Acebeam TK17 Nichia (2020) review

3 x Nichia 219C LEDs
1400 lm output
8500 cd intensity
1 x 18350 Li-Ion battery

The Acebeam TK17 Nichia (TK17N) released in 2020. It uses 3 x Nichia 219C LEDs, TIR reflector and 1 x 18350 Li-Ion battery. The powerful emitter in this flashlight provides up to 1400 lm output, 8500 cd intensity, and a beam distance of 184 m.

It uses a TIR lens to form the beam pattern. This light has 5 modes of lighting. The memory function is a nice feature, the light will remember the last used mode.

Table of contents:

Acebeam TK17 Nichia (TK17N) specifications

NameTK17 Nichia
Rated 4/5 based on 1009 user votes.


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

Weight50.3 g
Length82.8 mm
Body diameter21 mm
Head diameter25.4 mm
Materialaluminium alloy with HAIII hard-anodized finish


The emitter of TK17 Nichia manufactured by Nichia, a Japanese LED manufacturer. 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.

Emitter3 x Nichia 219C LEDs
Color temperature4000 K
Switchelectronic rear


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.

Flux1400 lm
Intensity8500 cd
Throw184 m
CD/LM factor6.07


The TK17 Nichia 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.

Modes5 modes
Mode memoryyes
Ramping modeno


The TK17 Nichia 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.

Battery1 x 18350 Li-Ion battery
Battery indicatorno
Charger portno
Thermal regulationyes


It comes with a battery. The battery must be fully charged before you first use your TK17 Nichia. The clip is useful to keep the light secured in your pocket.

Package contents18350 battery with microUSB
2 x spare o-rings
microUSB cable

The performance of the Acebeam TK17 Nichia 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 TK17 Nichia, then don’t hesite and signal the problem to us.

Acebeam TK17 Nichia (TK17N) pictures

Acebeam TK17 Nichia / TK17N photo Acebeam TK17 Nichia / TK17N photo Acebeam TK17 Nichia / TK17N photo Acebeam TK17 Nichia / TK17N photo
Acebeam TK17 Nichia / TK17N

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