Acebeam TK16 CU SST20 flashlight review

3 x Luminus SST20 LEDs
1250 lm output
3570 cd intensity
1 x 16340 Li-Ion battery

The Acebeam TK16 CU SST20 flashlight was released in 2019. It uses 3 x Luminus SST20 LEDs, TIR reflector and 1 x 16340 Li-Ion battery. The powerful emitter in this flashlight provides up to 1250 lm output, 3570 cd intensity, and a beam distance of 119 m.

Want to find out if the Acebeam TK16 CU SST20 is good? Keep reading to know!

Table of Contents

  • Acebeam TK16 CU SST20 specifications
    • Body, materials, weight, colors
    • System, LED, lens, reflector
    • Performance, flux, intensity, throw
    • Software, user interface, modes
    • Features, battery, protections
    • Accessories, package contents
    • Links
  • Conclusion, pros and cons
  • Photos
  • Comparisons

The content of this article reflects our own experiences and viewpoints. We aim to offer insights on a topic, and we hope others find it helpful and motivating. Additionally, we make every effort to provide accurate and comprehensive coverage.

Acebeam TK16 CU SST20 / TK16CUSST20

The TK16 CU SST20 flashlight offers a versatile lighting solution. TIR lens plays a significant role in shaping the beam pattern of the TK16 CU SST20 flashlight. This light has 5 modes of lighting. The TK16 CU SST20 flashlight recalls the last used mode. You can use the strobe function as a self-defense tool.

Acebeam TK16 CU SST20 specifications

NameTK16 CU SST20
Rated 4 / 5 based on 1484 user votes.

Flashlights let you navigate in the dark. They help you find supplies and signal for help.

Acebeam TK16 CU SST20 / 3

Body, materials, weight, colors

Weight37.3 g
Length66.5 mm
Body diameter22 mm
Head diameter23 mm
Materialcopper head, aluminium alloy body with HAIII hard-anodized finish

An extremely lightweight handheld flashlight weighs 37.3 g. Consider the length of the flashlight, it should fit comfortably in your chosen way to carry it. The aluminium body of the TK16 CU SST20 has excellent thermal conductivity. The HAIII coating is often matte or textured. This flashlight comes in a sleek copper color option.

Acebeam TK16 CU SST20 / 1

System, LED, lens, reflector

Emitter3 x Luminus SST20 LEDs
Color temperature4000 K
Switchmechanical rear

Luminus has established a positive reputation as a reliable LED manufacturer. Warm, white light is generally more comfortable. The TK16 CU SST20's TIR lens is made of a single piece of transparent material. Mechanical switches offer tactile feedback. Users can feel a distinct click or resistance when they press the switch. A simple press or click of the rear switch turns the flashlight on or off.

Acebeam TK16 CU SST20 / 2

Performance, flux, intensity, throw

Flux1250 lm
Intensity3570 cd
Throw119 m
CD/LM factor2.86

The 1250 lm output of TK16 CU SST20 provides great flexibility. The TK16 CU SST20 flashlight has 3570 cd, it provides a much brighter and more intense beam. The throw distance is the farthest distance the flashlight can light an object. Candela per lumen (cd/lm) measures a flashlight's beam intensity. If accurate color is a priority for you, choose a flashlight with a CRI of 90 or above. The flashlight has a CRI of 95. It can show colors with exceptional accuracy.

Software, user interface, modes

Modes5 modes
Mode memoryyes
Ramping modeno

A flashlight's modes are different output settings or brightness levels. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. The TK16 CU SST20 flashlight has a strobe function, it produces a rapid, repetitive flashing of light.

Features, battery, protections

Battery1 x 16340 Li-Ion battery
Battery indicatorno
Charger portno
Thermal regulationyes

The TK16 CU SST20 flashlight's power source is 1 x 16340 Li-Ion battery. The TK16 CU SST20 doesn't have charger port. LVP (Low Voltage Protection) is designed to protect the battery. The thermal protection feature helps prevent overheating. The flashlight has an IPx8 rating. It can withstand being submerged in water beyond 1 meter for a prolonged period.

Accessories, package contents

Package contents16340 battery
2 x spare o-rings
spare rubber cover

The included battery is picked to match the power needs of the TK16 CU SST20 flashlight. When you clip the flashlight to a good spot, you can angle or position it. When using spare O-rings, follow the maker's instructions.

Official sitehttps://www.acebeam.com/

Conclusion, pros and cons

This Acebeam flashlight, like any other, has its strengths and weaknesses. Let's take a close look at both sides to understand this flashlight better. I share my thoughts on its standout features and the parts that might need improvement. Keep in mind, these are just my opinions, and you might have a different perspective.


  • lightweight
  • aluminium body
  • warm light
  • TIR lens
  • tactical switch
  • adequate performance
  • superior CRI
  • multiple modes
  • mode memory
  • tactical strobe
  • low-voltage protection
  • thermal regulation
  • waterproof
  • battery included
  • clip


  • low intensity
  • no battery indicator
  • no built-in charger
  • no auxiliary LEDs
  • non-magnetic


Acebeam TK16 CU SST20 / TK16CUSST20 photo 1.
Acebeam TK16 CU SST20 / TK16CUSST20 photo 2.
Acebeam TK16 CU SST20 / TK16CUSST20 photo 3.
Acebeam TK16 CU SST20 / TK16CUSST20 photo 4.
Acebeam TK16 CU SST20 / TK16CUSST20


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Updated: April 23, 2024

David Hagon
I love bushcraft and flashlights. I find joy in mastering wilderness survival skills and exploring the realm of illuminating gadgets. Bushcraft isn't just fun, it's a learning journey. I form a strong bond with nature. It's more than a hobby, it enriches me in practical and spiritual ways.