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Acebeam H40 SST20 (2019) review

2019
Luminus SST20 LED
600 lm output
4104 cd intensity
1 x 14500 Li-Ion or 1 x AA NiMH battery

The Acebeam H40 SST20 (H40SST20) released in 2019. It uses Luminus SST20 LED, OP reflector and 1 x 14500 Li-Ion or 1 x AA NiMH battery. The powerful emitter in this headlamp provides up to 600 lm output, 4104 cd intensity, and a beam distance of 128 m.

This light has 3 modes of lighting. The memory function is a nice feature, the light will remember the last used mode.

Table of contents:

Acebeam H40 SST20 (H40SST20) specifications

Brand
Acebeam
Name
H40 SST20
Type
H40SST20
Rating
Rated 3/5 based on 128 user votes.
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Launch
2019
Form
headlamp

Body

The aluminium body of flashlight treated with a Type III hard-anodized, anti-abrasive finish.

Weight
34 g
Length
64.7 mm
Body diameter
23.4 mm
Head diameter
26.9 mm
Material
aluminium alloy with HAIII hard-anodized finish
Colors
black

System

The emitter of H40 SST20 manufactured by Luminus, a US-based LED manufacturer. The H40 SST20 has an orange peel (OP) textured reflector. Orange peel reflectors have smoother beams. It has an AR coated lens.

Emitter
Luminus SST20 LED
Color temperature
4000 K
Reflector
OP
Lens
toughtened AR coated glass
Switch
electronic 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
600 lm
Intensity
4104 cd
Throw
128 m
CD/LM factor
6.84
CRI
95

Software

The H40 SST20 has mode memory. Mode memory means that the light will remember the mode you were using when the light was last turned off, and when you turn it on again. The ramping mode of the H40 SST20 is intuitive, and lets you seamlessly ramp the output up and down over almost the entire output range. It has the SOS beacon function for an emergency situation. The SOS flashes Morse code so you can signal for help when needed.

Modes
3 modes
Mode memory
yes
Ramping mode
yes
Strobe
no
SOS/Beacon
yes

Features

The H40 SST20 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. This light does not have temperature control feature.

Battery
1 x 14500 Li-Ion or 1 x AA NiMH battery
Battery indicator
no
Charger port
no
LVP
yes
Thermal regulation
no
Protection
IP68
AUX LEDs
no
Magnetic
no

Accessories

Package contents
2 x spare o-rings
headband

The performance of the Acebeam H40 SST20 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 H40 SST20, then don’t hesite and signal the problem to us.

Acebeam H40 SST20 (H40SST20) pictures

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