Comparing it at 20A and 30A to its high current 3Ah 18650 peers like the Sony VTC6 and the Samsung INR18650-30Q, the big advantage seems to be much cooler operational temperatures. I don’t think any of the 18650 cells can be safely used at over 18A-19A in continuous use. Looks like the INR 21700 can be safely used at 25A for continuous use. The e-cig guys will be loving this 21700 cell.
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.
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.