Acebeam PT40 SST20 flashlight review

6 x Luminus SST20 LEDs
3000 lm output
2500 cd intensity
1 x 18650 Li-Ion battery

The Acebeam PT40 SST20 flashlight was released in 2020. It uses 6 x Luminus SST20 LEDs, TIR reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 3000 lm output, 2500 cd intensity, and a beam distance of 100 m.

Curious to know if this Acebeam flashlight is top-notch? Stay tuned for the answer!

Table of Contents

  • Acebeam PT40 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 PT40 SST20 / PT40SST20

The PT40 SST20 flashlight offers a versatile lighting solution. The PT40 SST20 has TIR lenses, engineers design them to minimize light scattering and decrease lens artifacts. Without mode memory, this flashlight always starts in the default mode.

Acebeam PT40 SST20 specifications

NamePT40 SST20
Rated 4 / 5 based on 1351 user votes.

The PT40 SST20 flashlight allows you to light dark areas.

Body, materials, weight, colors

Weight95 g
Length126.8 mm
Body diameter24 mm
Head diameter32.8 mm
Materialaluminium alloy with HAIII hard-anodized finish
desert tan

The 95 g flashlight may not provide the same level of brightness or features as larger models. The best flashlight size depends on personal preference. The aluminium body of the PT40 SST20 has excellent thermal conductivity. The HAIII coating is uniform and attractive. The PT40 SST20 offers an impressive assortment of captivating colors: black, desert tan.

Acebeam PT40 SST20 / 1

System, LED, lens, reflector

Emitter6 x Luminus SST20 LEDs
Color temperature4000 K
Switchmechanical side

Luminus has established a positive reputation as a reliable LED manufacturer. Warm, white light is generally more comfortable. This TIR lens offers flexibility. Mechanical switches offer tactile feedback. Users can feel a distinct click or resistance when they press the switch.

Performance, flux, intensity, throw

Flux3000 lm
Intensity2500 cd
Throw100 m
CD/LM factor0.83

The 3000 lm output of PT40 SST20 provides great flexibility. The PT40 SST20 flashlight has 2500 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. Flashlights with a CRI of 95 or higher are usually seen as top-tier.

Software, user interface, modes

Modes1 mode
Mode memoryno
Ramping modeno

Features, battery, protections

Battery1 x 18650 Li-Ion battery
Battery indicatorno
Charger portno
Thermal regulationyes
Impact resistance1.5 m

The PT40 SST20 flashlight's power source is 1 x 18650 Li-Ion battery. The PT40 SST20 doesn't have charger port. The Low Voltage Protection helps save the battery's capacity. The thermal protection feature helps prevent overheating. The IPx6 rating indicates that the flashlight has a protection against water jets. This flashlight has an impressive impact resistance rating of 1.5 m. It is built to endure accidental drops or impacts. This flashlight has a magnetic base, it lets it easily stick to metal surfaces.

Accessories, package contents

Package contentsclip

When you clip the flashlight to a good spot, you can angle or position it.

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
  • body color options
  • warm light
  • TIR lens
  • side switch
  • superior CRI
  • low-voltage protection
  • thermal regulation
  • waterproof
  • magnetic
  • clip


  • low intensity
  • no mode memory
  • no battery indicator
  • no built-in charger
  • no auxiliary LEDs


Acebeam PT40 SST20 / PT40SST20 photo 1.
Acebeam PT40 SST20 / PT40SST20 photo 2.
Acebeam PT40 SST20 / PT40SST20


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Updated: May 10, 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.