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Klarus G20 Dual Switch Rechargeable Flashlight - CREE XHP70 N4 LED - 3000 Lumens - Includes 1 x 26650

Klarus G20 left side angle
Klarus G20 upright
Close up of LED on Klarus G20
Right side angle of Klarus G20
Close up of side switch on Klarus G20
Close up of charging port on Klarus G20
Klarus G20 in hand
Accessories for Klarus G20
Packaging for Klarus G20
Klarus G20 left side angle
Klarus G20 upright
Close up of LED on Klarus G20
Right side angle of Klarus G20
Close up of side switch on Klarus G20
Close up of charging port on Klarus G20
Klarus G20 in hand
Accessories for Klarus G20
Packaging for Klarus G20
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  • Compact, powerful flashlight with an easy to use design for everyday use
  • 3000 lumens of power that fits in any pocket
  • Dual switch design allows this light to be used casually or in tactical fashion
  • Rechargeable with an included battery, no need for replacements!
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Klarus G20 Dual Switch Flashlight

Potent Power, Compact Size

The Klarus G20 Dual Switch Flashlight is an impressive combination of power and practicality, all enclosed in a body no bigger than a can of soda. Less than 5 inches long and about half the width of your typical can of Coke, this compact light can easily fit in a bag for a convenient every day carry. Despite its small size, the G20 delivers power that would rival most larger high-performance lights, generating up to 3000 Lumens of brilliant illumination using its sophisticated CREE XHP70 N4 LED. In addition to its maximum output, the light comes with a trio of dimmer outputs ranging from 650 Lumens down to 15 Lumens, as well as a pair of tactical outputs, including a Strobe Function for disorienting a target and a S.O.S. Mode for signaling for aid in an emergency.

Convenient Design

While its potent output certainly stands out, its the G20's incredibly user-friendly design that truly sets it apart from its competitors. Powered by a single 26650 battery (included), this handheld illuminator features a special micro-USB charging port where it can be quickly charged without needing to removing the battery, saving its user time and eliminating any need to buy a charger. To make operation more convenient, the G20 comes with two switches, one on its tail cap and one on its side, both of which can be used to power the light on and off, as well as access all 6 outputs. The versatility of the dual switches allows the user to hold the light whichever way feels most comfortable and still easily operate the light. The Side Switch even doubles as a power indicator where you can monitor the battery's remaining charge so it'll never die unexpectedly.

Incredibly Durable

All of the G20's power and functionality would be useless without a strong, dependable body to ensure it can't be easily damaged. Crafted from sturdy aerospace-grade aluminum, the light's body comes with a hard-anodized finish that gives it incredible impact and water resistance, making it safe to use in just about any environment. The light's mineral glass lens is scratch-resistant and comes circled by a stainless steel bezel, protecting its powerful LED from any chance of damage. The G20 is even protected from harm internally, featuring an intelligent ITS temperature control system that helps prevent overheating from extended use.


  • Body made from aerospace-grade aluminum alloy with HA-III hard anodized finish
  • Hardened mineral glass lens is scratch-resistant and comes with anti-reflective coating
  • Specially designed textured reflector optimized for both spot and flood beams
  • Sophisticated Dual Switch Interface
    • Both Tail Switch and Side Switch can be used to power light on/off, adjust output
    • Pressing Tail Switch from OFF activates Low output
    • Pressing Side switch from OFF activates last output used
    • Temporary access to Turbo Mode by holding either switch, releasing to deactivate
    • Double click either switch to enter Strobe Mode, double click again to enter S.O.S. Mode
  • Lock-Out Mode prevents accidental activation of light
  • Internal fast charging by using included micro-USB charging cable
  • Battery Capacity Indicator on side switch displays remaining charge
  • Intelligent ITS temperature control system monitors internal temperature, adjusts output to prevent overheating
  • Reverse polarity protection prevents damage to both battery and flashlight
  • Included Accessories:
    • 1 x 5000 mAh 26650 Li-Ion Battery
    • 1 x Micro-USB Charging Cable (2.0A charging current)
    • 1 x Holster
    • 1 x Spare O-Ring
    • 1 x Lanyard


