Panasonic: Ncr21700t Datasheet
The Panasonic NCR21700T occupies an important niche: high energy per cell in the 21700 mechanical form factor suited to designs where runtime/range and energy density matter more than extreme continuous discharge. Successful use depends on treating the cell as an energy‑centric building block: respect charge/discharge limits, implement robust BMS and thermal management, derate where longevity or safety is critical, and validate real‑world performance through testing and modeling. For high‑power use cases, consider power‑optimized 21700 variants or more aggressive parallelization combined with careful thermal design.
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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
The NCR21700T is engineered with Panasonic’s proprietary Nickel-Cobalt-Aluminum (NCA) chemistry, which maximizes capacity without sacrificing safety. Specification Technical Detail Nominal Capacity 4800mAh – 5000mAh Nominal Voltage 3.6V – 3.7V Max Charge Voltage Continuous Discharge Current 10A to 30A (application-dependent) Peak Discharge Current Cycle Life 500 to 1,000+ cycles (at 80% capacity) Dimensions 21.1mm (Diameter) x 70.4mm (Height) Weight ~65.0g – 70.0g Key Performance Highlights
High Energy Density: 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.
Discharge Characteristics: While some variants are rated for 10A continuous use, high-drain versions can sustain 30A continuous and 40A peaks, suitable for brushless motor systems in brands like Makita or Milwaukee.
Safety Mechanisms: The cell includes an integrated PTC (Positive Temperature Coefficient) resistor that increases resistance during temperature spikes to prevent short-circuits, alongside a built-in safety valve to relieve internal pressure. Charging and Storage Guidelines
To maximize the lifespan of the NCR21700T, follow the standard CC-CV (Constant Current-Constant Voltage) charging protocol.
Standard Charge: Charge at 2500mA (0.5C) until the voltage reaches 4.2V. panasonic ncr21700t datasheet
Cut-off Voltage: The discharge should be terminated at 2.5V to avoid permanent cell degradation.
Temperature Range: Optimal charging occurs between 10°C and 45°C, while discharge is safe from -20°C up to 60°C. NCR21700T vs. NCR21700A NCR21700 data sheet
The Panasonic NCR21700T is a high-performance, cylindrical lithium-ion cell designed for high-drain applications that require both high energy density and substantial power output. Often referred to as a "Tesla-style" cell due to its 21700 form factor, it offers a significant capacity jump over traditional 18650 batteries while maintaining a compact profile for battery packs. Key Specifications at a Glance
Based on official NCR21700 datasheets and technical specifications from BDtronics, here are the core electrical and physical parameters: Specification Model Typical Capacity Rated/Minimum Capacity 4800mAh – 4900mAh Nominal Voltage 3.6V – 3.7V Max Charge Voltage Discharge Cut-off Voltage 2.5V – 3.0V Max Continuous Discharge 10A to 30A (Depending on variant/temp) Peak Discharge Current Cycle Life 500 – 1000+ cycles Weight ~65g – 70g Dimensions 21.1mm (D) x 70.4mm (H) Performance Characteristics NCR21700 data sheet
Panasonic NCR21700T Datasheet: Unveiling the Features and Benefits of this High-Performance Lithium-Ion Battery
The Panasonic NCR21700T is a high-performance lithium-ion battery designed for a wide range of applications, from consumer electronics to industrial devices. As a leading manufacturer of lithium-ion batteries, Panasonic has engineered the NCR21700T to deliver exceptional performance, reliability, and safety. In this blog post, we'll dive into the datasheet of the Panasonic NCR21700T, exploring its key features, specifications, and benefits.
Overview of the Panasonic NCR21700T
The Panasonic NCR21700T is a 21mm x 70mm cylindrical lithium-ion battery with a nominal voltage of 3.6V and a capacity of 4000mAh. The battery is designed to provide a high level of energy density, making it an ideal choice for applications where space and weight are limited. The Panasonic NCR21700T occupies an important niche: high
Key Features and Specifications
Here are the key features and specifications of the Panasonic NCR21700T:
Benefits of the Panasonic NCR21700T
The Panasonic NCR21700T offers several benefits that make it an attractive choice for various applications:
Applications of the Panasonic NCR21700T
The Panasonic NCR21700T is suitable for a wide range of applications, including:
Conclusion
The Panasonic NCR21700T is a high-performance lithium-ion battery that offers exceptional performance, reliability, and safety. With its high energy density, long cycle life, and high discharge rate, the battery is suitable for a wide range of applications. Whether you're designing an electric vehicle, consumer electronics, or industrial devices, the Panasonic NCR21700T is an excellent choice. By understanding the features and benefits of this battery, you can design and develop innovative products that meet the demands of today's market. Benefits of the Panasonic NCR21700T The Panasonic NCR21700T
Bottom Line Up Front: The NCR21700T is a high-capacity, moderate-drain cell, not a high-power one. The datasheet reveals a battery designed for energy density (laptops, power banks, backup storage) rather than demanding power tool or high-performance EV applications.
| Model | Capacity | Max Cont. | Charge Rate | Best For | |-------|----------|-----------|-------------|----------| | Panasonic NCR21700T | 4800 mAh | 9.6A | 3.2A | Low-drain energy storage | | Samsung 50G | 5000 mAh | 9.8A | 4.9A | Slightly better charging | | LG M50LT | 5000 mAh | 14.5A | 3.4A | Better pulse power | | Molicel P42A | 4200 mAh | 45A | 8.4A | High-power (tools, vaping) | | Samsung 40T | 4000 mAh | 35A | 6A | High-power / hybrid |
Takeaway: The NCR21700T competes in the low-drain energy segment, but Samsung 50G or LG M50LT are often better choices for similar capacity with slightly higher current.
Before we get into the weeds, here is what the datasheet promises:
Panasonic’s target applications, as implied by the NCR21700T datasheet, include:
Not recommended for: Sub-ohm vaping (requires 30A+), jump starters, or any device exceeding 18A continuous without active cooling.
| Parameter | Value | Reviewers' Take | |-----------|-------|------------------| | Nominal Capacity | 4800 mAh (0.2C discharge) | Excellent for 21700 format. Slightly above the common 4500-5000 mAh range. | | Nominal Voltage | 3.6V (3.7V typical) | Standard Li-ion. | | Max Discharge Current | 2C (9.6A continuous) / 4C (19.2A pulse) | Major limitation. This is a low-drain cell. | | Standard Charge | 1.4A (0.3C) | Very slow by modern 21700 standards. | | Fast Charge | 3.2A (0.67C) | Still slow. Compare to Samsung 50G or LG M50LT (1C+). | | Max Charge Voltage | 4.20V ±0.03V | Standard, not high-voltage (4.35V). | | Cut-off Voltage | 2.5V | Standard. | | Internal Resistance | ≤ 40 mΩ (AC IR) | Good, but not exceptional (high-power cells are ~10 mΩ). | | Weight | ~69g | Very light for capacity – good energy/weight ratio. | | Operating Temp | Charge: 0~45°C / Discharge: -20~60°C | Standard range. |