Panasonic Ncr21700t Datasheet |best| Instant

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 “NCR“ prefix in the model name is an important technical indicator. NCR stands for , a cathode chemistry that combines lithium‑nickel‑cobalt‑aluminum (NCA) or lithium‑nickel‑cobalt‑manganese (NCM) formulations. This chemistry delivers:

Approximately 21.35mm (diameter) by 70.3mm (height) . Weight: Maximum 65.0g . panasonic ncr21700t datasheet

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| Parameter | Value | |-----------|-------| | | NCR21700T | | Nominal Voltage | 3.6 V (3.7 V typical in some revisions) | | Typical Capacity | 5,000 mAh (0.2C discharge, 25°C) | | Minimum Capacity | 4,900 mAh | | Nominal Energy | 18.0 Wh | | Standard Charge Current | 1.5 A (0.3C) | | Max Continuous Discharge Current | 15 A (Note: some datasheets list 12.5A at 80°C cutoff) | | Max Discharge (Pulse) | 30 A (< 5 seconds) | | Internal Impedance (AC, 1kHz) | ≤ 30 mΩ (typical ~20 mΩ) | | Charge Voltage (CC/CV) | 4.20 V ± 0.03 V | | Cut-off Discharge Voltage | 2.50 V | | Cycle Life | ≥ 500 cycles (to 70% of initial capacity at 0.5C/0.5C) | | Weight | 69 g (max) | | Operating Temperature (Discharge) | -20°C to +60°C | | Operating Temperature (Charge) | 0°C to +45°C | The 5,000 mAh rating is industry-leading for 21700

The NCR21700T excels in applications that prioritize runtime over raw power. As one DIY electric skateboard builder noted in forum discussions, cells like the NCR21700T lag behind competitors in the continuous discharge rate area (around 10 A max), meaning that for power‑hungry applications, they may need to be current‑limited to ensure safety and longevity.

Because they were designed for EVs, they are optimized for high-volume manufacturing and long-cycle life rather than the extreme "raw" discharge power found in high-performance power tool cells. Performance Insights for DIYers If you are using these for flashlights or DIY e-bike packs: Capacity King: This chemistry delivers: Approximately 21

Angle grinders and drills that require sudden bursts of power.