Acebeam H50 LH351D 2000lm In-depth review, Pros and Cons

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

The Acebeam H50 LH351D (H50LH351D) 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.

Wear this headlamp on your head or helmet, you can direct the light where you look. This leaves your hands free for tasks or activities. 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. It is easy to carry.

Acebeam H50 LH351D (H50LH351D) pictures

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

We base the specifications below on the official data published by the manufacturer, while also considering user reviews. If you found an error or something lacking in the specifications for the Acebeam H50 LH351D, then tell us.

Acebeam H50 LH351D (H50LH351D) specifications

NameH50 LH351D
Rated 4 / 5 based on 1372 user votes.

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


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. A smaller flashlight is easier to carry in a pocket, bag, or pouch. This makes it more convenient for everyday use or when you're on the go. The aluminum bodies can be anodized. This adds a protective layer and a wide range of color options for flashlight bodies. HAIII is a specific anodizing process. It creates a thicker and harder oxide layer than regular anodizing. This flashlight features a captivating black color.


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. It can create many beam patterns, from wide angles to spotlights. Some flashlights with electronic switches have programmable features. They allow users to customize the behavior of the flashlight.


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

The 2000 lm output of H50 LH351D provides great flexibility. You can adjust the brightness to fit different needs. 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.


Modes5 modes
Mode memoryyes
Ramping modeno

A flashlight's modes are different output settings or brightness levels. They can be chosen to meet different needs and preferences. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. It stays in that mode when you turn it on again. The SOS flashes Morse code so you can signal for help when needed.


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. It works with a USB power source. The Low Voltage Protection helps save the battery's capacity. It stops it from reaching a critically low voltage. The H50 LH351D has thermal protection feature. These mechanisms track and regulate the flashlight's temperature as it operates. The flashlight has an IPx8 rating. It can withstand being submerged in water beyond 1 meter for a prolonged period. The manufacturer specifies this.


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

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

According to the ANSI/NEMA FL1 Standard, we measure the performance of the Acebeam H50 LH351D flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

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