Panasonic Ncr21700t Datasheet !!top!! -

The 5,000 mAh rating is industry-leading for 21700 cells available to the public. At 0.2C (1,000 mA) discharge to 2.5V at 25°C, a fresh cell will deliver at least 5,000 mAh. However, at higher drain (e.g., 10A), expect capacity to drop to ~4,600–4,700 mAh due to internal resistance losses. The datasheet’s “minimum capacity” of 4,900 mAh ensures consistency across production batches.

Safety Note: Never fast-charge lithium-ion cells at sub-zero temperatures. Doing so causes metallic lithium plating on the anode, which can cause internal short circuits and permanent structural damage. 6. Key Applications

The Panasonic NCR21700T is a benchmark lithium-ion cell that, despite its elusive official documentation, has proven its performance in numerous critical applications. For engineers, it represents a known quantity with a high energy density and a strong track record. For hobbyists, it is a powerful and accessible component for DIY projects. panasonic ncr21700t datasheet

How does the Panasonic NCR21700T compare to alternatives? Here’s a quick reference table:

Low internal resistance keeps operating temperatures down and improves power delivery efficiency. Cycle Life Expectancy The 5,000 mAh rating is industry-leading for 21700

, hold the voltage constant. The current draw will begin to taper down naturally.

and voltage for a specific series/parallel (S/P) configuration. Cycle Life Expectancy

When integrating the NCR21700T into a pack, consider the following:

The 21700 designation refers directly to the mechanical dimensions of the cylindrical cell: Represents a diameter of 21 millimeters. 70: Represents a length of 70 millimeters. 0: Explains the standard cylindrical shape.

For engineers and advanced users requiring more detailed technical information:

| Feature | | NCR18650B (Legacy) | NCR21700A (Previous Gen) | | :--- | :--- | :--- | :--- | | Form Factor | 21700 | 18650 | 21700 | | Capacity | 4800 mAh | 3400 mAh | ~4000 - 4500 mAh | | Energy | ~17.3 Wh | ~12.2 Wh | ~15.8 Wh | | Advantage | Highest energy density in class | Mature technology | Good balance of power/energy |