I have tried them a few times and they are darn good. Always have been curious who the manufacturer is.
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Thank you for your support
I am vapcell Battery Engineer, responsible for product development. Vapcell company provides high-quality vapcell batteries and chargers all over the world, and acts as an agent to sell imported lithium batteries, such as Samsung, LG, Sony, Panasonic, molicel, etc 
ok, so under the Vapcell wrapper there is a Samsung, LG, Sony, Panasonic, molicel, battery?
Which vapcell battery do you use？
Yes, some of them are brand batteries
But there are also a lot of customized batteries
Vapcell has good batteries and use genuine cells with their wrappers. I have some of their 25A 3000mah ones and they perform nearly identically to Sony/MMurata vtc6.
Edit
Some of them will be tough to know. For the mainstream sizes, like 18650 and 21700, one can probably figure it out by comparing discharge curves to well-known models of similar ratings.
Other sizes tend to be made by smaller companies - this is also why we don’t get the same kind of performance/capacity per volume out of “uncommon” cells like 10440, 14500, 16340, 18350, 26650 that we do from 18650/21700. The companies with the most money and R&D behind their construction/chemistry seem to only produce the highest volume cell sizes.
What’s nice is that we have seen improvement from brands like Vapcell and Shockli cells in some of those sizes. The recent 14500 comes to mind (Vapcell , Shockli ). But we don’t know who the manufacturer of that cell is.
Vapcell Dennis is on this forum quite frequently. Pretty easy to see when it’s at the top
You can set up macros to alert you when a “X” or “Y” keyword is mentioned on “Z” forum. I’m sure many company reps use that or a similar method.
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OK, just struck me as odd…. looks like spam or a shill. Sorry and I apologize if it is on the up and up
According to Barkuti, Heter is the OEM of both the Vapcell H10 and the Shockli IMR14500 1050 mAh.
You’re not wrong to be wary of it these days. That sort of thing I think “guerrilla marketing” is the term for it? is very common.
Cool! Thanks for finding that.
And it goes back quite a ways…
See? Quite effective.
Very good batteries.
Yes, I posted a post on Samsung battery. I just saw this post and replied
Hi ，do U use vapcell 18650 3000mah 25A VTC6A rewarpped battery?
Thanks
Now Discontinued :weary:
We are looking forward to releasing a better 3000mAh 25A battery
Maybe next month 
Who specifically makes the Vapcell 18350 currently offered?
Probably Yongdeli New Energy Co., Ltd. in Shenzhen.
I am partial to Japanese products when it comes to electronics. What reputation does this place have?