), some voltage sag will occur, causing the discharge curve to shift downward. Designers must account for this by configuring low-voltage cut-offs within the BMS to avoid premature system shutdowns under heavy load. Cycle Life Expectancy When cycled under standard conditions ( discharge down to ), the cell retains roughly
The chemistry of the NCR21700T allows it to maintain its capacity over many cycles, often cited for over 1000 cycles under appropriate charging/discharging conditions, making it a cost-effective choice for long-term investments. 3. Discharging Characteristics (Voltage Curve)
The voltage is held constant at 4.2V while the current naturally tapers down. Charging is considered complete when the current drops below a designated cutoff threshold (typically 50mA to 100mA). Discharge Capabilities
The voltage is held at 4.2V while the current tapers down. Charging stops when the current drops below the cut-off threshold (typically around 94 mA). Discharge Performance panasonic ncr21700t datasheet
. While many high-capacity cells struggle with high currents, this cell maintains a stable discharge curve even at 30A continuous
To assist you further with your battery pack project, tell me:
The Ultimate Guide to the Panasonic NCR21700T Li-ion Battery ), some voltage sag will occur, causing the
-20°C to 20°C (At roughly 40-50% State of Charge)
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
The unique balance of high current capability and high capacity makes this cell highly versatile. Discharge Capabilities The voltage is held at 4
The Panasonic NCR21700T datasheet provides detailed information on the cell's performance, characteristics, and safety features. Here are some key aspects to consider:
For procurement, these cells are typically available through authorized electronics distributors and specialized component suppliers. Ensuring the authenticity of the cells is vital for maintaining the safety and performance standards outlined in the datasheet.