Acebeam H50 Osram 1250lm In-depth review, Pros and Cons

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

The Acebeam H50 Osram (H50O) 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.

This Acebeam headlamp plays a crucial role in safety, particularly during nighttime or in emergency situations. It uses a TIR lens to form the beam pattern. This light has 5 modes of lighting. Instead of having to cycle through multiple modes to find the desired setting, mode memory of H50 Osram ensures that the flashlight starts in the mode you prefer or need. The flashlight is rechargeable easily via USB port.

Acebeam H50 Osram (H50O) pictures

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

The specifications below are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the Acebeam H50 Osram, then don’t hesite and signal the problem to us.

Acebeam H50 Osram (H50O) specifications

NameH50 Osram
Rated 4 / 5 based on 1366 user votes.

Headlamps are versatile lighting tools that provide convenience, hands-free operation, and illumination in a wide range of activities and environments.


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

This 62 g flashlight would generally be considered lightweight and easy to handle for most people. The ideal length of a flashlight depends on personal preference, intended use, and the specific features and functionality you're looking for. Aluminium body of H50 Osram is known for its durability and strength. It offers excellent resistance to impacts, scratches, and corrosion. Hard-Anodized Type III (HAIII) is a specific anodizing process that creates a thicker and harder oxide layer compared to regular anodizing. The H50 Osram flashlight is available in black.


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

Osram LEDs are known for their high performance, energy efficiency, and reliability. The choice of color temperature depends on the specific lighting application and personal preferences. The TIR lens collimates the LED light into efficient, well-controlled light beams that maximize the usable lumens in the target area. Some flashlights with electronic switches have programmable features that allow users to customize the behavior of the flashlight.


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 with 10900 cd has an extended throw distance, allowing you to illuminate objects or areas at greater distances. The throw is the calculated 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.


Modes5 modes
Mode memoryyes
Ramping modeno

Modes on a flashlight refer to different output settings or levels of brightness that can be selected to suit different needs and preferences. Mode memory means that the flashlight will remember the mode you were using when the light was last turned off, and when you turn it on again. The SOS code consists of three short signals, followed by three long signals, and then three short signals again.


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 helps prevent unexpected power failures during critical situations and ensures that the flashlight is ready for use when needed. USB rechargeable flashlights have become increasingly popular in recent years due to their convenience and sustainability. This flashlight has a built-in low voltage protection (LVP) to prevent damage to the cell from over-discharge, so protected cells are not necessary.

The H50 Osram has thermal protection feature. The thermal protection mechanisms are designed to monitor and regulate the temperature of the flashlight during operation. The "8" in the IPx8 rating indicates the highest level of protection against water ingress.


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

Instead of searching for compatible O-rings, having spare O-rings readily available allows for convenient and immediate repairs or replacements.

The performance of the Acebeam H50 Osram flashlight is measured according to the ANSI / NEMA FL1 Standard 30 seconds after switching the light on. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

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