Acebeam TK18 CU Nichia 1650lm In-depth review, Pros and Cons

3 x Nichia 219C LEDs
1650 lm output
9160 cd intensity
1 x 18650 Li-Ion battery

The Acebeam TK18 CU Nichia (TK18CUN) released in 2019. It uses 3 x Nichia 219C LEDs, TIR reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 1650 lm output, 9160 cd intensity, and a beam distance of 191 m.

The TK18 CU Nichia flashlight is an indispensable tool in various situations, from everyday tasks and outdoor adventures to emergency preparedness and professional use. TIR technology minimizes hotspots, dark spots, and irregularities in the beam of TK18 CU Nichia. This light has 5 modes of lighting. The mode memory of TK18 CU Nichia eliminates the need to cycle through different modes every time you turn on the flashlight, providing convenience and saving time. The strobe function can be utilized as a self-defense tool, providing a non-lethal means to deter or disorient attackers

Acebeam TK18 CU Nichia (TK18CUN) pictures

Acebeam TK18 CU Nichia / TK18CUN photo
Acebeam TK18 CU Nichia / TK18CUN photo
Acebeam TK18 CU Nichia / TK18CUN photo
Acebeam TK18 CU Nichia / TK18CUN photo
Acebeam TK18 CU Nichia / TK18CUN

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 TK18 CU Nichia, then don’t hesite and signal the problem to us.

Acebeam TK18 CU Nichia (TK18CUN) specifications

NameTK18 CU Nichia
Rated 4/5 based on 1271 user votes.

The TK18 CU Nichia flashlight enhance personal safety and security. It allows you to illuminate dark areas, identify potential hazards, or deter threats by shining light on them.


Weight124.5 g
Length105 mm
Body diameter23 mm
Head diameter25.5 mm

The TK18 CU Nichia generally comfortable to hold for extended periods and easy to carry in pockets or bags. It's important to consider the length of the flashlight to ensure it fits comfortably in your desired carrying method. The TK18 CU Nichia flashlight is offered in a stylish copper color.


Emitter3 x Nichia 219C LEDs
Color temperature4000 K
Switchmechanical rear

Nichia LEDs are renowned for their exceptional color quality, high efficiency, and long lifespan. Warm white light is generally considered more comfortable and less harsh on the eyes compared to cool white light. The TIR lens of TK18 CU Nichia can minimize light loss and achieve high light output by capturing and redirecting a significant portion of the emitted light. This can result in improved overall beam quality, better beam control, and reduced stray light.

The TK18 CU Nichia has mechanical switch. Mechanical switches are known for their durability and reliability. They are typically built with robust construction, making them resistant to wear and tear, and capable of enduring various environmental conditions. The TK18 CU Nichia uses a reear switch. Rear switches are commonly found on tactical flashlights designed for law enforcement, military, and self-defense purposes. The rear switch allows for quick and easy momentary activation or constant-on activation, enabling rapid response and tactical maneuvering.


Flux1650 lm
Intensity9160 cd
Throw191 m
CD/LM factor5.55

With 1650 lm, the TK18 CU Nichia flashlight will offer a brighter and more powerful beam of light. This higher output can be advantageous in various situations where you require enhanced visibility or need to illuminate larger areas. With 9160 cd, the TK18 CU Nichia flashlight provides a noticeably brighter and more intense beam of light. It can illuminate objects or areas with greater clarity and visibility, even at longer distances.

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. It quantifies the concentration of light emitted by the flashlight in relation to the total amount of light produced. If accurate color representation is a priority for your specific needs, a flashlight with a CRI of 90 or above is highly recommended. The TK18 CU Nichia flashlight with a CRI of 95 offers the most accurate and true-to-life color representation, allowing you to perceive colors as they were intended to be seen.


Modes5 modes
Mode memoryyes
Ramping modeno

Modes on a flashlight refer to different output settings or levels of brightness that can be selected to suit different needs and preferences. The TK18 CU Nichia has mode memory. Mode memory means that the flashlight will remember the mode you were using when the light was last turned off, and when you turn it on again. The strobe function on the TK18 CU Nichia flashlight is a feature that produces a rapid and repetitive flashing of light. It is designed to create a disorienting or attention-grabbing effect.


Battery1 x 18650 Li-Ion battery
Battery indicatorno
Charger portno
Thermal regulationyes

The power source of the TK18 CU Nichia flashlight is 1 x 18650 Li-Ion battery, providing reliable and long-lasting energy for optimal performance. The TK18 CU Nichia cannot charge batteries directly. You may need an external charger to keep your battery going. When the TK18 CU Nichia flashlight detects that the voltage of the battery has dropped to a certain threshold, it automatically reduces or cuts off the power output to prevent further discharge. This helps to preserve the battery's capacity and prevent it from reaching a critically low voltage level.

The built-in thermal control automatically adjusts brightness output to prevent overheating. The "8" in the IPx8 rating indicates the highest level of protection against water ingress.


Package contents2 x spare o-rings
spare rubber cover

The clip allows you to attach this flashlight to a belt, pocket, backpack, or other items, enabling convenient hands-free carry. This is especially helpful when you need quick access to your flashlight while keeping your hands available for other tasks. Attaching a lanyard to your TK18 CU Nichia flashlight provides an additional layer of security, reducing the risk of accidental drops or loss. Instead of searching for compatible O-rings or waiting for replacements to arrive, having spare O-rings readily available allows for convenient and immediate repairs or replacements.

The performance of the Acebeam TK18 CU 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.

Acebeam TK18 CU Nichia (TK18CUN) comparisons

According to our statistics, the Acebeam TK18 CU Nichia flashlight was most often compared on our site with the following flashlights.

Acebeam Rider RX 2.0 (RIDERRXV2) Acebeam Rider RX 2.0 Acebeam E75 Nichia (E75N) Acebeam E75 Nichia Acebeam X75 XHP70.2 (X75XHP702) Acebeam X75 XHP70.2 Acebeam L19 v2.0 PM1 (L19V20PM1) Acebeam L19 v2.0 PM1 Acebeam TK18 CU Osram (TK18CUO) Acebeam TK18 CU Osram Acebeam TK16 AL XPG3 (TK16ALXPG3) Acebeam TK16 AL XPG3 Acebeam K75 (K75) Acebeam K75 Acebeam H50 LH351D (H50LH351D) Acebeam H50 LH351D

If there’s information about the Acebeam TK18 CU Nichia that you would like to see on this site, then write to us.

FlashlightChart.com / Flashlights / Acebeam / Acebeam TK18 CU Nichia (2019)