jhe888
Newly Enlightened
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- Nov 6, 2015
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- 37
In particular, I have a Fenix PD30. Can I use an 18650 in it? Thanks.
Can an 18650 substitute in any light that takes 2 CR123s?
- Thread starter jhe888
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Some flashlights can use without any problem, some may have lower performance, some may not even work.
18650 is wider than CR123 in diameter and may not fit in some flashlights.
ChrisGarrett
Flashlight Enthusiast
I use 18650s in my PD32 and they work just fine. I don't notice any output deficiency when doing so, compared to 2xCR123As.
Chris
Chris
sidecross
Flashlight Enthusiast
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- Jul 29, 2012
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"CR123A lithium batteries have a maximum discharge current specification of 1.5 amps (3.5 amps pulse)."
https://www.youtube.com/watch?v=9obbAKgeiLc&index=74&list=PL1t6JkcqG9NkaqDf0TxcfyBgSCxQExoTS
https://www.youtube.com/watch?v=9obbAKgeiLc&index=74&list=PL1t6JkcqG9NkaqDf0TxcfyBgSCxQExoTS
KeepingItLight
Flashlight Enthusiast
Anybody recognize the competitor's flashlight that draws 4.3 amps from CR123A?
Here is a direct link to it in the Elzetta video above.
ChrisGarrett
Flashlight Enthusiast
The now discontinued Fenix PD30 used an XP-G R5, which has a maximum current draw of 1.5A, so I would think that 2xCR123As would be within spec.
Now, whether the 18650 fits the tube, I can't say.
It does in my PD32, as I said above.
http://www.cree.com/LED-Components-and-Modules/Products/XLamp/Discrete-Directional/XLamp-XPG
Chris
Now, whether the 18650 fits the tube, I can't say.
It does in my PD32, as I said above.
http://www.cree.com/LED-Components-and-Modules/Products/XLamp/Discrete-Directional/XLamp-XPG
Chris
That's a negative advertisement against $urefire and maximum discharge current specification of 1.5 amps is if you want an hour of run time.
Primary CR123A are used in many $urefire HO incand bulbs such as P61, P91, MN16, MN21 and MN61 for more than decades without any problem.
Most of mentioned bulbs need or take over 2.3 Amps.
That is a $urefire P3X Fury.
4.3 Amps draw is at beginning of test then it drops down to about 1.5 Amps.
KeepingItLight
Flashlight Enthusiast
Thanks. At that current, I am not surprised it drops down so fast.
I have a datasheet for a Sanyo CR123A. It defines maximum pulse current to be that current which causes battery voltage to sag to 1.0 volts after 15 seconds. With that definition, Sanyo determined the maximum pulse current for its CR123A to be 3.0 amps. If Surefire tries to pull 4.3 amps out of that battery, it won't get it for very long!
Cause of that drop is nature of cold LED getting hot so quick. Also current regulation of driver.
It does the same thing using 2 IMR 18650 using 2x18650 Tube.
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