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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: 29 Write a review »

  0 of 0 people found the following review helpful:
1 of 5 nothing tactical about it. May 21, 2024
Reviewer: Stefan Machiels from Maastricht, Netherlands  
To start the review well, yes, there is a huge amount of light from this lamp, but that's where it ends.

It's called a tactical lamp but there's nothing tactical about it. The 20K Lumen butt is on the back, which is not convenient. When you are crawling or taking something out of your bag, there is a good chance that you will shine yourself in the eye or it will go on turbo mode when you don't want it to.
Why is this button on the back?

The batteries are NOT simply interchangeable. Which means that you first have to connect your lamp to a power bank or charge it via the socket, even though it contains 21700 batteries.

Very occasionally the LOCK button does not work, so the lamp somehow turns on and I now have holes in my bag.

Is this lamp worth €348, a big no in my opinion.

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  0 of 0 people found the following review helpful:
5 of 5 Great light March 2, 2024
Reviewer: Glen Livernoche from San Diego, CA United States  
Very satisfied! Thanks

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  1 of 2 people found the following review helpful:
3 of 5 Very short range February 21, 2024
Reviewer: Nitecore Fan from Kentucky  
Excellent build quality and amazing power, but keep in mind it's exceptionally short range. It's a pure floodlight, which limits its use outdoors. The phrase "wide as an ocean, deep as a puddle," comes to mind to describe the beam of light it emits. Indoors, you run the risk of blinding yourself if you use the full 20k lumens. Still has some applications, but consider your use case before buying.

Would be very interested in some kind of attachment to focus the beam if that's possible to engineer.

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  0 of 0 people found the following review helpful:
5 of 5 amazing powerful light January 9, 2024
Reviewer: David Sholar from Kansas City, MO United States  
I love this light.  The belt case that comes with is really good and fits any belt.  I work security for my church and this light works well for low light needs and blinding bright for dealing with those that need to be escorted out.  It does get hot for sure on 20K setting, but the huge battery lasts and lasts.  Very comfortable in my hand as well.  I only wish it had replaceable batteries.

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  0 of 0 people found the following review helpful:
5 of 5 July 22, 2023
Reviewer: Adam Draxler from El Cajon, CA United States  

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