No need to drill and tap. That clip is bolt on and it comes with little bolts. You use the pre drilled holes for the lanyard.Oh it's a custom. Ok ya I would need to drill and tap the tail cap
No need to drill and tap. That clip is bolt on and it comes with little bolts. You use the pre drilled holes for the lanyard.Oh it's a custom. Ok ya I would need to drill and tap the tail cap
@Jean-Luc Descarte ,The S21A is not that much bigger, definitely still pocketable (for me they both fit snugly inside the jeans' coin pocket),
Yes it is. Any 7135 based driver can run on 2 cr123a. It's not the most efficient, but it'll run fine. As long as you're not pushing output as cr123s don't care for going over 2.5a very muchThat Convoy S2+ you just bought is not 2xCR123 compatible.
I was sure that I read on the Convoy site years ago that the S2+ was not compatible with 2 CR123 batteries. Perhaps they stated that it is not compatible with 2 RCR123 cells?Yes it is. Any 7135 based driver can run on 2 cr123a. It's not the most efficient, but it'll run fine. As long as you're not pushing output as cr123s don't care for going over 2.5a very much
Not that crazy. My Nitecore MH12S has found its way to my front pants pocket. Not my first 21700 light I've clip-carried. Likely not the last one either.I also agree that 21700s are awesome. I only have one light with them, and I love it. I think I will stick with that format going forward, at least for the most part. I like the increased runtimes and the way the light feels in my hand better than the 18650 lights.
It might also seem crazy, but I EDC my 21700 light pocket-clipped into my front pocket. It indeed is pretty large, but I personally like to have all that power with me whenever I need it. This is the Fenix TK22 TAC by the way.
For my hands, I prefer a flashlight that uses a single 26650 cell. Not to heavy, fits my hands well, and has better capacity than 18650. While a 18650 based flashlight is to small for my preference.Hi.
1st off, I am totally into 1*18650,
and like the lights' size format the most.
+ think to be better off with an additional spare cell in regard to a bigger light with larger cell
+ the larger cells I had so far - 26500 and 26650 - simply were on the lowest end of quality.
.
So, question:
for that one additional "bigger" light,
for "thinking into the future"
what cell might be best to plan?
21700
26650
32650
even a different one to these 3 ?
Endurance is supposedly upwards of 3,000 cycles. I'm guessing self-discharge is on par with lithium cells as the basic chemistry/construction is very similar, other than the substitution of sodium for lithium.Sodium-ion, eh? First I've heard of 'em. More familiar with sodium-iodine. I will definitely be listening for more... I do like me some salt.
How's their cycle endurance and self-discharge?
Unfortunately it has a very steep discharge curve (from ~4.0V down to 1.5 to 2.0V). Average voltage is 3.1V, very similar to the average voltage of LFP. It should be capable of high amps. So basically all the good characteristics of LFP, except for the flat discharge curve, but eventually at a much lower price ( <$30/kW-hr ), plus the potential to reach energy densities greater than LFP. Right now CATL is making sodium-ion cells around 160 Wh/kg. This is about the same as their LFP. They're going to 200 Wh/kg next year, with 230 in the pipeline. Currently the best standard li-ion chemistries are around 270. I think it's great we're already matching LFP with the first cells out the door.3,000 cycles is more than Li-Fe if I'm not mistaken, very impressive if true. If it's also got a flat discharge curve and can handle high amps like Li-Fe, that'd be the cherry on top. That'd pretty much make it the NiMH of 3.7v secondary chemistries.
It's almost a given that you need a regulator of sorts for most cell chemistries. For one-cell sodium-ion lights you would need a buck-boost regulator, so it's probably not ideal. Two cells and over, a buck regulator can easily deal with the voltage range.Time will tell, I suppose. Steep discharge doesn't bode well in my eyes. I remember the days when the most you'd get out of your batteries in a flashlight was, what... a quarter, maybe a half of their capacity? At which point the light had gone dim enough to warrant a fresh set, even though you still technically had a good amount of juice left. If I'm not mistaken, most emitters still operate at lower brightness when driven at lower voltage. I know the Malkoffs do. Not very much I suppose, but it's there. Dropping down to half, maybe even less than half of nominal voltage, and starting about a full volt above nominal to boot, seems rough to me. But I guess we'll see how it goes soon enough.
That's driver choice for the malkoff. And what you're talking about is alkaline batteries in incandescent lights. They alway sucked. Regular lithium ion cells have a pretty steep discharge curve, and they're great for modern incandescent lights. Not as good as lifepo4, but not many bulbs work with the voltages of lifepo4 chemistry.Time will tell, I suppose. Steep discharge doesn't bode well in my eyes. I remember the days when the most you'd get out of your batteries in a flashlight was, what... a quarter, maybe a half of their capacity? At which point the light had gone dim enough to warrant a fresh set, even though you still technically had a good amount of juice left. If I'm not mistaken, most emitters still operate at lower brightness when driven at lower voltage. I know the Malkoffs do. Not very much I suppose, but it's there. Dropping down to half, maybe even less than half of nominal voltage, and starting about a full volt above nominal to boot, seems rough to me. But I guess we'll see how it goes soon enough.