  • Power Source: 1 x 26650 (Included) (Do NOT use 18650, 16340, CR123A batteries with this light)
  • Working Voltage: 2.5V-5.0V
  • IPX Rating: IPX-8 (Waterproof and submersible up to 2 meters)
  • Impact Resistance: 1 meter
  • Brightness Outputs:
    • Turbo - 3000 Lumens - 45 Minutes
    • High - 650 Lumens - 4 Hours 30 Min.
    • Medium - 160 Lumens - 19 Hours
    • Low - 15 Lumens - 150 Hours
    • Strobe - 3000 Lumens - 1 Hour 30 Min.
    • S.O.S. - 160 Lumens - 51 Hours
  • Peak Beam Distance: 150 meters
  • Peak Beam Intensity: 5625 cd
  • Dimensions:
    • Length - 4.88" (124 mm)
    • Bezel Diameter - 1.41" (36 mm)
    • Body Diameter - 1.34" (34 mm)
  • Weight: 4.62 oz. (131 g) (excluding battery)
Runtime (Hours):0.754.519150-
Output Modes:3+ Brightness Levels, SOS, Strobe
Compatible Batteries:1 x 26650
Batteries Included:Yes
Included Accessories:Batteries, Holster, Lanyard, Spare O-ring(s), USB Cable
Flashlight Usage:Every Day Carry, Search
Throw Distance (Max):150m
Switch Location:Tail and Side Switches
Product Certifications:IPX-8
Warranty:Battery Junction 30-Day Warranty, Klarus 5 Year Warranty
Return Policy:Battery Junction Return Policy
Primary Material:Anodized Aluminum
Product Weight:4.62oz
Product Dimensions:4.88" (L) x 1.41" (Head Diameter)1.34" (Body Diameter)
Country of Origin:China
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41 Reviews
68% (28)
22% (9)
7% (3)
0% (0)
2% (1)
By Steve
Trumbull, CT
Covers all bases
October 21, 2016
This little beauty does it all. With a " used " battery I got 3 1/2 hrs. at the 650 lumen setting. Incredible. At the rate that I use the higher settings, I will only have to charge it a few times a year ! Walking the dog tonight I didn't need to use anything above the lowest output ; and the ground was wet from the recent rain and we all know how a wet ground can soak up lumens. I like that one switch goes right to low and that the other is the last output used or memory. The battery can be charged while still in the light and you can access turbo from either switch with just a minor delay. The lockout is also easy to use. If only it played music. If I were going to change anything it would be to give it the color of my Fenix PD40 and the beam just a smidge closer to my Klarus XT2C. But then again, with 3000 lumens on tap, who needs that kind of focus ?
  • Battery capacity, output levels well spaced, neutral color, two switches
  • Doesn't play music
By Tim
Winter Park, FL
Great Design
September 26, 2016
First of all, this is a very bright flashlight with great features. The side operation button is excellent with all the major functions available and is good if you like to hold the flashlight down. Due to it's smaller size it does get quite warm in turbo mode.

The beam is a very large spot with lots of spill. Not good for beam projection but really lights of the forest.
  • Bright
  • Small form factor
  • Useful side button
  • Good flood capabilities
  • Low light mode from rear switch
  • Lockout mode
  • Battery level indicator
  • Wide beam spread
  • Short use of turbo mode due to heat buildup
By TomZ
Southern, NJ
Blinding Brightness at a reasonable price
September 5, 2016
I told my wife to stop me if she ever saw me ordering any more flashlights from Battery Junction... I have a Nitecore MH10, an Olight S-1 Baton, and my trusty Teralux Lightstar 80, so I don't really need another flashlight.
Lucky for me though, she was asleep when I got the email about the Klarus G20... I snuck down the stairs and ordered that thing the same day. I didn't want to buy another light because I thought 1,000 Lumens of the MH10 was enough, and anyway.. where will it end? The price of entry for the super-throwers over 3000 lumens was just a bit too high once you add in the 3-4 18650's they use, as well as the charger... plus most of them are somewhat bigger...

