21700 Battery

Examples of a 21700 battery cell are the Reliance RS50, EVE 50PL, Ampace JP40, and the Tenpower 50XG

Physical Size: It has a standardized cylindrical dimension of 21mm in diameter and 70mm in length.

High Continuous Discharge Rating (CDR): "high drain" designation refers to its ability to sustain a significant current draw without overheating or damage. High-drain 21700 battery cells typically have a higher CDR than 18650 battery cells

Voltage: They have a typical nominal voltage of 3.6V or 3.7V

Capacity: The capacity generally ranges from 3000mAh to over 5000mAh, depending on whether the design prioritizes maximum capacity or maximum discharge rate.