This is an absolutely exceptional 21700 cell that manages to put out 4200mAh with a 45A maximum current. This makes it the best balanced high drain/high capacity 21700 out there.

Specs:

• Size: 21700
• Approximate Diameter: 21.4 mm +/- 0.15mm
• Approximate Length: 70mm +/- 0.15mm
• Brand: Molicel/NPE
• Manufacturer Rated Capacity: 4200mAh
• Manufacturer Rated Standard Discharge Capacity: 4100mAh (Minimum)
• Manufacturer Rated Max Discharge Current: 45A
• Nominal Voltage: 3.6V
• Peak Voltage: 4.2V