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.
The cell offers a volumetric energy density of approximately 775 Wh/l , making it one of the most efficient 21700 cells for space-constrained designs. panasonic ncr21700t datasheet
German battery forum discussions note that while the cell can theoretically handle 30 A discharge currents, the usable energy drops significantly when discharged at higher rates, particularly if the cut‑off voltage is set above 3.0 V. In other words, the cell is high‑capacity but not truly high‑power; pushing it beyond its rated continuous current will result in diminished performance and potentially reduced service life. The 5,000 mAh rating is industry-leading for 21700
The is a high-performance, cylindrical lithium-ion cell designed for applications requiring a balance of extreme energy density and high discharge capabilities. Often cited as a "Tesla-grade" cell, it is a staple in high-drain power tools, electric bikes, and custom battery packs. Core Technical Specifications In other words, the cell is high‑capacity but
The NCR21700T is a cylindrical lithium-ion cell utilizing the 21700 form factor (21 mm diameter, 70 mm length). Developed by Panasonic, a pioneer in battery technology, this cell features a Nickel Cobalt Aluminium Oxide (NCA) chemistry. This specific formulation allows the battery to achieve high capacity while maintaining a stable thermal profile. Key Highlights:
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However, numerous voices also caution that the relationship is not officially confirmed: