Klarus E2 (2020) review

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.

It uses a TIR lens to form the beam pattern. This light has 4 modes of lighting. The memory function is a nice feature, the light will remember the last used mode. It has a strobe function, which is one of the most effective self defense tools available. The E2 flashlight is rechargeable easily via USB port.

Table of contents:

Klarus E2 (E2) specifications

Rated 3/5 based on 1037 user votes.


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

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


The emitter of E2 manufactured by Cree, a US-based LED manufacturing company. 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.

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

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


The E2 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. The E2 is tactical strobe ready. The strobe light is disorienting to the person it is aimed at which makes it difficult for them to concentrate. It has the SOS beacon function for an emergency situation. The SOS flashes Morse code so you can signal for help when needed.

Modes4 modes
Mode memoryyes
Ramping modeno


The battery indicator lets you know when the battery is low, charging, or fully charged. This flashlight can charge the battery with an integrated charger, and it works with any USB power source. 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 18650 Li-Ion battery
Battery indicatoryes
Charger portmicroUSB
Thermal regulationyes


It comes with a battery. The battery must be fully charged before you first use your E2. The lanyard prevents accidental loss of the flashlight.

Package contents18650 battery
microUSB cable
spare o-ring

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.

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

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

Klarus E2 (E2) comparisons

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

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