Lumintop SD90 flashlight review

The Lumintop SD90 flashlight 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
• Conclusion, pros and cons
• Photos

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. If you found an error or something lacking in the specifications for the Lumintop SD90, then tell us.

The SD90 flashlight offers a versatile lighting solution. 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

The SD90 flashlight allows you to light dark areas. It helps you find hazards or stop threats by shining light on them.

Body, materials, weight, colors

This 859 g flashlight is quite heavy for a handheld flashlight. The best flashlight size depends on personal preference. It also depends on intended use and the specific features you want. The aluminium body of the SD90 has excellent thermal conductivity. This means it can effectively dissipate heat generated by the flashlight's components. The HAIII coating resists corrosion well. It shields the aluminum from moisture, humidity, and other corrosive elements. The SD90 flashlight comes in a stylish black color.

System, LED, lens, reflector

Luminus is a US-based LED manufacturer. In the lighting industry, it has gained recognition as reputable. Color temperature is a characteristic of light. It is used to quantify the color appearance of light sources. The SD90 has a smooth reflector. The right reflector focuses light well. 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. They have many benefits and extra features compared to mechanical switches.

Performance, flux, intensity, throw

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

The Anduril firmware is an open-source firmware developed for flashlights. The design offers advanced control and customization options. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. It stays in that mode when you turn it on again. The ramping mode has an advantage. It offers precise control over the light amount emitted by the flashlight. Designers created the strobe function to produce a disorienting or attention-grabbing effect. The SOS code starts three short signals. Then, three long signals follow. Finally, there are three short signals again.

Features, battery, protections

The Lumintop SD90 flashlight is powered by 4 x 18650 Li-Ion batteries. The battery indicator prevents surprise power failures. It ensures the flashlight is ready when needed. USB rechargeable flashlights are more popular now. They are popular because they are convenient and sustainable. The flashlight detects when the battery's voltage has dropped to a certain level. Then, it reduces or cuts off the power.

The built-in thermal control adjusts brightness output to prevent overheating. The "6" in the IP68 rating shows the level of protection. It's against solid objects, like dust and foreign particles. The "8" in the IP68 rating means the highest level of protection. It is against water ingress. The SD90 flashlight proudly boasts an exceptional impact resistance rating of 1 m. The powerbank is in the SD90 flashlights. It can be a big help during emergencies or power outages.

Accessories, package contents

The lanyard of the SD90 protects the flashlight from accidental damage. It does this by stopping it from falling or hitting the ground. Replacing worn or damaged O-rings helps a lot. It keeps up the flashlight's durability and performance.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the SD90 flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

Photos

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

by 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.