Klarus ST-20 Flashlight (2xAA)

[Mistwalker]

The first Klarus light I got was the Klarus ST-20. I forgot I hadn't done a review on it...so I am doing one now.

Specs (copied from website)

•Emitter: Cree XP-G R5 LED with a lifespan of 50,000 hours
•4 lighting levels, 3 flashing modes
◦Lighting mode: 240 lumens (1.7hrs) - 13 lumens (53hrs) - 125 lumens (5hrs) - 2 lumens (200hrs)
◦Flashing modes: SOS - (125 Lumen, 14hrs) - Beacon (125 Lumens, 72hrs) - Variable frequency strobe (240 Lumens, 3.6hrs)
•Working Voltage: 1.8-3.2V
•Battery: 2pcs 1.5V AA (Alkaline, Ni-MH, Lithium)
•Switch:
◦Tactical tail switch for power on and off with momentary activation
◦Side switch for adjusting brightness output
◦Rotate the flashlight head to access hidden modes (Super Low, SOS, Beacon)
◦Strobe access: Press and hold the side switch for 0.5 seconds in any mode
•Lens: Toughened ultra-clear glass
•Material：Aircraft grade aluminum
•Dimensions: 158mm (Length) x 25.3mm (Head) x 20mm (Body)
•Net weight: 64g (Excluding battery)
•Waterproof to IPX-8 Standard
•Included accessories: holster, lanyard, body clip, two spare o-rings, and a rubber switch boot
•The above-mentioned parameters are approximate and may vary between flashlights, batteries and environments; Data was achieved using SANYO 2500mAh Ni-MH battery.





This one is a bit more practical for a vehicle kit, it's one that takes batteries I can buy at pretty much any store even any convenience store...AA batteries

Like the other Klarus I have it comes with replacement parts for the parts that get the most wear. It comes with a replacement switch boot and two spare O-rings. It has a lanyard with it like the NT-10 I have, but this one also comes with a pocket clip.

The light also comes with a pouch with both a belt loop for wearing on a belt and a d-ring that is handy for attaching it to a pack strap.

The rear switch has a protective crown to hep avoid accidental activation, but is also cut out for easy operation with a thumb.

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[Mistwalker]

I like how Klarus color codes the ends so that the threads aren't easily confused.

The lanyard is good for working in areas where you could lose the light.

But with it being water-proof to IPX-8 Standard I don't think a little water is going to hurt it any. In this shot it was in water about a foot deep.

And here about 2 feet.

In this one around 3 feet.

and in this one is the light on high shining up from around four feet deep, maybe a little over.

I also like the knurling for a positive grip, and as with the NT-10 the main switch is on the rear of the flash light, and the interface is on the side of the head

The operation of the light is pretty simple. The rear switch turns the light on and off. Lightly pressing gives you momentary activation while pushing till it clicks just turns it on. In standard mode the interface switch will give you low, medium, and high settings, by clicking and strobe function by holding it down. To access the 'hidden" features just loosen the head slightly and you access ultra low, and then the interface will work through the SOS function (where the light flashes S.O.S., three fast, three slow, and then three fast again) and a beacon function where the light will do a burst of light about every fifteen seconds. Here is a short video I did with it.

[youtube]BwW2U36-l7E[/youtube]

 

[texas gun person]

I had seen a Klarus advertisement on CandlePowerForums and have been wondering about them. Thanks for the review!

 

[Mistwalker]

I had seen a Klarus advertisement on CandlePowerForums and have been wondering about them. Thanks for the review!

Thanks glad you enjoyed the review. I have a NT-10 and a Mi-10 that I really like also. I've done reviews on both of those here too. I live in a really wet environment so I am particularly fond of their water resistance, and the NT-10 is an edc that gets used multiple times nightly by me and often by my wife and oldest daughter. Really liking the Klarus lights so far.

 

[Confederate]

I'm thinking about getting one of these, but most people review it with rechagable batteries or lithiums. I know AA alkalines are crummy batteries with limited shelf lives and apt to leak. But if alkalines are the only available batteries, how do they work in a light like this? Are the runtimes pathetic?

Seems like a nice light, but as an emergency light if it doesn't work well with alkalines, it's pretty much useless. Unlike CR123A lithiums, AA lithiums are expensive.

Has anyone used this light with alkalines?

Thanks!

BTW, Klarus lights are outstanding. They just replaced Olight as my favorite light, though Olights are also astoundingly good.