Are any one cell lights regulated?

ptolemy

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Feb 21, 2007
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I am particularly interested to know if nitecore sr3 is regulated at the light level, so when I find the 18650 adapter, i can run it off panasonic cell.

If not, are there others that are definately regulated? I am looking for the light which multiple modes out of put, that was 1 18650, and is fully regulated to maybe 2.7v or perhaps even as high at 3.6v (probably unreasonable?)

oh, i am not looking for turbo head type lights, so as thin as possible :)

thanks! :)
 
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AlexLED

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Every decent light is regulated. :) Thus, most discussed in CPF are. ;)

Exceptions are direct-driven very high power lights and very cheap lights.

However, your concerns are correct: if there is no regulator circuit in the light, you should not raise the voltage. But, pay attention not to exceed the max voltage of the regulator circuit.

So, pick up about any 18650 light you'll find here, if you need any details, let us know.
:)
 

Moonshadow

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I am looking for the light which multiple modes out of put, that was 1 18650, and is fully regulated to maybe 2.7v or perhaps even as high at 3.6v (probably unreasonable?)

:eek: If you are using an 18650, you shouldn't be allowing it to discharge below 3.6 v in normal use. And if you run a lithium-ion to 3.2 V or less you will damage the cell and possibly risk serious injury.

I'd suggest a trip to the Batteries forum:

http://www.candlepowerforums.com/vb/forumdisplay.php?f=9
 

ptolemy

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:eek: If you are using an 18650, you shouldn't be allowing it to discharge below 3.6 v in normal use. And if you run a lithium-ion to 3.2 V or less you will damage the cell and possibly risk serious injury.

I'd suggest a trip to the Batteries forum:

http://www.candlepowerforums.com/vb/forumdisplay.php?f=9


I been there:), Hence I am asking...

If there light is just 18650, what is the point regulating is for say, 3v-4.2v...instead of 3.6v-4.2v?:)

just a thought
 

dirobesh

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:eek: If you are using an 18650, you shouldn't be allowing it to discharge below 3.6 v in normal use. And if you run a lithium-ion to 3.2 V or less you will damage the cell and possibly risk serious injury.

I'd suggest a trip to the Batteries forum:

http://www.candlepowerforums.com/vb/forumdisplay.php?f=9

Protected 18650 batteries cut off at approx. 2.7 - 2.75 v to protect the battery - running below 3.6 v is fine.

A lot of the "decent" torches don't have full regulation in 1x18650 configuration, including fenix and jetbeam models to mention just 2.
 
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AlexLED

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A lot of the "decent" torches don't have full regulation in 1x18650 configuration, including fenix and jetbeam models to mention just 2.

Uhm, ok, driving a LED from a single 3,6v battery is not easy, because the LED needs a similar voltage. Such lights usually have just a buck circuit, so if Vbatt is less than Vled + 0.2 volts, regulation decreases.

Still, Jetbeam JETBeam JET-III Pro ST maintains almost perfect regulation:

runtime_high.gif


(c) http://www.light-reviews.com


But to get back to the NiteCore SR3, this light is regulated as well, although it does have a hard time to deliver full output from a single CR123:
runtime_8_new.gif


(c) http://www.light-reviews.com

Using a 18650 is beneficial in this case.
 
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