Panasonic Ncr21700t Datasheet May 2026

Panasonic NCR21700T is a high-capacity lithium-ion cell in the 21700 form factor, often associated with high-performance electric vehicle (EV) applications and energy storage systems. While the "T" suffix is frequently used in secondary markets (often appearing as rewrapped or salvaged Tesla Model 3/Y cells), the core performance closely aligns with the official specifications. ⚡ Key Specifications Typical Capacity Minimum Capacity 4800 - 4900 mAh Nominal Voltage 3.6V - 3.7V Charge Voltage 4.2V ± 0.05V Discharge Cut-off Max Continuous Discharge 10A - 15A (standard); up to 30A (burst/high-drain) ~65.0g - 70.0g 📐 Physical Dimensions 21.1 mm (max 21.35 mm with tube) 70.3 mm (max 70.5 mm) Terminal Style: Flat top (typically unprotected) Промелектроніка 🌡️ Operating Temperatures 10°C to 45°C Discharge: -20°C to 60°C -20°C to 50°C Промелектроніка 🚀 Performance Features High Energy Density:

While many high-power cells have a flat discharge curve that drops sharply near the end, the NCR21700T offers a very smooth, gradual slope. This allows devices with simple voltage-based fuel gauges to estimate remaining capacity with reasonable accuracy. panasonic ncr21700t datasheet

Q3: Is the NCR21700T a genuine Tesla cell?
Tesla’s 2170 cells (used in Model 3) are similar but not identical. The NCR21700T is the commercial version, while Tesla uses a proprietary formulation with slightly higher nickel content. Panasonic NCR21700T is a high-capacity lithium-ion cell in

The Panasonic NCR21700T 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 Standard Cycle: Under 0

• Standard Cycle: Under 0.5C charge/discharge conditions at 25°C, the cell typically retains >80% capacity after 500 cycles.
• High Drain: Higher continuous discharge currents will accelerate capacity fade due to internal heat generation.

To maximize the lifespan of the NCR21700T, follow the standard CC-CV (Constant Current-Constant Voltage) charging protocol.

2.5. Cycle Life Graph Interpretation

The datasheet includes a cycle life curve showing:

The following data reflects the standard operating parameters found in the official datasheet. Nominal Capacity: 4800 mAh (Minimum 4700 mAh) Nominal Voltage: 3.6V Charging Voltage: 4.2V Standard Charging Current: 1.55A

• 500 cycles @ 0.5C charge / 0.5C discharge → retains ≥70% initial capacity.
• At 1C (5A) discharge, expect 400 cycles to 70%.
• At 15A discharge, cycle life drops to ~250–300 cycles.