Thanks. Been waiting for this! Using this battery chemistry, I’m pretty sure they could make a 3500mah 18650 with close to 30Q performance…or a 40S with 30T performance.
HKJ, thanks for all your hard work!
Thanks HKJ! These look really good.
A strong performer, i’m wondering if some kind of compromise to cycle life had to be made.
Thumbs up again…
these cells aren't available anywhere. Great specs but just unreachable
yeah, does anyone have a lead on when they will be available?
Thank you, HKJ 
now we just need some stock 
+100
So this is a rewrapped Samsung INR21700-50S, doesn't it?
20A continuous? Seriously? According to HKJ's graph, the cell overheats a bit before full discharge with cut-off at +50°C (this is equal to 75°C with 25°C ambient temperature). Typical maximum allowed cell temperature is 80°C, so… a bit tight, imho.
I see there's been an overall improvement in discharge performance, this is great as it means less heat or energy lost in the batteries as the current flows. However, how about energy density? They better get on it now that there's barely any oil to extract… O:)
Anybody know where to buy one of these cells? They seem to be the best battery that compromises between capacity and high discharge rate.
Nope, nowhere reliable.
Damn… any good alternatives worth considering?
If you need capacity, 50G, Molicel M50 or even sofirn’s 5000mA 21700s if you want cheap prices and decent performance seeing as how there’s a shortage of Samsung cells. 40T, Molicel P42A for higher drain. 30T for absolute max output with multi 50.2 fet lights
18650Canada has the 40T’s, but this T50 outperforms the 40T up to 15amps, which would suit majority of my lights…
Well I don’t see it being available in the next 3 months, maybe we’ll get lucky in 6 months or near the end of the year. There’s a major battery shortage going on right now. Check the typical American battery sellers. No stock of a lot of Samsung, LG, Sony cells.
Lets see if I can wait that long. Thanks for your input!
back in stock https://www.aliexpress.com/item/1005001587009631.html?spm=a2g0s.9042311.0.0.62bd4c4dV2FA0J
I noticed… Have they always been that expensive? Seems like a big premium to pay for the boost in performance over competitor batteries.