20700 is not a battery that easy to get. and the size will be much larger than present.
And I am worry about the over-hot hurt to the user and the battery risk is increase if the power is big enough.
in fact I have made some FET driver verison to one of our OEM customers.
I do not dare to write JAXMAN to a FET driver flashlight…I am worry about…
so I decide to sell host to you… you can diy it your self….
Good wishes
Yes, I do not want a FET driver in such a small light. It would get too hot, and it is dangerous for not us users.
Boosting the current to 2.8A, and adding a 1lm moonlight mode would make your light even better.
Or maybe just add a 1lm moonlight mode if it is possible and perhaps use new 4000k Samsung LH351Ds, that are more efficient than Nichia 219C 4000k.
Agreed. To feed a triple/quad with FET, currents can be uncontrollably high, which is not desirable for this host (with the current head size) - and also it would limit emitter selection regarding current / Vf characteristics.
Many new drivers have thermal management, if not then at minimum there is a short burst timeout to keep things from overheating. Makes for a very nice light…
I would buy a 21700 host, that would be great. Just make sure the head will fit a 20mm triple or quad board without sanding…
I think a larger version of E2L would be welcomed. I see it like this:
E2XL - 21700, quad carclo, 20mm driver
E2XXL - 26650, quad or triple noctigon (xp32 or new 4xp), 22mm driver
No.
18650 is perfect batteries,
but 20700 battery simply has 23% more capacity,
https://lygte-info.dk/review/batteries2012/Sanyo%20NCR20700B%204000mAh%20(Red)%20UK.html
https://eu.nkon.nl/review/product/list/id/2363/ .
For 21700 - up to +35% more capacity .
And sizes will be increased very slightly, for few mm.
driver ?
I wrote about host for new E2L, currently I use 2 E2L with LD-4 (linear) drivers .
If new host will have more space for driver, for example 20x7mm, we can install 20mm drivers, and very efficient DC-DC drivers too.
“E2XL - 21700, quad carclo, 20mm driver”
I think, it will be nice flashlight.
Currently 20700 and 21700 produced by 1st class manufacturers, such as Sanyo / Panasonic, Samsung, etc.
But 26650 produced only by 2nd-3rd class manufacturers .
how come u dont sell these on banggood ? thats the only place i buy my lights now. would like one but not from ali and the lame shipping options…
Banggood had made a copy of JAXMAN Z1 flashlight. The company who helped Banggood to copy Z1 is MANKER. And MANKER is only a dealer, MANKER found a fatory, to copy Z1 for Banggood. :rage:
So we cancelled all corporation with Banggood. They are a rubbish company, they even called the copy as a JAXMAN flashlight.
Banggdood have asked us to sell flashlights to them for a few times, but we refused. We would not like to make business with a thief. We dislike thire money, either. Ever, never.
Ok wut.
They actually copied your flashlight, and then sold it in your name?
Wow. That is rubbish AF as you said.
Yes, Banggood was our distributor at first. They sold our flashlights included Z1. When they buy the copy “Z1” from MANKER, they still sold copy as JAXMAN’s brand on their website.
And even worse, MANKER known JAXMAN products, and they made the copy at last. So, I think MANKER also is a rubbish company. They take money as the first important thing.
That is all.
I think I’m going to side with Jaxman on this. I have not had a single problem with Jaxman products, and I’ve had a few issues with Manker ones. I’ll pick Jaxman any day. The Jaxman Z1, and E2L lights are fantastic!
thank your support.
:+1: :+1: :+1:
I think, it’s right decision.
(I stopped buy in Banggood 2 years ago.)
And I’ve already put money away on MK34… But they won’t get them!
I have had bad experiences with Banggood and Gearbest regarding faulty of defective products. You as customer are thrown in the deep end…
Jaxman, please make a 21700 host triple or quad host! If you are worried about the heat, just add thin spring to limit current. It would be up to the user to bypass or replace the spring to increase current. So to modders it will be a favourite 
Ugh. Junkies are just the worst!
Jaxman, I hope you’ll continue to trust your instincts, while still seeking input from your various (potential) customers.
I personally don’t see any point in rushing for a triple tube light, from the perspective of either a consumer, or maker of flashlights.
As a consumer or a manufacturer, the advantage of the 18650 cell is that it is the most ubiquitous LiIon cell type, and with that comes a variety of specific models that strike different tradeoffs between energy density/capacity, power delivery, longevity, and price. It also means that for any combination of traits, the 18650 will generally be equal to or better than other form factors (ie, for a given price and power delivery, 18650 will have greater energy density).
As a consumer or manufacturer, the advantage of any 18650 flashlight is that it takes advantage of the 18650 ecosystem, and, as 18650 cells improve, lights already owned can reap many of the (incremental) benefits.
As a consumer, the advantage of an 18650 tube light is that it is the smallest, most portable form factor flashlight that uses 18650 cells. Indeed, it is small enough to fit into my pockets. It also offers the option of gaining a more compact, portable form factor by giving up some benefits of the 18650 by using an 18350 cell and shorty tube. A 14500 light can be more compact (my EDC is usually an AA/14500 light) still, but, to date, the cells lag 18650 and the best 18630s. A 16300 is, again, more compact, and again, the cells are less capable.
As a consumer, what advantages does a 21700 tube light have over an 18650 tube light? Slightly larger volume. What’s that slightly larger volume good for? Containing slightly more “guts” and therefore slightly better overall capacity and power deliver. It may offer some future-proofing IF 21700s end up being more popular and more advanced than 18650s in the future, but they aren’t now, may never be, and will probably be a long time before that changes. A 21700 tube light will probably be able to sink and dissipate heat somewhat faster than an 18650, but without doing the math, this seems like it will be a minor improvement.
And what do I give up in exchange? At best, 21700 cells are at parity with 18650s in terms of development, but their volumes are lower, and the range of applications, at present, are much smaller, so there is a smaller variety of cells to choose from.
Most importantly though, I think, I give up portability. A 21700 tube light is larger and less portable than an 18650 tube light.
So, as a manufactuer, why should I rush to release a 21700 tube light, rather than waiting to see how the market develops? Well, right now, there isn’t much/any competition, but that could change before one actually gets a light on the market. The size of the market, and its rate of growth is also uncertain. There are, as recent comments here show, some demand, but for the reasons I’ve given above, there is reason to think it may be slow to grow.
Now, as to drivers, I think your current focus on operating within manufacturer specified currents, managing thermals and providing regulated output is a good one, and shouldn’t be abandoned. Offering a hidden “turbo” mode ( whether within emitter specs, or overdriven) with a time out may be a reasonable addition. It doesn’t require an unregulated FET driver, though.
I think selling your hosts is a good way to accommodate the customers who aren’t satisfied with your stock offerings. For the remainder who aren’t willing or able to build their own light, well, they seem like a tiny segment of your market. They may expect you to accommodate their unique needs, but that doesn’t mean you should.
That’s my 2¢, anyway.
(Note, I was/am in favor of the 21700 update to the Sofirn C8F. In that case, the C8-sized head made compactness less of an issue. At the same time, the triple emitters and the substantial thermal path meant that the C8F was capable of high sustained outputs that made the capacity of 18650 cells seem inadequate. I might have preferred a 26650 update, but I think a 21700 was a reasonable choice and a better fit for the look & feel of the light.)