Nitecore NU43 1400lm In-depth review, Pros and Cons

2 x Luminus SST20 LEDs, 1 x unspecified red LED
1400 lm output
3800 cd intensity
integrated 3400mAh Li-Ion battery

The Nitecore NU43 (NU43) released in 2022. It uses 2 x Luminus SST20 LEDs, 1 x unspecified red LED, TIR reflector and integrated 3400mAh Li-Ion battery. The powerful emitter in this headlamp provides up to 1400 lm output, 3800 cd intensity, and a beam distance of 123 m.

The NU43 is a cool headlamp. Headlamps are versatile tools that can be used in a wide range of activities and professions. TIR lens plays a significant role in shaping the beam pattern of the NU43 flashlight. This light has 5 + 2 modes of lighting. The mode memory of NU43 contributes to a more seamless and intuitive user experience. This USB rechargeable flashlight has become a popular choice for both everyday use and demanding situations where reliable lighting is essential.

Nitecore NU43 (NU43) pictures

Nitecore NU43 / NU43 photo
Nitecore NU43 / NU43 photo
Nitecore NU43 / NU43 photo
Nitecore NU43 / NU43 photo
Nitecore NU43 / NU43

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 NU43, then don’t hesite and signal the problem to us.

Nitecore NU43 (NU43) specifications

Rated 4/5 based on 275 user votes.

This headlamp is designed to emit light in the direction you are looking. This feature allows you to focus the beam precisely where you need it, providing better visibility and reducing the risk of accidents or mistakes.


Weight116 g
Length79.8 mm
Body diameter46.1 mm
Head diameter43.9 mm
Dimensions79.8 x 46.1 x 43.9 mm

This 116 g flashlight would be considered slightly heavier than average for a handheld flashlight, but it is still within a reasonable weight range. This weight range is often found in smaller and more compact flashlights designed for everyday use or portability. The length of a flashlight can also impact its balance and weight distribution. A well-balanced flashlight, where the weight is evenly distributed, can be more comfortable to hold for longer periods and reduce hand fatigue. This flashlight comes in a sleek black color option.


Emitter2 x Luminus SST20 LEDs, 1 x unspecified red LED
Color temperature6500 K
Switchdual electronic side

The emitter of NU43 manufactured by Luminus, a US-based LED manufacturer. Luminus is recognized as a reputable LED manufacturer in the lighting industry. They are known for producing high-quality LEDs with excellent performance and reliability. Color temperature is a characteristic of light. It is measured in units called Kelvin (K) and is used to quantify the color appearance of light sources, particularly white light.

The TIR lens of NU43 consists of a single-piece lens made of a transparent material, typically acrylic or polycarbonate. Its shape and internal geometry are designed to achieve specific light distribution patterns, such as flood or spot beams, by manipulating the behavior of light rays. The NU43 utilizes electronic switch. Electronic switches on flashlights provide a range of advantages and additional features compared to mechanical switches.


Flux1400 lm
Intensity3800 cd
Throw123 m
CD/LM factor2.71

The 1400 lm output of NU43 provides greater versatility, as you can adjust the brightness levels to suit different lighting needs. With 3800 cd, the NU43 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 distance refers to the maximum distance at which the flashlight can effectively illuminate an object or target. The stated throw distance typically indicates the point at which the brightness falls below a specified threshold, such as 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.


Modes5 + 2 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 NU43 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. It has the SOS beacon function for an emergency situation. The SOS flashes Morse code so you can signal for help when needed. The SOS signal is recognized as an international distress call and is used to indicate an urgent need for assistance.


Batteryintegrated 3400mAh Li-Ion battery
Battery indicatoryes
Charger portUSB Type-C
Thermal regulationyes
Impact resistance2 m
Specialsproximity sensor
red light
white light

The Nitecore NU43 flashlight is powered by integrated 3400mAh Li-Ion battery. The battery indicator lets you know when the battery is low, charging, or fully charged. The NU43 flashlight can be charged directly from a USB power source, such as a wall adapter, computer, power bank, or car charger. This allows for convenient and versatile charging options, as you can utilize various USB power sources to recharge the flashlight's internal battery.

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 NU43 has thermal protection feature. The thermal protection mechanisms are designed to monitor and regulate the temperature of the flashlight during operation. This feature helps prevent overheating, which can be detrimental to the flashlight's performance, battery, and overall safety.

The "6" in the IP68 rating represents the level of protection against solid objects, specifically dust and foreign particles. It indicates that the NU43 flashlight, is fully protected against the entry of dust and other solid objects. The NU43 flashlight with IP68 rating can withstand being submerged in water beyond 1 meter for a prolonged period, typically specified by the manufacturer. The NU43 flashlight proudly boasts an exceptional impact resistance rating of 2 m.


Package contentsUSB Type-C cable

The performance of the Nitecore NU43 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 NU43 (NU43) comparisons

According to our statistics, the Nitecore NU43 flashlight was most often compared on our site with the following flashlights.

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