Nitecore T4K 4000lm In-depth review, Pros and Cons

4 x Cree XP-L2 V6 LEDs
4000 lm output
10900 cd intensity
integrated 1000 mAh Li-Ion battery

The Nitecore T4K (T4K) released in 2021. It uses 4 x Cree XP-L2 V6 LEDs, TIR reflector and integrated 1000 mAh Li-Ion battery. The powerful emitter in this flashlight provides up to 4000 lm output, 10900 cd intensity, and a beam distance of 209 m.

The T4K lashlight offers a versatile lighting solution. TIR technology minimizes hotspots, dark spots, and irregularities in the beam of T4K. This light has 5 modes of lighting. The mode memory of T4K eliminates the need to cycle through different modes every time you turn on the flashlight, providing convenience and saving time. This USB rechargeable flashlight eliminates the need for disposable batteries, offering a more eco-friendly and cost-effective solution.

Nitecore T4K (T4K) pictures

Nitecore T4K / T4K photo
Nitecore T4K / T4K photo
Nitecore T4K / T4K photo
Nitecore T4K / T4K photo
Nitecore T4K / T4K photo
Nitecore T4K / T4K

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 Nitecore T4K, then don’t hesite and signal the problem to us.

Nitecore T4K (T4K) specifications

Rated 4/5 based on 1077 user votes.

The T4K flashlight offers precise and focused illumination. Unlike ambient or overhead lighting sources, flashlights allow you to direct the light exactly where you need it.


Weight77 g
Length82.3 mm
Head diameter29.2 mm
Materialaluminium alloy with HAIII hard-anodized finish

The T4K is small, compact, and designed for ultra-portability. The ideal length of a flashlight depends on personal preference, intended use, and the specific features and functionality you're looking for. The aluminium body of T4K has excellent thermal conductivity, meaning it can effectively dissipate heat generated by the flashlight's components, such as the LED or battery. The HAIII coating provides excellent corrosion resistance, protecting the underlying aluminum from exposure to moisture, humidity, and other corrosive elements. It helps maintain the appearance and functionality of the flashlight, even in harsh environments. The choice of flashlight body color can be influenced by factors such as intended use, environment, personal style, and functional requirements.


Emitter4 x Cree XP-L2 V6 LEDs
Color temperature6500 K
Switchdual electronic side

Cree is widely regarded as a reputable LED manufacturer and has a track record of delivering high-quality and innovative lighting solutions. Warm white light is generally considered more comfortable and less harsh on the eyes compared to cool white light. The TIR lens of T4K 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 T4K has electronic switch. The electronic switches may have a higher likelihood of standby drain compared to mechanical switches since they require a small amount of power for operation.


Flux4000 lm
Intensity10900 cd
Throw209 m
CD/LM factor2.73

With 4000 lm, the T4K flashlight will provide an exceptionally bright and powerful beam of light. It can illuminate large areas, outdoor spaces, or even act as a temporary spotlight in certain situations. The T4K flashlight with 10900 cd has an extended throw distance, allowing you to illuminate objects or areas at greater distances. This can be advantageous for outdoor activities, search and rescue operations, or scenarios where long-range visibility is required.

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.


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 T4K 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.


Batteryintegrated 1000 mAh Li-Ion battery
Battery indicatorno
Charger portUSB Type-C
Thermal regulationyes
Impact resistance1 m
SpecialsOLED display

The power source of the T4K flashlight is integrated 1000 mAh Li-Ion battery, providing reliable and long-lasting energy for optimal performance. The USB charger port on a flashlight can be particularly useful in emergency situations where access to power outlets may be limited. When the T4K 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 "5" in the IP54 rating represents the level of protection against solid objects, specifically dust and foreign particles. The IP54 rated flashlight is protected against dust ingress to a limited extent. With an impressive impact resistance rating of 1 m, the T4K flashlight is built to endure accidental drops or impacts, ensuring its resilience and dependable performance in demanding situations.


Package contentsclip

When the flashlight is clipped to a suitable location, it can be angled or positioned to provide hands-free illumination.

The performance of the Nitecore T4K 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.

Nitecore T4K (T4K) comparisons

According to our statistics, the Nitecore T4K flashlight was most often compared on our site with the following flashlights.

Nitecore NM01 (NM01) Nitecore NM01 Nitecore TM06S (TM06S) Nitecore TM06S Nitecore Thumb (THUMB) Nitecore Thumb Nitecore TIP 2 (TIP2) Nitecore TIP 2 Nitecore Ci6 (CI6) Nitecore Ci6 Nitecore EA21 (EA21) Nitecore EA21 Nitecore E4K (E4K) Nitecore E4K Nitecore EA41 (EA41) Nitecore EA41

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