The datasheet specifies a Constant Current / Constant Voltage (CC/CV) charging protocol.
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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 panasonic ncr21700t datasheet hot
The is currently one of the most talked-about lithium-ion cells in the DIY battery building, electric vehicle (EV), and high-drain electronics communities . While standard 21700 battery cells have largely eclipsed the older 18650 form factor due to their massive 42% capacity increase , the NCR21700T variant has sparked intense demand—and confusion—online.
), expect faster degradation, but the cell is designed with high safety standards and reliable long-term performance. The datasheet specifies a Constant Current / Constant
The Panasonic NCR21700T is more than just a battery; it's a proven, high-performance power source that has earned its place in some of the most demanding electronics on the planet. Its combination of high capacity, robust current handling, and wide thermal operating range makes it an exceptional choice for builders, enthusiasts, and engineers alike.
The following data highlights the primary performance metrics typical for the NCR21700 series : Approximately 4800mAh to 5000mAh . I need to provide a comprehensive article covering
Based on the datasheet, the NCR21700T is ideal for:
According to performance tests, high-drain usage (like 15A-20A constant) will cause the cell temperature to rise rapidly, often exceeding 60°C to 70°C without active cooling.