The datasheet clearly defines a safe operating temperature range of . Operating outside this range, especially in high temperatures, can lead to accelerated aging and potential safety risks. However, when used within its limits, the cell's chemistry demonstrates robust thermal stability.
The Panasonic NCR21700T represents a critical evolution in cylindrical lithium-ion battery technology, bridging the gap between high-capacity energy cells (like the NCR18650B) and ultra-high-drain power cells (like the Samsung 40T). While often overshadowed by its "G" variant (the Tesla-optimized 21700), the NCR21700T holds a distinct position for applications requiring a balanced current output with moderate thermal generation. This essay analyzes the datasheet characteristics that render the NCR21700T "hot"—not in the sense of thermal runaway, but as a high-performing, warm-running power source under sustained load.
At high discharge rates (e.g., 5C), internal temperatures can rapidly exceed 85°C to 94°C without active cooling. Charging Temperature:
By understanding the specifications, features, and applications of the Panasonic NCR21700T, engineers and manufacturers can unlock the full potential of this high-performance lithium-ion battery and drive innovation in various industries. As the demand for high-quality battery cells continues to grow, the Panasonic NCR21700T datasheet will remain a vital resource for those seeking to harness the power of lithium-ion battery technology.
When discharging at continuous loads approaching 15A to 20A or higher, the internal resistance (IR) of the cell generates significant heat.
The Panasonic NCR21700T is a 3.6V/3.7V nominal lithium-ion cell manufactured by Panasonic Corporation. It is designed to maximize energy density while maintaining adequate current output for demanding applications. Specification NCR21700T (or INR21700T) Capacity (Nominal) 4800mAh - 4850mAh Capacity (Minimum) 4700mAh - 4750mAh Guaranteed Nominal Voltage 3.6V / 3.7V Varies by manufacturer data Charging Voltage 4.20V ± 0.05V Max Discharge Current 10A - 15A (Constant) See thermal section for details Weight 21x70mm format
The Panasonic NCR21700T is a versatile battery cell that can be used in a wide range of applications, including: