Nitecore EF1 flashlight review

Cree XM-L2 U3 LED
830 lm output
18300 cd intensity
1 x 18650 Li-Ion battery

The Nitecore EF1 flashlight was released in 2017. It uses Cree XM-L2 U3 LED, SMO reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 830 lm output, 18300 cd intensity, and a beam distance of 271 m.

Keen to discover if this Nitecore flashlight lives up to the hype? Keep reading!

Table of Contents

  • Nitecore EF1 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 Nitecore EF1, then tell us.

Nitecore EF1 / EF1

The EF1 flashlight is a key tool in many situations. It's used for everyday tasks, outdoor adventures, emergencies, and professional work. This light has 3 modes of lighting. This flashlight does not have memory function.

Nitecore EF1 specifications

Rated 3 / 5 based on 1434 user votes.

The EF1 flashlight enhances safety. It illuminates hazards and improves visibility in low light.

Nitecore EF1 / 1

Body, materials, weight, colors

Weight250 g
Length152.2 mm
Body diameter32 mm
Head diameter40 mm
Materialaluminium alloy with HAIII hard-anodized finish

The 250 g weight may provide advantages, such as increased durability. It may also allow for larger batteries, extending the runtime. A smaller flashlight is easier to carry in a pocket, bag, or pouch. This makes it more convenient for everyday use or when you're on the go. The aluminium body of the EF1 has a reputation for being durable and strong. It offers excellent resistance to impacts, scratches, and corrosion.

Flashlight makers widely use HAIII coating. It is durable, resists corrosion, and improves grip. It also looks good. The EF1 flashlight is available in black.

Nitecore EF1 / 2

System, LED, lens, reflector

EmitterCree XM-L2 U3 LED
Color temperature6500 K
Lens10 mm epoxy resin explosion-suppressive
Switchelectronic side

Cree is a US-based LED manufacturer. It is well-regarded for its high-quality products and innovation in lighting. Color temperature is a characteristic of light. It is used to quantify the color appearance of light sources. The EF1 has a smooth reflector. The right reflector focuses light well. It gives you a better hotspot, and it throws better. The flashlight has electronic switches. They have many benefits and extra features compared to mechanical switches.

Performance, flux, intensity, throw

Flux830 lm
Intensity18300 cd
Throw271 m
CD/LM factor22.05

With 830 lm, the EF1 flashlight will offer a brighter and more powerful beam of light. The EF1 flashlight has 18300 cd. It can light objects at greater distances. 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

Modes3 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.

Features, battery, protections

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

The Nitecore EF1 flashlight is powered by 1 x 18650 Li-Ion battery. The EF1 cannot charge batteries. You may need an external charger to keep your battery going. This flashlight has built-in low voltage protection (LVP). It prevents damage from over-discharge, so it doesn't need protected cells. The built-in thermal control adjusts brightness output to prevent overheating. The "5" in the IP54 rating shows the level of protection against solid objects. It's for dust and foreign particles. The flashlight's impact resistance is its ability to withstand physical shocks. It can accomplish this without sustaining any damage.

Accessories, package contents

Package contentslanyard
nylon holster

The package includes a holster to safely store your flashlight. The lanyard prevents accidental loss of the flashlight.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the EF1 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 Nitecore 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
  • side switch
  • multiple modes
  • low-voltage protection
  • thermal regulation
  • dust protected
  • protective holster


  • cool light
  • no mode memory
  • no battery indicator
  • no built-in charger
  • no auxiliary LEDs
  • non-magnetic


Nitecore EF1 / EF1 photo 1.
Nitecore EF1 / EF1 photo 2.
Nitecore EF1 / EF1 photo 3.
Nitecore EF1 / EF1

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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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