Lumintop SD90 flashlight review

Luminus SBT90.2 LED
7500 lm output
730000 cd intensity
4 x 18650 Li-Ion batteries

The Lumintop SD90 flashlight was released in 2021. It uses Luminus SBT90.2 LED, SMO reflector and 4 x 18650 Li-Ion batteries. The powerful emitter in this flashlight provides up to 7500 lm output, 730000 cd intensity, and a beam distance of 1709 m.

Wondering if this flashlight is a hit? Stay tuned!

Table of Contents

  • Lumintop SD90 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.

Lumintop SD90 / SD90

The flashlight is a must-have tool for outdoor activities, it offers guidance and safety. The memory function is a nice feature, the light will remember the last used mode. It has a strobe function, which is one of the most effective self defense tools available. This Lumintop USB rechargeable flashlight comes with versatile charging options.

Lumintop SD90 specifications

Rated 3 / 5 based on 1240 user votes.

This flashlight can fit in pockets, backpacks, or glove compartments.

Lumintop SD90 / 1

Body, materials, weight, colors

Weight859 g
Length248.7 mm
Body diameter52 mm
Head diameter90 mm
Materialaluminium alloy with HAIII hard-anodized finish

This 859 g flashlight is quite heavy for a handheld flashlight. The length of a flashlight can affect how it feels in your hand and how you can grip it. The aluminium body of the SD90 has a reputation for being durable and strong. The HAIII coating resists corrosion well. The SD90 flashlight comes in a stylish black color.

Lumintop SD90 / 3

System, LED, lens, reflector

EmitterLuminus SBT90.2 LED
Color temperature5700 K
Lenstoughtened AR coated glass
Switchelectronic side

Luminus is a US-based LED manufacturer. In the lighting industry, it has gained recognition as reputable. Color temperature is used to quantify the color appearance of light sources. The SD90 has a smooth reflector. It gives you a better hotspot, and it throws better. The AR coating reduces the loss of light due to reflections, allowing more light to pass through the lens. The flashlight has electronic switches.

Lumintop SD90 / 2

Performance, flux, intensity, throw

Flux7500 lm
Intensity730000 cd
Throw1709 m
CD/LM factor97.33

The SD90 flashlight has 7500 lm. It will provide an exceptionally bright and powerful beam of light. 730000 cd represents an extraordinarily high level of brightness. The throw is the distance in meters at which the flashlight produces a light intensity of 0.25 lux. The cd/lm factor is the candela-to-lumen ratio. It shows how concentrated a light source's output is.

Software, user interface, modes

Mode memoryyes
Ramping modeyes

The Anduril firmware is an open-source firmware developed for flashlights. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. The SD90's ramping mode is easy to use. It lets you smoothly change the output over its whole range. Designers created the strobe function to produce a disorienting or attention-grabbing effect. The SD90's SOS mode produces a specific sequence of long and short flashes.

Features, battery, protections

Battery4 x 18650 Li-Ion batteries
Battery indicatoryes
Charger portUSB Type-C
Thermal regulationyes
Impact resistance1 m
Specialspowerbank function

The Lumintop SD90 flashlight is powered by 4 x 18650 Li-Ion batteries. The battery indicator prevents surprise power failures. USB rechargeable flashlights are more popular now. The flashlight detects when the battery's voltage has dropped to a certain level. The built-in thermal control adjusts brightness output to prevent overheating. The "6" in the IP68 rating shows the level of protection. The "8" in the IP68 rating means the highest level of protection.

The SD90 flashlight proudly boasts an exceptional impact resistance rating of 1 m. The SD90 flashlight can serve as a powerbank to recharge a device, like a mobile phone.

Accessories, package contents

Package contents2 x spare o-rings
USB Type-C cable

The lanyard of the SD90 protects the flashlight from accidental damage. Replacing worn or damaged O-rings helps a lot.

Official sitehttps://lumintop.com/

Conclusion, pros and cons

This Lumintop 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.


  • aluminium body
  • AR coated lens
  • side switch
  • strong flux
  • extremely bright
  • Anduril firmware
  • mode memory
  • ramping mode
  • tactical strobe
  • SOS/beacon function
  • battery indicator
  • USB charger
  • low-voltage protection
  • thermal regulation
  • dust protected
  • waterproof


  • no auxiliary LEDs
  • non-magnetic


Lumintop SD90 / SD90 photo 1.
Lumintop SD90 / SD90 photo 2.
Lumintop SD90 / SD90 photo 3.
Lumintop SD90 / SD90 photo 4.
Lumintop SD90 / SD90


According to our statistics, the Lumintop SD90 flashlight was most often compared on our site with the following flashlights.

If there’s information about the Lumintop SD90 that you would like to see on this site, then write to us.

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.