battery
  • USB-C Quick Charging
  • CNC Machined Unibody Design
  • Strobe, Spotlight, and Floodlight modes
  • Lockable to prevent accidental usage

Included in the Box

  • Nitecore TM20K
  • USB-C Charging Cable
  • Holster
  • Lanyard

20000 Lumen High Lumen Flashlight

The NITECORE TM20K is the brightest of the Tiny Monster series, yet still remains a compact handheld size thanks to new technology and improved design. This high performance flashlight is a true factotum of illumination with 19 LEDs for a powerful 20,000 lumen max that is astonishing output and cut through 317 yards of the darkness. The TM20K can be used for anything from outdoor activities, industrial uses, self-preservation through active threat mitigation, search and rescue.

9600mAh Built-in Rechargeable Battery

The TM20K has a rechargeable 9600mAh Li-ion battery built-in. The TM20K is USB-C rechargeable, and comes with a charging cable included. It is even capable of quick charge (QC) technology to speed up the charging process. When the light is connected to a QC power source, the battery status indicator will blink rapidly and the light will be fully charged in 4.5 hours. Finally, the TM20K comes standard with all of the advanced features you expect on NITECORE flashlights such as IP68 rated waterproof, advanced thermal regulation, mode memory, and lockout mode.

One-Handed Operation

The TM20K features a dual switch design for quick and easy manipulation. The toggle switch can lock the TM20K for transport or carry, set it to daily mode for constant illumination, or tactical mode for momentary illumination. The large dual paddle switch provides instant turbo on one side and instant strobe on the other. The mode switch is used to cycle through brightness settings while the light is on including the dedicated floodlight mode, or spotlight mode. The perfect light for any situation.


Maximum Brightness20000 lumen
Peak Beam Distance317 yards
Peak Beam Intensity22200 cd
IP RatingIP68
Impact Resistance1 m


Turbo20000 Lumens- -
High3,100 Lumens45min
Mid1,900 Lumens1hr 45min
Low1,050 Lumens4hrs 15min
Ultralow320 Lumens13hrs
Spotlight1,200 Lumens3hrs 30min
Floodlight1,800 Lumens2hrs
Strobe20,000 Lumens- -
Nitecore TM20K
TM20K Lock Tutorial
Average Rating: Average Rating: 4.5 of 5 4.5 of 5 Total Reviews: 12 Write a review »

  0 of 0 people found the following review helpful:
4 of 5 Fantastic light with very minor issues September 18, 2022
Reviewer: Anonymous Person  
Excellente review and instruction video on note nitecorestore.com  Good sense of humour as well which made it a lot of fun to watch.
Very powerful light with excellent batteries.  With 9600mAh, very decent duration for the amount of lumens you get.
The handle fits in my hand however beware if you have small hands; I wear 7.5 gloves and I find this handle a bit big.
The hole for the lanyard is poorly positioned in my opinion; I would have preferred it below the metal button as opposed to top left.
Removable batteries would be a plus specially. Airline companies have varying policies however having that option would be a plus.
Personally, I would like a faster way to switch between strobe and turbo.
Overall, fantastic light with very little room for improvements. If you have small hands, I think the TM 10k or TM 9,8k would be better choice.
I am very please with the quality of this product and I am looking forward to many years of use.

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  0 of 0 people found the following review helpful:
5 of 5 Tmk20 September 11, 2022
Reviewer: Christian Willoughby from Hillsdale , MI United States  
I bought this flashlight to carry in my edc bag. Pulled it out the other night to take the dog for a walk. Saw something up on the road and hit the turbo to check it out and it light up the whole neighborhood. Great light.

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  2 of 2 people found the following review helpful:
5 of 5 TM20K August 13, 2022
Reviewer: Tomtk Kingtkk from Silver spring, MD United States  
Great lite. Powerful, compact, tactical and/or every day use. The switches/buttons (4 or5) may take a bit of time to learn their uses. This lite cannot be beat in its overall functioning.  Tk

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  0 of 0 people found the following review helpful:
5 of 5 TM20K August 6, 2022
Reviewer: DOMINGO ESTRADA from Buena Park, CA United States  
Excellent product very well manufactured is a tactical flashlight with very good lighting and more with the turbo system with 20,000 lumens Recommended

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  0 of 0 people found the following review helpful:
4 of 5 TM20K July 17, 2022
Reviewer: Pablo from Vail  
I have bought many nitecore products, everyone has a particularly about their functioning, this one is not the exception, it’s kind of understandable because of the great heat the product generates, but I’m sure it can be done with a much friendlier interface. It’s the most complicated one I’ve tried.

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