The pair of T50's arrived today! They look worthy, I'll see how they stack up against the rest.
hey dennis, do you guys do customized orders?
OK, the T50's are for real. They will replace my 40T's. They tested at start in the neighborhood of 40T's. Measured 24 amps on a slightly modded K1 SBT90.2, and 17.5 amps on a FT03 XHP50.2 with spring bypasses (GOLISI at 16.3 amps). Tested on a FT03 SST-40 at 9.35 amps, where the 40T tested 9.4 amps, and the 30T at 9.5 amps.
Nice! 
Did you use a clamp meter to check? Would the T50 heat up quickly @ 24 A?
i mean i heard this before, and i do believe it exists, but i just didnt think i would witness it first hand, so blatantly too…
11.11 is such a scam, im sure its true for many stores, but at least for the vapcell store on AE, i know first hand it is, some stores may increase price beforehand, but they didnt. instead, they increased the shipping. i was just looking at this listing earlier today, the shipping was $1 something, i dont have a screenshot to prove it, but i remember it because i was thinking to myself, “that is really cheap shipping for batteries, damn.”, and i was gonna get it tomorrow when the sale starts. but now, with a little over 2 hours in the countdown, they increased the shipping by like 6 bucks to cancel out the sale of $5 something, i dont even know what to say anymore…im just speechless.
Can you change the shipping method to a free one?
When I search for Vapcell S4, I end up with 7 results. Each one has Free Shipping to Australia.
Even the one with the battery? I just asked the rep, his answer is, oh because shipping to canada is expensive now, so i just changed it…like really?? Do i look dumb?
Seller’s Shipping is AU$1.47 for a Vapcell S30
It was AU$1.53 a few months ago. I guess the Australian dollar is better now and the price has dropped slightly to AU$1.47.
It might just be Canada…
Ask him something about it, show ur interest, and see if he changes the shipping for u too lol
I asked him if he can mix and match batteries for me, instead of 4x30Q at 59 usd or 4x40T at 63 usd, i wanted 2x30Q and 2x40T, and i was expecting a price in between, but not only did he change shipping cost, he tells me that would be 87 usd. So…ya forget it, not gonna buy from vapcell store again, so shady
Tempted to get the T50 even though I don’t have any 21700 flashlights… out-of-stock 
I think I ended up paying more trying to do a custom order via chat on AE when I bought 4x 14500 H10’s. It would’ve been slightly cheaper if I got them during a flash sale on Alibaba a week later. Then again, I won 2x S30 during a livestream GAW on FB and that was included in the order. 
Vapcell were doing a buy 6, get one or two cells free promo a month or so ago.
Thats an easy problem to solve, k1
Yes, clamp, with tailcap removed. It's not like it would be left for minutes on running at that power level, so I'm not concerned. On max/turbo, these kind of lights simply can't handle much beyond 30 secs. The light will be much hotter than the cell.
Is the Vapcell T50 5000mAh 21700 in the Vapcell AliExpress Store? I can’t seem to find it there…
Not look'n good, this is where I ordered mine from in their store: https://www.aliexpress.com/item/1005001587009631.html?spm=a2g0s.9042311.0.0.54f64c4dOwRmSF
damn 5000mah AND 20A discharge? and its a 21700? this is PERFECT for k1, did anybody test it yet
edit: never mind, i just went back to read the last page
This is a definite jump up in batts. Like the 30Q, VTC6, LK 5000, GOLISI, or even 30T/40T's - game changer, for the time being at least.
Now, can we buy them? 
Dennis - I like where Vapcell is goin as of late. The tech, testing, etc. Just got to work on price and availability.
Couple pics of this rare cell, yes they do exist! I like charging slightly over 1/2C, so charged these at 2.8 amps, as shown:
Thanks for the link. I did ask Vapcell AliExpress and they mentioned it’s out of stock, not sure when will restock.
Was hoping to grab a few during the 11.11 sale.
Also, kudos to Vapcell for now having some shipping option for batteries (there is some shipping fees, but at least there is a shipping option now to my country — whereas before, Vapcell AliExpress “does not deliver” to my country. Although I notice, some batteries in the Vapcell store will still indicate “no shipping method” to my country… I ordered some Vapcell H10 14500, hopefully the order will not get cancelled, or ask me to pay “additional” fee for shipping to my country…
could this be the best battery for k1 yet
Depends which K1. The K1 SBT90.2 is wayyy different from the OSRAM's. The K1 SBT90.2 will do best on a 30T for max output, but not last long. I think it's a good choice though for the SBT90.2 because of it's decent high performance and longer runtime.
For the OSRAM's, It's a good choice for sure. I would think it should keep a higher level of output longer. Won't make a difference in the first couple of minutes on a freshly charged battery, but in theory, should produce higher amps during the course of draining the cell.
So it all depends on your usage scenario, what you want, and what version K1 you have.
I think it's the best all around 21700 cell on the market today, well, if it was on the market that is...
Maybe Dennis can tell use if it's the Samsung 50T or not -- would be nice to know. The 50T isn't available anywhere also it seems.
These things of rewraps can get confusing, like made in the same factory but not Samsung branded, etc. Might be quality/rejection differences on the final product, etc.
Ohh, also depends if it's a modded K1 SBT90.2 or not. If you added spring bypasses and replaced LED wires with thicker ones, you could get over 20 amps. Probably with the stock K1 SBT90.2 it would stay under 20 amps. My modded K1 measured 24 amps on the fully charged T50, but of course that drops fairly quickly.