well i would be getting osram, so i know that should be enough, but for sbt tho, i thought 20A is also enough right? stock of course, not modded. thats why i thought this would cover all k1 emitters.
20A should be enough, yes, but 30T's are the lowest resistance cells on the planet, so you will always get max amps on them on straight FET drivers and high performance LED's like the SBT90.2. I got 19 amps on a 40T on my K1 SBT90.2 when it was stock.
The T50 really should be the best cell for the K1 OSRAM's - should produce peak amps for the driver/LED combo for the longest time.
I'd buy 6-8 more if available, just for my own use, but I'd still like to see HKJ test results. He tests a pair, so at least we'd get some feeling of consistency.
hm…interesting, hank suggests 40t, i thought that was the best overall, cuz i would think his recommendation should cover all emitters, namely sbt
I agree - the 40T is the best available cell 
i bought some 50G for it, for osram, u think its good? cuz i saw 50E being recommended, and from what i saw in HJK test, 50G is just a slightly better version of 50E, right?
I wasn't aware of the 50G. Yes, looks superior to the 50E for sure. Limited availability.
Crap! I got so many obsolete 21700 batts now...
Where did u buy? I see stock on the Vapcell store here, dunno why they aren't flying off the shelves.
I'm gonna order 4 now before they go away. At 4, $7.50 each shipped, not bad.
ya thats where i got them, 2 pcs for 17 something, i dont need that many, only bought them in preparation for my k1 lol
@vapcell Dennis - Any idea on when the T50 might be in stock again?
Ok so can someone clarify something for this old fart?
When ordering on the AX store, there is an option for 1 piece button top or 2 piece button top. What is the difference? Does any of these come with a protection PCB?
I’m confused.
Yes, limited stock. Please go to aliexpress for purchase
Button top ，do not have PCB（Protection board）
If you need protection board, please contact express customer service to customize
On 11/11, I wanted to buy some batteries and ran into trouble. When I had everything together, I saw there was shipping on each battery added to the cost, inflating the price to something not very attractive. Sorry, I haven’t read all postings in this thread so don’t know if there was a solution. Did I do anything wrong? I’d like to use the next opportunity this month, probably buying not as many batteries as I got some meanwhile elsewhere, but still a few.
Hi Unheard
You can contact Ali-express customer service and tell her you are a BLF member
She can give you a better total fee
Because of the high freight rates in some remote countries, customer service personnel have added extra surcharges
Express platform can’t help customers save the freight of multiple products intelligently
Therefore, it is better to communicate manually
Thanks
Limited indeed! That you, I was able to purchase a pair.
Ok, thanks Dennis 
You could contact Vapcell Official via AliExpress to see if they can adjust the price. They might ask you to make an order without paying. They can adjust the price of the order rather than try to adjust the listing.
To make an unpaid order, I changed the payment method for my account from debit card to Paypal. I didn’t authorize AliExpress for automatic payments via Paypal so this step is manual. When I checkout and go to pay, the app redirects me to Paypal. I go back instead of paying. And the order goes into an “Unpaid” state.
Just trying to order a big amount of batteries incl. T50. I hope customer service can help me quickly to adjust shipping costs before T50 is sold out.
BTW: What kind of buttons do you use for button top 18650 batteries? I want to order 4x Molicel P26A and 4x Samsung 30QT, all with button top. I hope these buttons will not significantly increase internal resistance. I once bought some batteries elsewhere with joint-welded buttons and these became loose too easily and were of very bad quality.
Place an unpaid order and ask them to add/remove items and adjust price? I did this about 10 hours ago and customer service replied quickly.
Thanks for the great hint. I just did it as you suggested. But I ordered and paid a pair of the T50 separately ($ 1.04 additional for shipping) now. Seeing there are only 4 pairs left kind of made me nervous...haha. :-))
Only 3 left now