Olight I3T EOS flashlight review

Philips Luxeon TX LED
180 lm output
900 cd intensity
1 x AAA battery

The Olight I3T EOS flashlight was released in 2018. It uses Philips Luxeon TX LED, TIR reflector and 1 x AAA battery. The powerful emitter in this flashlight provides up to 180 lm output, 900 cd intensity, and a beam distance of 60 m.

Curious if the I3T EOS shines bright? You'll find out soon!

Table of Contents

  • Olight I3T EOS 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 Olight I3T EOS, then tell us.

Olight I3T EOS / I3TEOS

The I3T EOS flashlight is a key tool in many situations. It's used for everyday tasks, outdoor adventures, emergencies, and professional work. TIR lens plays a significant role in shaping the beam pattern of the I3T EOS flashlight. This light has 2 modes of lighting. Without mode memory, each time you turn on the I3T EOS, it will start from the default or first mode in the sequence.

Olight I3T EOS specifications

Rated 3 / 5 based on 1459 user votes.

This Olight flashlight offers portability, versatility, and reliability in providing illumination.

Olight I3T EOS / 6

Body, materials, weight, colors

Weight41 g
Length89 mm
Body diameter15 mm
Head diameter15 mm
Materialaluminium alloy
desert tan

An extremely lightweight handheld flashlight weighs 41 g. The best flashlight size depends on personal preference. It also depends on intended use and the specific features you want. Aluminium is a lightweight material, which is beneficial for I3T EOS flashlight. The I3T EOS offers an impressive assortment of captivating colors: black, copper, desert tan.

Olight I3T EOS / 2

System, LED, lens, reflector

EmitterPhilips Luxeon TX LED
Color temperature5000 K
Switchmechanical rear

Warm, white light is generally more comfortable. It's also less harsh on the eyes than cool, white light. The I3T EOS's TIR lens is made of a single piece of transparent material. This material is typically acrylic or polycarbonate. Mechanical switches often offer tactile feedback. Users can feel a distinct click or resistance when they press the switch. The rear switch of the I3T EOS is rugged and durable. It can withstand harsh conditions and repeated use.

Olight I3T EOS / 4

Performance, flux, intensity, throw

Flux180 lm
Intensity900 cd
Throw60 m
CD/LM factor5

You mainly need a flashlight for basic tasks like finding keys or navigating in dimly lit areas. 180 lm can be enough. It can also be enough for occasional use around the house. 900 cd can make things quite bright. It's enough for many everyday tasks. The throw distance is the farthest distance the flashlight can light an object. Candela per lumen (cd/lm) measures a flashlight's beam intensity. It compares this to its total luminous flux or output.

Olight I3T EOS / 3

Software, user interface, modes

Modes2 modes
Mode memoryno
Ramping modeno

A flashlight's modes are different output settings or brightness levels. They can be chosen to meet different needs and preferences.

Olight I3T EOS / 1

Features, battery, protections

Battery1 x AAA battery
Battery indicatorno
Charger portno
Thermal regulationno

The I3T EOS flashlight's power source is 1 x AAA battery. It provides reliable, long-lasting energy for top performance. The I3T EOS doesn't have charger port. The I3T EOS flashlight lacks built-in LVP. You should use a protected battery to prevent over-discharging. This flashlight doesn't have built-in temperature control. The flashlight has an IPx8 rating. It can withstand being submerged in water beyond 1 meter for a prolonged period. The manufacturer specifies this.

Olight I3T EOS / 5

Accessories, package contents

Package contentsAAA battery

The included battery is picked to match the power needs of the I3T EOS flashlight. This ensures reliable and efficient operation.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the I3T EOS flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

Conclusion, pros and cons

This Olight 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
  • tactical switch
  • multiple modes
  • waterproof
  • battery included


  • moderated performance
  • low intensity
  • no mode memory
  • no battery indicator
  • no built-in charger
  • no LVP
  • no thermal regulation
  • no auxiliary LEDs
  • non-magnetic


Olight I3T EOS / I3TEOS photo 1.
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Olight I3T EOS / I3TEOS

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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.
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