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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: 20 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Loving this flashlight so far January 28, 2023
Reviewer: Max  
I've only had it a week and so I haven't been able to use it extensively beyond a quick test, but so far it's looking good.

A note about build quality relating to my TM26. 2 years ago, the copper ring inside the head unit came loose and there is no way to reconnect it permanently. If I replace the batteries, I have to be careful to not move the ring otherwise the connectors don't line up and the flashlight does not work. The flashlight is out of warranty, but a flashlight that costs this much should be protected for life against manufacturing defect; this is not damage caused by misuse. Since the flashlight is discontinued and mine is out of warranty, that means I spent about 300 bucks on a flashlight that only sometimes functions. If it cost 20 bucks, who cares? But on a premium item like this, I expect better. I hope my TM20 is built better.

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  0 of 0 people found the following review helpful:
5 of 5 Micronitrcoretm20scopicmicorscopic December 27, 2022
Reviewer: tomKintomg from SilvMDer spring, MD United States  
The products ive purchased from nitecore are all great! Whats not so great are the manuals. Pthe print is microscopic! Sometimes nitecore puts a summary in the package, but not always.  Each product ive purchased (flashlites) has a different. Switching system.  Heres where a quick referal to the manual would help.  Alas, i just push buttons til i figure it out.  Thanx for the great products.  Try looking into graphene batteries next.     TK 12/27/22.

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  0 of 0 people found the following review helpful:
5 of 5 Incredible product December 25, 2022
Reviewer: Eric Keddie from Fort Smith AR  
Everything I read about and more.  Best flashlight I have ever purchased.  Great experience ordering it and delivery was quick.

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  0 of 0 people found the following review helpful:
4 of 5 Good size great features, beware of heat. December 21, 2022
Reviewer: Anthony Robertson from USA  
For the power this flashlight is a great hand held size. The flat sides help you to maintain a good grip. The brightest “turbo” mode is very bright, only intermittent, but be careful because it gets hot enough to scorch fabric very quickly.

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  0 of 0 people found the following review helpful:
5 of 5 Super bright light December 17, 2022
Reviewer: Goodcat from Wilmer, AL United States  
This is indeed a very bright light and it will get hot. The belt clip is handy and doesn't affect holding the light. For the size and features I think this is a decent value.

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