
Acebeam PT40 LH351D (2020) review
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.
It uses a TIR lens to form the beam pattern. This light does not have memory function.
Table of contents:
Acebeam PT40 LH351D (PT40LH351D) specifications
Brand | Acebeam |
---|---|
Name | PT40 LH351D |
Type | PT40LH351D |
Rating | |
Launch | 2020 |
Form | flashlight |
Body
The aluminium body of flashlight treated with a Type III hard-anodized, anti-abrasive finish.
Weight | 95 g |
---|---|
Length | 126.8 mm |
Body diameter | 24 mm |
Head diameter | 32.8 mm |
Material | aluminium alloy with HAIII hard-anodized finish |
Colors | black desert tan |
System
A TIR lens works on the principle of total internal reflection. The TIR lens collimates the LED light into efficient, well-controlled light beams that maximize the usable lumens in the target area.
Emitter | 6 x Samsung LH351D LEDs |
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Color temperature | 6000 K |
Reflector | TIR |
Lens | TIR |
Switch | mechanical side |
Performance
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. Well-focused spot beams can be over 100 cd/lm, tactical flashlights are typically between 20-100 cd/lm, and work lights are less than 10 cd/lm.
Flux | 3000 lm |
---|---|
Intensity | 2500 cd |
Throw | 100 m |
CD/LM factor | 0.83 |
Software
Modes | 1 mode |
---|---|
Mode memory | no |
Ramping mode | no |
Strobe | no |
SOS/Beacon | no |
Features
The PT40 LH351D cannot charge batteries directly. You may need an external charger to keep your battery going. 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 built-in thermal control automatically adjusts brightness output to prevent overheating. The PT40 LH351D is magnetic so that the flashlight can be attached to some metallic surfaces.
Battery | 1 x 18650 Li-Ion battery |
---|---|
Battery indicator | no |
Charger port | no |
LVP | yes |
Thermal regulation | yes |
Protection | IPx6 |
Impact resistance | 1.5 m |
AUX LEDs | no |
Magnetic | yes |
Accessories
The clip is useful to keep the light secured in your pocket.
Package contents | clip |
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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.
The specifications above 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) pictures

Acebeam PT40 LH351D (PT40LH351D) comparisons
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