Acebeam H50 Osram headlamp review

3 x Osram KW CSLNM1.TG LED
1250 lm output
10900 cd intensity
1 x 18650 Li-Ion battery

The Acebeam H50 Osram headlamp was released in 2020. It uses 3 x Osram KW CSLNM1.TG LED, TIR reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this headlamp provides up to 1250 lm output, 10900 cd intensity, and a beam distance of 209 m.

Curious if this Acebeam headlamp is great? Keep reading to find out!

Table of Contents

  • Acebeam H50 Osram 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 Osram / H50O

This Acebeam headlamp plays a crucial role in safety. It uses a TIR lens to form the beam pattern. This light has 5 modes of lighting. The H50 Osram's mode memory makes the flashlight start in your preferred or needed mode. The flashlight is rechargeable easily via USB port.

Acebeam H50 Osram specifications

NameH50 Osram
Rated 4 / 5 based on 1486 user votes.

Headlamps are versatile lighting tools, they are hands-free.

Acebeam H50 Osram / 1

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 flashlight is lightweight and easy to handle for most people. A smaller flashlight is easier to carry in a pocket, bag, or pouch. Aluminium is a lightweight material, which is beneficial for H50 Osram flashlight. HAIII is a specific anodizing process, it creates a thicker and harder oxide layer than regular anodizing. The H50 Osram flashlight is available in black.

Acebeam H50 Osram / 3

System, LED, lens, reflector

Emitter3 x Osram KW CSLNM1.TG LED
Color temperature6500 K
Switchelectronic side

We 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 TIR lens makes the LED light collimated. These beams maximize the usable lumens in the target area. Some flashlights with electronic switches have programmable features.

Acebeam H50 Osram / 2

Performance, flux, intensity, throw

Flux1250 lm
Intensity10900 cd
Throw209 m
CD/LM factor8.72

With 1250 lm, the H50 Osram flashlight will offer a brighter and more powerful beam of light. The H50 Osram flashlight has 10900 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 candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam.

Acebeam H50 Osram / 4

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 flashes Morse code so you can signal for help when needed.

Features, battery, protections

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

The H50 Osram flashlight utilizes 1 x 18650 Li-Ion battery as its power source. The battery indicator prevents surprise power failures. USB rechargeable flashlights are more popular now. This flashlight has built-in low voltage protection (LVP). It prevents damage from over-discharge. The built-in thermal control adjusts brightness output to prevent overheating. The "8" in the IPx8 rating means the highest level of protection.

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
  • no auxiliary LEDs
  • non-magnetic


Acebeam H50 Osram / H50O photo 1.
Acebeam H50 Osram / H50O photo 2.
Acebeam H50 Osram / H50O photo 3.
Acebeam H50 Osram / H50O photo 4.
Acebeam H50 Osram / H50O photo 5.
Acebeam H50 Osram / H50O


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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.