Manker PL21 Nichia flashlight review

Nichia 219C LED
160 lm output
650 cd intensity
2 x AAA batteries

The Manker PL21 Nichia flashlight was released in 2018. It uses Nichia 219C LED, OP reflector and 2 x AAA batteries. The powerful emitter in this flashlight provides up to 160 lm output, 650 cd intensity, and a beam distance of 51 m.

Curious to know if this Manker flashlight is top-notch? Stay tuned for the answer!

Table of Contents

  • Manker PL21 Nichia 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 Manker PL21 Nichia, then tell us.

Manker PL21 Nichia / PL21NICHIA

The PL21 Nichia 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. Without mode memory, this flashlight always starts in the default mode.

Manker PL21 Nichia specifications

NamePL21 Nichia
Rated 3 / 5 based on 1464 user votes.

This Manker flashlight is compact and handheld. It is easy to carry and maneuver.

Manker PL21 Nichia / 2

Body, materials, weight, colors

Weight22 g
Length133 mm
Head diameter14 mm
Materialaluminium alloy with HAIII hard-anodized finish

The 22 g flashlight may not provide the same level of brightness or features as larger models. A balanced flashlight has even weight. It can be more comfortable to hold for longer and reduce hand fatigue. The aluminum bodies can be anodized. This adds a protective layer and a wide range of color options for flashlight bodies. Flashlight makers widely use HAIII coating. It is durable, resists corrosion, and improves grip. It also looks good. This flashlight features a captivating black color.

Manker PL21 Nichia / 1

System, LED, lens, reflector

EmitterNichia 219C LED
Color temperature4000 K
LensAR coated glass
Switchmechanical rear

People often recognize Nichia LEDs for their quality. They are durable and follow industry standards. Color temperature is a characteristic of light. It is used to quantify the color appearance of light sources. The advantage of the orange peel (OP) reflector is that it can minimize glare and reduce eye strain. The AR coating on the lens maximizes light transmission. This makes the flashlight more effective in darker environments.

Mechanical switches often offer tactile feedback. Users can feel a distinct click or resistance when they press the switch. The rear switch of the PL21 Nichia is rugged and durable. It can withstand harsh conditions and repeated use.

Performance, flux, intensity, throw

Flux160 lm
Intensity650 cd
Throw51 m
CD/LM factor4.06

You mainly need a flashlight for basic tasks like finding keys or navigating in dimly lit areas. 160 lm can be enough. It can also be enough for occasional use around the house. 650 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 cd/lm factor is the candela-to-lumen ratio. It shows how concentrated a light source's output is.

A flashlight with a higher CRI can show colors more accurately. This is useful for examining objects, it helps tell colors apart in low-light or nighttime. The PL21 Nichia has a CRI of 90, it is useful in everyday use. Accurate color perception improves the visual experience..

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

Battery2 x AAA batteries
Battery indicatorno
Charger portno
Thermal regulationno

The Manker PL21 Nichia flashlight is powered by 2 x AAA batteries. The PL21 Nichia doesn't have charger port. The PL21 Nichia flashlight lacks built-in LVP. You should use a protected battery to prevent over-discharging. Flashlights without thermal protection may be more susceptible to overheating under extreme conditions. The flashlight has an IPx8 rating. It can withstand being submerged in water beyond 1 meter for a prolonged period. The manufacturer specifies this.

Accessories, package contents

Package contentsspare o-ring

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 PL21 Nichia 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 Manker 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
  • waterproof


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


Manker PL21 Nichia / PL21NICHIA photo 1.
Manker PL21 Nichia / PL21NICHIA photo 2.
Manker PL21 Nichia / PL21NICHIA photo 3.
Manker PL21 Nichia / PL21NICHIA

Manker PL21 Nichia comparisons

According to our statistics, the Manker PL21 Nichia 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.