Acebeam PT40 LH351D 3000lm In-depth review, Pros and Cons

6 x Samsung LH351D LEDs
3000 lm output
2500 cd intensity
1 x 18650 Li-Ion battery

The Acebeam PT40 LH351D (PT40LH351D) released in 2020. It uses 6 x Samsung LH351D LEDs, TIR reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 3000 lm output, 2500 cd intensity, and a beam distance of 100 m.

The PT40 LH351D flashlight provides instant illumination at the touch of a switch. This immediate response is particularly useful in emergency situations. TIR technology minimizes hotspots, dark spots, and irregularities in the beam of PT40 LH351D. Lack of mode memory means you need to manually adjust the flashlight's settings each time you turn it on to get the desired mode.

Acebeam PT40 LH351D (PT40LH351D) pictures

Acebeam PT40 LH351D / PT40LH351D photo 1.
Acebeam PT40 LH351D / PT40LH351D photo 2.
Acebeam PT40 LH351D / PT40LH351D

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 PT40 LH351D, then don’t hesite and signal the problem to us.

Acebeam PT40 LH351D (PT40LH351D) specifications

NamePT40 LH351D
Rated 4 / 5 based on 1207 user votes.

The PT40 LH351D flashlight allows you to illuminate dark areas, identify potential hazards, or deter threats by shining light on them.


Weight95 g
Length126.8 mm
Body diameter24 mm
Head diameter32.8 mm
Materialaluminium alloy with HAIII hard-anodized finish
desert tan

The PT40 LH351D is small, compact, and designed for ultra-portability. A shorter flashlight is generally easier to carry in a pocket, bag, or pouch, making it more convenient for everyday use or when you're on the go. The aluminium body of PT40 LH351D has excellent thermal conductivity, meaning it can effectively dissipate heat generated by the flashlight's components. The HAIII coating offers a uniform and attractive finish, often available in different colors, giving the flashlight a sleek and professional look. The choice of flashlight body color can be influenced by factors such as intended use, environment, personal style, and functional requirements.


Emitter6 x Samsung LH351D LEDs
Color temperature6000 K
Switchmechanical side

The emitter of PT40 LH351D manufactured by Samsung, a Korean LED manufacturer. Warm white light is generally considered more comfortable and less harsh on the eyes compared to cool white light. The TIR lens of PT40 LH351D can minimize light loss and achieve high light output by capturing and redirecting a significant portion of the emitted light. Mechanical switches are typically built with robust construction, making them resistant to wear and tear, and capable of enduring various environmental conditions.


Flux3000 lm
Intensity2500 cd
Throw100 m
CD/LM factor0.83

With 3000 lm, the PT40 LH351D flashlight will offer a brighter and more powerful beam of light. With 2500 cd, the PT40 LH351D flashlight provides a noticeably brighter and more intense beam of light. The throw is the calculated distance in meters at which the flashlight produces a light intensity of 0.25 lux. Candela per lumen (cd/lm) is a measure of a flashlight's beam intensity relative to its total luminous flux or output.


Modes1 mode
Mode memoryno
Ramping modeno


Battery1 x 18650 Li-Ion battery
Battery indicatorno
Charger portno
Thermal regulationyes
Impact resistance1.5 m

The power source of the PT40 LH351D flashlight is 1 x 18650 Li-Ion battery, providing reliable and long-lasting energy for optimal performance. The PT40 LH351D cannot charge batteries directly. You may need an external charger to keep your battery going. When the flashlight detects that the voltage of the battery has dropped to a certain threshold, it automatically reduces or cuts off the power output.

The thermal protection feature helps prevent overheating, which can be detrimental to the flashlight's performance, battery, and overall safety. The IPx6 rating indicates that the flashlight has a protection against water jets. The impact resistance of a flashlight refers to its ability to withstand physical shocks or impacts without being damaged. The PT40 LH351D is magnetic so that the flashlight can be attached to some metallic surfaces.


Package contentsclip

The clip is especially helpful when you need quick access to your flashlight while keeping your hands available for other tasks.

The performance of the Acebeam PT40 LH351D 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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