Here is the Best All-Around cell made in the 21700 form factor size. With a minimum capacity of 4,000 mAh in capacity and a typical capacity of 4,200 mAh while having up to a 45 Amp Maximum Continuous Discharge Rating, gives this cell its place on top of the mountain. Although you may not get the best life cycle out of this cell if you always run it at 45 amps continuously, but the cell can definitely handle this demand without any issue. This cell hits the hardest for the longest, when seen on the discharge with capacity graph. This cell also has the amazing ability to give you very high capacity, while giving you an insanely high discharge/drain ability without making any compromise. This attribute makes it the best all-around cell in its 21700 form factor size.