It can be used at safely at 35A as long as it have free air around it (A metal holder can be very close to free air) (It did not get too hot in my 40A test). That is the reason I call it the best high current cell I have seen.
I did not know if you meant “best” high current cell compared to only 18650, or to any cell - so I looked up Liitokala INR26650-50A and the 30T performs much better at high current. Very impressive.
Very impressive indeed. If the next generation includes higher capacity, sort of like the change from the 25r to the 30q, they will be really amazing.
I hate it, it means I have to do some extra work.
A new battery holder looks like this:
But I change the connecting wires and this means when it looks like this I have work to do:
WOW this 30T is one serious battery, thank you for testing and um…
Sacrificing!! 
Nice cell. That’s an interesting battery holder. Did you buy it or make it? Any links if you bought it please?
Samsung 30T’s motto: “HKJ’s equipment can’t handle my power.”
How’s that for advertising?
Probably the best e-bike cell it seems. Unless you have an underpowered EU-compliant motor.
Incredible! I want one!! Or 20! Excellent job once again HKJ!!
Samsung introduced their 21700 e-bike battery in 2016: 4750mAh and 9A max discharge.
Wow, 4750 and 9A. That does seem like an ideal e-bike cell - lots of capacity and just enough current. What size / form factor?
Cylindrical, 21mm diameter and 70.0mm hight. In case that was the question.
Where in the world can I order these cells? I’ve been using the Sanyo 20700B, but I really want to get my hands on those. Any info or links would be greatly appreciated.
Welcome to the club Enveck! Perhaps alibaba? I don’t know about shipping and stuff, I just googled this. https://www.alibaba.com/product-detail/Sam-sung-3000mah-40A-3-7V_60668687455.html
Cheers!
Mooch tested and is using the 30T, just asked him where he got the cells. 
Thanks, all I’ve found so far is Alibaba…. I guess they haven’t hit state side just yet. Working on getting an order thru Alibaba right now.
if the resistance that made all that heat were eliminated the test could be more accurate.
btw i rebuilt some versapak sticks with the 30t and they have a slight edge torque wise over the 25r.
Yeah, Samsung INR21700-48G, supporting maximum discharging current at 9.6A, maximum pulse discharge current at 35A for 10 Seconds, 25A for 30 Seconds, and 18A for 60 Seconds. The nominal voltage is 3.6V, charging voltage is 4.2V. We are working on a new e-bike battery pack with just this Li-ion 21700, will come back here once there is any update. 
From the same company ….
Enerdan ….