Klarus E2 1600lm In-depth review, Pros and Cons

1600 lm output
9025 cd intensity
1 x 18650 Li-Ion battery

The Klarus E2 (E2) released in 2020. It uses Cree XHP35 HI LED, TIR reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 1600 lm output, 9025 cd intensity, and a beam distance of 190 m.

The E2 is a powerful and reliable flashlight. With its impressive illumination capabilities and durable construction, it serves as an exceptional lighting tool for various situations and environments. TIR technology minimizes hotspots, dark spots, and irregularities in the beam of E2. This light has 4 modes of lighting. The mode memory of E2 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 This Klarus USB rechargeable flashlight comes with versatile charging options.

Klarus E2 (E2) pictures

Klarus E2 / E2 photo
Klarus E2 / E2 photo
Klarus E2 / E2 photo
Klarus E2 / E2 photo
Klarus E2 / E2 photo
Klarus E2 / E2 photo
Klarus E2 / E2

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 Klarus E2, then don’t hesite and signal the problem to us.

Klarus E2 (E2) specifications

Rated 3/5 based on 1224 user votes.

The E2 flashlight enhance personal safety and security. It allows you to illuminate dark areas, identify potential hazards, or deter threats by shining light on them.


Weight57.6 g
Length115.3 mm
Head diameter23.2 mm
Materialaluminium alloy with HAIII hard-anodized finish

The E2 is small, compact, and designed for ultra-portability. The length of the E2 flashlight can affect its portability. A shorter flashlight is generally easier to carry in a pocket, bag, or pouch, making it more convenient for everyday use or when you're on the go. The aluminium body of E2 has excellent thermal conductivity, meaning it can effectively dissipate heat generated by the flashlight's components, such as the LED or battery.

The body of E2 flashlight treated with a Type III hard-anodized, anti-abrasive finish. The E2 flashlight is offered in a stylish black color.


EmitterCree XHP35 HI LED
Color temperature6500 K
Switchmechanical rear, mode pedal rear

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 E2 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 multiple switch configuration on the E2 flashlight can be a useful option, providing additional versatility and convenience in operating the flashlight. The E2 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 rear switch of E2 is typically operated with the thumb or finger, making it easily accessible and convenient to use. The positioning of the switch at the rear of the flashlight allows for natural and intuitive operation, particularly in one-handed scenarios.


Flux1600 lm
Intensity9025 cd
Throw190 m
CD/LM factor5.64

With 1600 lm, the E2 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 9025 cd, the E2 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.


Modes4 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 E2 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 E2 flashlight is a feature that produces a rapid and repetitive flashing of light. It is designed to create a disorienting or attention-grabbing effect. The E2 has an SOS signal mode. The SOS code consists of three short signals, followed by three long signals, and then three short signals again.


Battery1 x 18650 Li-Ion battery
Battery indicatoryes
Charger portmicroUSB
Thermal regulationyes

The power source of the E2 flashlight is 1 x 18650 Li-Ion battery, providing reliable and long-lasting energy for optimal performance. Having a battery indicator on a flashlight is beneficial as it allows users to monitor the battery status and make informed decisions regarding recharging or replacing the battery. It helps prevent unexpected power failures during critical situations and ensures that the flashlight is ready for use when needed.

The USB charger port on a flashlight can be particularly useful in emergency situations where access to power outlets may be limited. When the E2 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 contents18650 battery
microUSB cable
spare o-ring

By including a battery with the flashlight, you avoid the additional expense of purchasing a battery separately. The lanyard prevents accidental loss of the flashlight. 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 Klarus E2 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.

Klarus E2 (E2) comparisons

According to our statistics, the Klarus E2 flashlight was most often compared on our site with the following flashlights.

Klarus XT1C (XT1C) Klarus XT1C Klarus G35 (G35) Klarus G35 Klarus XT11S (XT11S) Klarus XT11S Klarus E2 (E2) Klarus E2 Klarus XT12GT (XT12GT) Klarus XT12GT Klarus G10 (G10) Klarus G10 Klarus G30 (G30) Klarus G30 Klarus FX10 (FX10) Klarus FX10

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