Acebeam H50 LH351D headlamp review

3 x Samsung LH351D LEDs
2000 lm output
4700 cd intensity
1 x 18650 Li-Ion battery

The Acebeam H50 LH351D headlamp was released in 2020. It uses 3 x Samsung LH351D LEDs, TIR reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this headlamp provides up to 2000 lm output, 4700 cd intensity, and a beam distance of 137 m.

Want to know if the H50 LH351D is a game-changer? Stay with us!

Table of Contents

  • Acebeam H50 LH351D specifications
    • Body, materials, weight, colors
    • System, LED, lens, reflector
    • Performance, flux, intensity, throw
    • Software, user interface, modes
    • Features, battery, protections
    • Accessories, package contents
    • Links
  • 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.

Acebeam H50 LH351D / H50LH351D

Wear this headlamp on your head or helmet, you can direct the light where you look. The H50 LH351D has TIR lenses, engineers design them to minimize light scattering and decrease lens artifacts. This light has 5 modes of lighting. With mode memory, when you turn off the H50 LH351D and then turn it back on, it will activate the last used mode. This USB rechargeable flashlight is small and light.

Acebeam H50 LH351D specifications

NameH50 LH351D
Rated 4 / 5 based on 1488 user votes.

Headlamps have a light attached to a headband. This allows users to wear them without using their hands.

Acebeam H50 LH351D / 4

Body, materials, weight, colors

Weight62 g
Length83 mm
Body diameter26 mm
Head diameter33 mm
Dimensions83 x 33 x 26 mm
Materialaluminium alloy with HAIII hard-anodized finish

The 62 g flashlight may not provide the same level of brightness or features as larger models. The best flashlight size depends on personal preference. Aluminium is a lightweight material, which is beneficial for H50 LH351D flashlight. HAIII is a specific anodizing process, it creates a thicker and harder oxide layer than regular anodizing. This flashlight features a captivating black color.

Acebeam H50 LH351D / 3

System, LED, lens, reflector

Emitter3 x Samsung LH351D LEDs
Color temperature6500 K
Switchelectronic side

The emitter of H50 LH351D manufactured by Samsung, a Korean LED manufacturer. The color temperature choice depends on the light's use and personal taste. This TIR lens offers flexibility. Some flashlights with electronic switches have programmable features.

Acebeam H50 LH351D / 2

Performance, flux, intensity, throw

Flux2000 lm
Intensity4700 cd
Throw137 m
CD/LM factor2.35

The 2000 lm output of H50 LH351D provides great flexibility. The H50 LH351D flashlight has 4700 cd, it provides a much brighter and more intense beam. 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.

Acebeam H50 LH351D / 1

Software, user interface, modes

Modes5 modes
Mode memoryyes
Ramping modeno

A flashlight's modes are different output settings or brightness levels. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. The SOS signal is commonly used in outdoor adventures or survival scenarios.

Features, battery, protections

Battery1 x 18650 Li-Ion battery
Battery indicatoryes
Charger portUSB Type-C
Thermal regulationyes

The H50 LH351D flashlight utilizes 1 x 18650 Li-Ion battery as its power source. The battery indicator lets you know when the battery is low, charging, or fully charged. This flashlight can charge the battery with a built-in charger. The Low Voltage Protection helps save the battery's capacity. The thermal protection feature helps prevent overheating. The flashlight has an IPx8 rating. It can withstand being submerged in water beyond 1 meter for a prolonged period.

Accessories, package contents

Package contents2 x spare o-rings
USB Type-C cable

Instead of searching for matching O-rings, having spare O-rings allows quick fixes.

Official sitehttps://www.acebeam.com/

Conclusion, pros and cons

This Acebeam 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
  • TIR lens
  • side switch
  • adequate performance
  • multiple modes
  • mode memory
  • SOS/beacon function
  • battery indicator
  • USB charger
  • low-voltage protection
  • thermal regulation
  • waterproof


  • cool light
  • low intensity
  • no auxiliary LEDs
  • non-magnetic


Acebeam H50 LH351D / H50LH351D photo 1.
Acebeam H50 LH351D / H50LH351D photo 2.
Acebeam H50 LH351D / H50LH351D photo 3.
Acebeam H50 LH351D / H50LH351D photo 4.
Acebeam H50 LH351D / H50LH351D photo 5.
Acebeam H50 LH351D / H50LH351D


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Updated: May 2, 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.