Will the 21-70 Battery (a.k.a. 21700) Replace 18650?

That’s kinda my point… :smiley:

3750mAH for the 21s, 4200mAH for the 26es. Fairly little increase in capacity for a huge increase in volume. Or put the other way, a nice savings in size/weight, for only a small penalty hit as far as capacity.

26650s haven't seen the same level of development. After all, who makes 'em? The PLB 50/55As and similar cells are geared for big electric vehicles (buses and such).

The iJoy 26650 still gives out 4050+mAh at its max continuous rating, 30A.

What if we divide in half the 26650 ratings (≈18650 volume)? Underdeveloped cells. If A123 systems or any other get your sh1t right player would have invested in a good high current 26650 li-ion, things would be different, waay different.

Posted originally on Sat, 09/16/2017 - 19:06; little typo fixup.

Those are far from the best 26650s though…

The shockli ones are like 5600mAh+ and can do plenty of amps.

Mmmm, so they’re at least putting some effort into it.

I’m just wondering why, say, Panasonic wouldn’t apply the same tek to 26650s as they do to 18650s. Then we’d have 26es with assloads of capacity at modest current, or current hawgs at modest capacity. Either way, we’d win.

[quote=Lightbringer]

It basically depends on the number of customers and how many batteries they order. A “few” vapers do not really make a good excuse for updating the technology, the money are in electric cars.

We know the EV market is where the money is, hoping trickeldown or pioneering exploratory tests by the flashlight community with technical backgrounds.

But I never considered how deep the retarding impact that the military and their needs may play in development of new battery technology. For example, i have seen $40 single use lithium sulphur batteries online. The military has deep pockets, life or death needs, and could hog emerging companies’ resources, slowing adoption into needed consumer products. Likely, the public might get the scraps.

Example, keep eye on Sion Power’s Liceron tech.

If i don’t post again, I may be correct. Better to discredit me, as this might discourage North Korea from getting their hands on the next lithium air tech.

We know bike lighting is life or death, thus $1500 headlamps. $6000 search and rescue lights. Our credibility problem may be in our unwillingness to wipe out that next village. And so, the protected 18650b liion may stick around — despite our vaping battery-brothers suicidal path of addiction and subtle second hand genecidal tendencies.

I only know this as english because I recognize all the words.

Ditto!

I can explain why this went over your head:you aren’t affected every day by supply and demand, as I am. I seriously am amazed at how seemingly intelligent, successful people do not grasp the reality of supply and demand. If you don’t, the implication gies over your head. Anytime, anytime demand is raised without furiously pumping up supply, the price goes up. Supply cannot quickly go up for an emerging technology of the next generation safer (under gunfire) and higher energy dense batteries. I see two believable techs. Probably, the rest are hype. I also see incredible military applications, who probably will pay many fold more than the EV market, at least in the short term. This will keep the current tech alive a bit longer in the consumer field. So, imr 21700 will have time for a foothold before something 2x or 3x more energy dense emerges. Supply limited on new tech, military dollar demand is probably larger than one would imagine. Sion’s website already hints at this.

Oh noooo more 21700’s Fodder :person_facepalming:

Not very energy dense, but cheap. More “bang” for your buck. I wonder if knock offs at that mah.

Uhm… It’s 40 Amperes.
That’s a LOT of current.

Not looking for density, just the release of energy! Specially in triple and quads.

There are already a few tests out there of the 30T, they are very much my most anticipated cell at the moment.

HKJ (HKJ why do you put spaces in your URL!)

Mooch

Samsung INR21700-30T 3000mAh (Gray) test by HKJ

Huh, how did you get that link to work? Just kept giving me 404 in spite of the spaces being escaped with %20

Try http://tinyurl.com/ybeqt8da instead.

Yeah but Barkuti’s link works with no shortener, he must know something we don’t. :stuck_out_tongue:

Back on topic it would seem that the 21700 and 20700 size cell may replace the 18650 for high discharge applications, more and more companies seem to be getting on board and the cells that are coming out are pretty impressive. I still want to see Sony come out with a 21700 high discharge cell, so far they have been the leader in performance with the VTC5A so a 21700 sized cell with that tech would be quite a thing. Although maybe I’m just the crazy person who wants to build more and more extreme hand warmers that happen to also emit light and cells like the 48G will be more popular to make longer runtime lights.

He uses embedded HTML. Use quote on his post and you’ll see.

That’s what I did with tinyurl. The url is in plaintext, but is also the href value.

It’s called the “advanced post editor” in the options at the bottom.