Klarus G10 (2018) review

1800 lm output
15600 cd intensity
1 x 18650 Li-Ion battery

The Klarus G10 (G10) released in 2018. It uses Cree XHP35 HD LED, OP reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 1800 lm output, 15600 cd intensity, and a beam distance of 250 m.

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 G10 flashlight is rechargeable easily via USB port.

Table of contents:

Klarus G10 (G10) specifications

Rated 3/5 based on 1027 user votes.


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

Weight80.2 g
Length120.1 mm
Body diameter24.5 mm
Head diameter25.6 mm
Materialaluminium alloy with HAIII hard-anodized finish


The emitter of G10 manufactured by Cree, a US-based LED manufacturing company. The G10 has an orange peel (OP) textured reflector. Orange peel reflectors have smoother beams. It has an AR coated lens.

EmitterCree XHP35 HD LED
Color temperature6000 K
Lenstoughtened AR coated glass
Switchelectronic side, mechanical 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.

Flux1800 lm
Intensity15600 cd
Throw250 m
CD/LM factor8.67


The G10 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 G10 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 G10. The package includes a holster to safely store your flashlight. The lanyard prevents accidental loss of the flashlight.

Package contents18650 battery
microUSB cable
nylon holster
spare o-ring

The performance of the Klarus G10 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 G10, then don’t hesite and signal the problem to us.

Klarus G10 (G10) pictures

Klarus G10 / G10 photo Klarus G10 / G10 photo Klarus G10 / G10 photo Klarus G10 / G10 photo Klarus G10 / G10 photo
Klarus G10 / G10

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