But when this light was introduced with 3,000 lumens for under $100 with BUILT-IN CHARGING I was all done for.

Anyway, about the light... it's a lot heavier than my MH10, feels more substantial in the hand, and boy, does it get bright. It seems like I am holding a modern car high-beam headlight in my hand when I turn this thing on high. With the 1,000 lumen MH10 on, turning this on as well makes a drastic difference in the brightness level of what I'm trying to light up. It sure seems at least 3 times brighter, and the throw is a bit wider.

It operates differently than other lights I'm used to. Once on, a press-and-hold will shut this off, where the same action turns successively brighter modes on most other models. Not sure if this is a Klarus feature or not as this is my first by that brand. I've already gotten used to it though, it's just as logical as the other way of switching modes, just different. I also like the 'Strobe' mode... it's different than most... it flickers sort of randomly, I could see this throwing off a bad guy a bit more than the normal steady-frequency strobe light most others have.

I like the power level light built into the side button... green for mostly charged, yellow for down a bit, and red for near empty... nice touch. All this light is really missing is a moonlight mode, as the lowest setting is 15 lumens... kind of bright for a pitch black room, but not blinding. Really nothing bad to say about it though... It is super-bright and has decent run time with the large capacity included battery. It seems like all the brightness I'd ever need. I know I said that when I got my MH10... as my wife reminds me... but this thing really turns night into day... and it's just small enough to be pocket-portable. For what it can do, it's a real bargain; It was worth getting. I'm surprised they sell it for under $100.
  • -Bright light with good, even throw
  • -Heavy, feels good in hand
  • -Price is pretty low, you get a lot for your money
  • -Good recharge time with built-in charging
  • -Convenient to use, charge
  • -Enough brightness levels to satisfy pretty much everyone
  • -Could maybe use a 'Moonlight' mode or cut the 'low' setting brightness in half. It's just a smidge too bright for a dark room in my opinion.
By Gary W.
Klarus g20
August 26, 2016
What a light . Klarus g20 built solid ,lighting is so astonishing ,perfect throw & flood that lights up a whole acre like nothing else . Love the side button with color lighting to let you know what level battery is at . The two switch system is great for all purposes . USB charging is fairly fast , using the klarus g20 for all reasons for one full week before having to charging it ,that was so impressive ,again I love the klarus g20 .
  • Super bright , green ,amber, and red lights on button for battery level is great feature . Like the back switch for one press low lighting.built solid.love out mode is good option to and works great
  • Side switch presses really lightly so make sure you have it off. ( lock out when in pocket).
By Barry
Northern CA
Great in the beginning, then not so much.
March 16, 2021
I originally loved the G20 and it was my go to EDC. Then one day it decided to not work. Initially, It seems the lock out function has decided to block the use of the light, occasionally. Now, it doesn't light up at all. It has been delegated to the back up to the back up so it rarely see's the light of day. Too bad as I really like my other Klarus lights.

B -
2 Questions & 3 Answers
from Davie, Fl asked:
July 24, 2017
Lock Out? How do I enable/disable it? G20 comes on in holster continuously.
1 Answer
Lock-Out: Hold both Tail and Side Switches for 2 seconds to enter LockOut mode. To exit Lock-Out, click any switch 3 times rapidly. The flashlight will blink twice to signal Lock-Out mode entry and exit When in Lock-Out, pressing any switch will flash the Side Indicator Light 3 times to signal Lock-Out.
Submitted by: Customer Service on July 24, 2017

from fairfax asked:
November 13, 2016
Could this be used to charge other devices?
2 Answers
While the G20 can be used to charge a battery, it is not equipped with outgoing power and therefore cannot be used to charge other devices.
Submitted by: Customer Service on November 28, 2016
While the G20 can be used to charge a battery, it is not equipped with outgoing power and therefore cannot be used to charge other devices.
Submitted by: Customer Service on November 28, 2016

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