This is the new battery size that is slightly larger than 18650 cells. This cell is a high current cell with moderate capacity.
This battery can easily handle 30A and more with constant capacity and perfect tracking between the cells.
I did try a 50A discharge, but my battery holder melted before I was finished with the first trace.
The battery gets warm at 30A, but not too warm.
In this discharge the battery is in free air, i.e. it has better cooling.
Conclusion
This battery is a very good battery and the best high current cell I have tested to date. At lower current there is no reason to use this cell, only when the current is above 10A is this cell interesting.
Notes and links
The batteries was supplied by ENERDan for review.
My test stations is only equipped to handle up to 30A, this means higher current must be done on other equipment.
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.