question and opinion

wet11383

Newly Enlightened
Joined
May 14, 2011
Messages
4
I just bought, from goinggear.com, a Klarus NT20 XP-G R5 2 CR123 LED Flashlightand that's what I was wanting an opinion on. Is this a good light for the price? Is it dependable etc... I'll be using it for work primarily as a security officer at a casino. I wanted something with multiple power level so it can be used for checkng bags and ID's in the night club as well as spotlighting guests when needed from a distance. It also needed to be pretty bright as the club is dark with multi colored lights and such typical of a dance club that need overpowered by my light to identify individuals and things like that. I will also be taking it to the field with me with the Army as I'm in the national guard so it needed to be sturdy and waterproof too. I found this light met my criteria and was about the brightest in the price range, wanted to spend around $50 or so and I also emailed goinggear.com and ended up getting a 10% discount code from them.

After I was pretty decided on this light I also asked goinggear about their opinion on what batteries to use with the light. What they reccommended matched reviews and comparisons I found around the internet so I bought 6 Surefire SF123A CR123 Batteries from them also, so I would get the 10% off on them also.

My question comes from the batteries, I had asked them also about using rechargable and was told this light cannot use them. So I looked on the internet and found many pages that listed lights that could and could not use rechargables. So I wanted to know what makes a light unable to use rechargable batteries?! I thought a battery was a battery, with reguards to output, just so long as the battery was the right size basically?! I didn't know rechargables were different in any way as far as output that would make them only usable in some applications?! So anyone have a good explanation as to why this is like this?

Sorry so long of a post! Thanks in advance for any help anyone can provide!!
 

Norm

Retired Administrator
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Jun 13, 2006
Messages
9,512
Location
Australia
Klarus NT20 (2xCR123/RCR, XP-G R5) Review: RUNTIMES, BEAMSHOTS, PICS, and more!
You might find selfbuilts comprehensive review helpful.

From the above review.
One point – the body tube is fairly narrow on the NT20. I found most protected RCRs (16340) and CR123A fit well, but with absolutely no extra wiggle room. None of my protected 17670 or 18650 cells would fit, so I had to use the much lower capacity 14670 for the 1x 3.7V Li-ion tests below. Something to keep in mind if you want to use rechargeables in this light.

Norm
 
Last edited:

Z-Tab

Enlightened
Joined
Mar 10, 2011
Messages
694
Location
Los Angeles
Rechargeable lithium batteries have a significantly higher operating voltage than primaries. If the driver is not designed to handle the increased voltage, you will burn it out and destroy your flashlight.
 

Norm

Retired Administrator
Joined
Jun 13, 2006
Messages
9,512
Location
Australia
If the driver is not designed to handle the increased voltage, you will burn it out and destroy your flashlight.

The Working Voltage: 3.0-8.4V so two Li-ion batteries should be OK.

Norm
 
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