Olight I5T EOS flashlight review

Osram P9 LED
300 lm output
910 cd intensity
1 x AA battery

The Olight I5T EOS flashlight was released in 2020. It uses Osram P9 LED, TIR reflector and 1 x AA battery. The powerful emitter in this flashlight provides up to 300 lm output, 910 cd intensity, and a beam distance of 60 m.

Excited to find out if this Olight flashlight is worth it? Keep scrolling!

Table of Contents

  • Olight I5T 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 I5T EOS, then tell us.

Olight I5T EOS / I5TEOS

The I5T EOS is an impressive flashlight that offers both power and reliability. Its robust build and outstanding illumination make it a versatile lighting instrument. TIR lens plays a significant role in shaping the beam pattern of the I5T EOS flashlight. This light has 2 modes of lighting. Without mode memory, each time you turn on the I5T EOS, it will start from the default or first mode in the sequence.

Olight I5T EOS specifications

Rated 3 / 5 based on 1465 user votes.

Flashlights let you navigate in the dark. They help you find supplies and signal for help. They also provide comfort and security in tough times.

Olight I5T EOS / 6

Body, materials, weight, colors

Weight6 g
Length95 mm
Body diameter17.8 mm
Head diameter17.8 mm
Materialaluminium alloy
desert tan

An extremely lightweight handheld flashlight weighs 6 g. A balanced flashlight has even weight. It can be more comfortable to hold for longer and reduce hand fatigue. Aluminium is a lightweight material, which is beneficial for I5T EOS flashlight. The I5T EOS flashlight comes in many colors. The choice of color can serve different purposes and preferences.

Olight I5T EOS / 5

System, LED, lens, reflector

EmitterOsram P9 LED
Color temperature6500 K
Switchmechanical rear

People know Osram LEDs for their high performance, energy efficiency, and reliability. The color temperature choice depends on the light's use and personal taste. The I5T 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. Rear switches are common on tactical flashlights. Law enforcement, military, and self-defense personnel use them.

Olight I5T EOS / 2

Performance, flux, intensity, throw

Flux300 lm
Intensity910 cd
Throw60 m
CD/LM factor3.03

You mainly need a flashlight for basic tasks like finding keys or navigating in dimly lit areas. 300 lm can be enough. It can also be enough for occasional use around the house. 910 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. The candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam.

Olight I5T EOS / 7

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 I5T EOS / 8

Features, battery, protections

Battery1 x AA battery
Battery indicatorno
Charger portno
Thermal regulationno

The I5T EOS flashlight utilizes 1 x AA battery as its power source. The I5T EOS doesn't have charger port. The I5T 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 I5T EOS / 4

Accessories, package contents

Package contentsAA battery

The included battery is picked by the manufacturer. It is picked for the best compatibility and performance with the I5T EOS flashlight. The clip allows you to attach this flashlight to a belt, pocket, backpack, or other items. This enables convenient hands-free carry.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the I5T 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
  • TIR lens
  • tactical switch
  • multiple modes
  • waterproof
  • battery included
  • clip


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


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Olight I5T EOS / I5TEOS

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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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