The technical datasheet outlines the foundational boundaries of the NCR21700T. Understanding these absolute ratings ensures optimal performance and prevents premature cell degradation. Physical Dimensions 21700 (Cylindrical) Diameter: 21.1 mm (Maximum) Length: 70.4 mm (Maximum) Weight: Approximately 68.0 grams Electrical Capacity and Voltage Nominal Capacity: 4800 mAh (Typical) Minimum Capacity: 4700 mAh Nominal Voltage: 3.6V – 3.7V Charging Voltage: 4.20V ± 0.05V Discharge Cut-off Voltage: 2.5V Current and Discharge Ratings Standard Charge Current: 1.5A to 2.4A
4.8A (1.0C). High charge currents accelerate degradation. Discharge Profile
Retains roughly 70% to 80% of its original capacity after 300 to 500 full charge/discharge cycles. panasonic ncr21700t datasheet
1.5A to 2.4A (0.3C to 0.5C equivalent).
The Panasonic NCR21700T is a cylindrical lithium-ion battery cell with a nominal voltage of 3.7V and a capacity of 4800mAh. The "NCR" prefix denotes that the cell is a lithium nickel cobalt oxide (NCO) based battery, which offers a high energy density and long cycle life. High charge currents accelerate degradation
Offers better thermal stability and capacity retention than standard cobalt-only cells.
How does the NCR21700T compare to its predecessors and competitors? The Panasonic NCR21700T is a cylindrical lithium-ion battery
The Panasonic NCR21700T offers several benefits that make it an attractive choice for various applications:
These numbers confirm the NCR21700T as a cell. It is not a “high current” cell like the Samsung 40T (35A), but it excels in applications requiring long runtime with moderate power bursts.
The cell can sustain high-drain pulses provided the internal cell temperature does not exceed 60°C (140°F) .
Thanks to its balanced energy density and high discharge rate, the NCR21700T is widely utilized across several sectors.