Folomov Pen L1 flashlight review

Nichia E21A LED
335 lm output
951 cd intensity
1 x 10900 Li-Ion battery

The Folomov Pen L1 flashlight was released in 2019. It uses Nichia E21A LED, OP reflector and 1 x 10900 Li-Ion battery. The powerful emitter in this flashlight provides up to 335 lm output, 951 cd intensity, and a beam distance of 62 m.

Want to find out if the Folomov Pen L1 is good? Keep reading to know!

Table of Contents

  • Folomov Pen L1 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
  • 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. If you found an error or something lacking in the specifications for the Folomov Pen L1, then tell us.

Folomov Pen L1 / PENL1

The Pen L1 is an impressive flashlight that offers both power and reliability. Its robust build and outstanding illumination make it a versatile lighting instrument. This light has 5 modes of lighting. Without mode memory, each time you turn on the Pen L1, it will start from the default or first mode in the sequence. You can use the strobe function as a self-defense tool. It provides a non-lethal way to deter or disorient attackers.

Folomov Pen L1 specifications

NamePen L1
Rated 3 / 5 based on 1445 user votes.

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

Folomov Pen L1 / 6

Body, materials, weight, colors

Weight37.3 g
Length114 mm
Head diameter14 mm
Materialaluminium alloy with HAIII hard-anodized finish

An extremely lightweight handheld flashlight weighs 37.3 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 Pen L1 flashlight. HAIII is a specific anodizing process. It creates a thicker and harder oxide layer than regular anodizing. This flashlight comes in a sleek black color option.

Folomov Pen L1 / 3

System, LED, lens, reflector

EmitterNichia E21A LED
Color temperature3000 K
LensAR coated glass
Switchmechanical rear

Nichia Corporation is a highly regarded Japanese LED manufacturer. Its high-quality LEDs are well-known. Warm, white light is generally more comfortable. It's also less harsh on the eyes than cool, white light. The OP reflector is a specific type of reflector, it is commonly used in flashlights. The AR coating of the lens helps to reduce these reflections. It does this by changing the lens surface's refractive index.

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.

Folomov Pen L1 / 1

Performance, flux, intensity, throw

Flux335 lm
Intensity951 cd
Throw62 m
CD/LM factor2.84

You mainly need a flashlight for basic tasks like finding keys or navigating in dimly lit areas. 335 lm can be enough. It can also be enough for occasional use around the house. 951 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.

If accurate color is a priority for you, choose a flashlight with a CRI of 90 or above. This flashlight has a high CRI of 98, it provides an unmatched visual experience. It makes colors look vivid, vibrant, and true-to-life.

Folomov Pen L1 / 4

Software, user interface, modes

Modes5 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. The Pen L1 flashlight has a strobe function. It produces a rapid, repetitive flashing of light. The SOS signal is commonly used in outdoor adventures or survival scenarios.

Folomov Pen L1 / 2

Features, battery, protections

Battery1 x 10900 Li-Ion battery
Battery indicatorno
Charger portno
Thermal regulationno

The Pen L1 flashlight's power source is 1 x 10900 Li-Ion battery. It provides reliable, long-lasting energy for top performance. The Pen L1 doesn't have charger port. LVP (Low Voltage Protection) is designed to protect the battery. It stops over-discharging, which can reduce battery life or cause permanent damage. 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.

Folomov Pen L1 / 5

Accessories, package contents

Package contents10900 battery with microUSB
2 x spare o-rings
microUSB cable

The included battery is picked to match the power needs of the Pen L1 flashlight. This ensures reliable and efficient operation. When using spare O-rings, follow the maker's instructions. Use their guidelines for proper installation.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the Pen L1 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 Folomov 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
  • warm light
  • OP reflector
  • AR coated lens
  • tactical switch
  • superior CRI
  • multiple modes
  • tactical strobe
  • SOS/beacon function
  • low-voltage protection
  • waterproof
  • battery included


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


Folomov Pen L1 / PENL1 photo 1.
Folomov Pen L1 / PENL1 photo 2.
Folomov Pen L1 / PENL1 photo 3.
Folomov Pen L1 / PENL1 photo 4.
Folomov Pen L1 / PENL1 photo 5.
Folomov Pen L1 / PENL1 photo 6.
Folomov Pen L1 / PENL1 photo 7.
Folomov Pen L1 / PENL1

Folomov Pen L1 comparisons

According to our statistics, the Folomov Pen L1 flashlight was most often compared on our site with the following flashlights.

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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.