The BladeForums.com 2024 Traditional Knife is ready to order! See this thread for details:
https://www.bladeforums.com/threads/bladeforums-2024-traditional-knife.2003187/
Price is $300 $250 ea (shipped within CONUS). If you live outside the US, I will contact you after your order for extra shipping charges.
Order here: https://www.bladeforums.com/help/2024-traditional/ - Order as many as you like, we have plenty.
OK, as I probably revealed by my above stuff, Im a flashlight dummy. You guys did get me to buy the AAA copper Maratac. Initially it seemed a little lacking (as in not much for the $) but walking down the block after dark with it and my P2X Fury and shining these lights up in to dark alleyways and in my unlighted garage.... well I began to see the light. Plus the copper is cool.
But Triple T help please. Would you also be advising not to run the 2 x123 battery option in those Olight S2-U Batons and stick with the with the 1 x 18650? Is this AW protection you describe something that comes there? Or might you be with Thurin, and advising that the Olight S-1 with 1 x 123A may be the way to go??
In most CR123 lights that take 2, 17670 will be a closer fit. 18650 is close in height but not in width. So, if the light barrel is wide enough to take an 18650, it would certainly be a safer option. It would be safer for two reasons:
1. The presence of 1 lion battery instead of 2 prevents the reverse charge scenario
2. Actually cr123a is still lithium metal instead of lithium ion, so they are inherently more unstable due to chemical properties
That said, a single cr123a of US manufacture with protection circuits are a pretty good bet. Like the ones from Surefire. But you still wouldn't want to double them up.
So when you have the 2X123A option, either a single 17670 or a single 18650 should be comparable. The AW indication is a branded modification that a company puts on these batteries which is an additional circuit that adds safety features, but it also adds micrometers of width.
So an AW 17670 and an AW 18650 are the safest you are going to get in this class of battery, but a 17670 or 18650 without the AW modification is certainly a much better option than stacking CR123's of any variety.
The light doesn't know the difference. The issues are fit and voltage. If the battery fits and it is within the same operational voltage range then you are good to go.
What i would do is download the manual for the light you want to purchase or own, and see what the voltage range is for the functions of the light. If the battery you wish to replace is also within that voltage range, then it will be comparable electrically. The fit will vary. I only have experience personally doing this with 3 lights from 4 sevens. In the lights I have worked with, unless the light was specifically branded for 18650, that battery was too wide to accommodate the barrel. The 17670 even with an AW circuit was compatible.
Theres 2 x 123A Surefire Lithiums in there! So this is a bad thing and I need to replace with 17670 or 18650, based on dimensions or whatever Surefire recommends?
It depends on your risk tolerance. For me, any possibility of catastrophic failure that is easily avoidable should be avoided. Lord knows things break all by themselves, I don't need an explosion in my pocket or around my kids. If it were me, I would put a single battery in it. However, plenty of folks don't explode. We could talk about personal risk engineering... Philosophy aside, Which light do you have?
Hey Tom,
Don't take my advice of the S1 as coming from a 2 battery vs 1 battery thing. That was in relation to him looking for something smaller than a 2xCR123A light. The S2 would be similar in size to the one that's too big for his needs.
That being said, I'd recommend a 18650 over 2xCR123A because it'll last longer and is rechargeable. You can get RCR123A but some lights will not support them.
Tom, you owe us a pocket dump pic now![]()