Panasonic Ncr21700t Datasheet Hot ((install))

Introduction

The Panasonic NCR21700T is a high-performance lithium-ion battery cell designed for various applications, including electric vehicles, renewable energy systems, and industrial power tools. In this guide, we will explore the key features, specifications, and characteristics of the NCR21700T battery cell based on its datasheet.

Overview of Panasonic NCR21700T

The NCR21700T is a 21mm x 70mm cylindrical lithium-ion battery cell with a nominal voltage of 3.7V and a capacity of 4000mAh. It features a high discharge rate, long cycle life, and excellent thermal stability, making it suitable for demanding applications.

Key Features and Specifications

Here are the key features and specifications of the Panasonic NCR21700T:

Datasheet Parameters

Here are some key parameters from the Panasonic NCR21700T datasheet:

| Parameter | Value | | --- | --- | | Nominal Capacity | 4000mAh | | Internal Resistance | ≤ 10mΩ | | Weight | approximately 44.5g | | Dimensions | 21mm x 70mm |

Thermal Characteristics

The NCR21700T has a high thermal stability, which is essential for safe and reliable operation. Here are some thermal characteristics:

Protection and Safety Features

The NCR21700T has built-in protection and safety features:

Applications

The Panasonic NCR21700T is suitable for various applications: panasonic ncr21700t datasheet hot

Conclusion

The Panasonic NCR21700T is a high-performance lithium-ion battery cell with excellent characteristics, making it suitable for demanding applications. This guide provides a comprehensive overview of the NCR21700T datasheet, highlighting its key features, specifications, and thermal characteristics. When designing or selecting batteries for your applications, refer to this guide and the official datasheet for accurate and up-to-date information.

Panasonic NCR21700T high-capacity lithium-ion cell typically rated at with a nominal voltage of

. Below are the key specifications and thermal operating limits derived from datasheet reports: Промелектроніка Core Specifications Typical Capacity: Minimum Capacity: 4800–4900 mAh Nominal Voltage: Charging Voltage: Standard Charging Current: 2500 mA (approx. 3 hours) Discharge Cut-off Voltage: Maximum Weight: Промелектроніка Temperature & Thermal Limits

The "hot" or maximum operating temperatures for this cell are critical for safety and performance: Discharge Temperature Range: Charge Temperature Range: Storage Temperature Range: Safety Threshold:

Performance reports indicate that testing typically stops if the surface temperature reaches to prevent cell degradation or thermal instability. Discharge Performance Data from the NCR21700 Datasheet shows characteristics for varying current loads: High-Drain Capability: The cell can handle continuous discharge currents of 5A, 10A, 15A, and up to 20A

, though higher currents will result in faster voltage drops and increased heat generation. Energy Density: Approximately (volumetric) and (gravimetric). Промелектроніка Typical Applications

Due to its high energy density and discharge capability, it is frequently used in: Electric Vehicles (EVs):

Similar to those found in Tesla Model 3/Y packs (2170 format). Power Tools & E-bikes:

Panasonic NCR21700T is a high-capacity, high-discharge lithium-ion battery. While often associated with

cells due to its 21700 form factor and 5000mAh capacity, finding an official "public" datasheet directly from Panasonic can be difficult as these cells are primarily produced for high-volume industrial and automotive clients. Core Specifications

The following technical details are compiled from reputable retail and testing sources: Specification Typical Capacity Minimum Capacity 4800–4900 mAh Nominal Voltage Max Charge Voltage Discharge Cut-off Max Continuous Discharge 15A to 30A (Depending on source/thermal conditions) Peak Discharge Cycle Life >500 to 1000+ cycles ~66.8g to 70g Thermal & "Hot" Characteristics

When users search for "hot" datasheets, they are typically looking for thermal safety limits or high-temperature performance metrics. NCR21700 data sheet

The Panasonic NCR21700T is a high-performance lithium-ion battery cell originally popularized as a primary component in Tesla Model 3 battery packs. While often difficult to find through official retail channels as a standalone consumer product, it is highly sought after in the DIY EV and flashlight communities for its balance of high capacity and discharge capability. Core Specifications Datasheet Parameters Here are some key parameters from

Based on technical data typically associated with the NCR21700 series, these cells offer robust energy density and thermal stability. Nominal Capacity: ~4,800mAh to 5,000mAh Nominal Voltage: 3.6V Charging Voltage: 4.2V (Full Charge) Standard Discharge Cutoff: 2.5V to 3.0V Weight: Approximately 65.0g Dimensions: ~21.1mm (Diameter) x 70.3mm (Height) Performance Characteristics

The "T" variant is noted for its ability to handle higher current draws compared to standard energy-focused cells.

Discharge Rates: It supports continuous discharge rates typically ranging from 10A to 15A, with some pulse capabilities reaching higher under specific thermal management conditions.

Thermal Window: Standard operating temperatures range from 10°C to +45°C for charging and -20°C to +60°C for discharging.

Energy Density: Features high volumetric energy density (~775 Wh/l), making it ideal for compact, high-capacity battery packs. Community & Usage Notes

Origin: Many NCR21700T cells found on the market are "reclaimed" or salvaged from electric vehicle modules. These may show signs of removed aluminum wire bonds on the terminals.

Availability: Because Panasonic primarily supplies these to OEMs like Tesla, official retail datasheets can be elusive. Many users rely on community-tested models and digital twins from providers like Batemo for precision engineering.

Flashlight Compatibility: While powerful, users should note that these are usually "flat-top" cells and may require specific adapters or spacers for use in standard consumer flashlights.

against other high-current 21700 cells like the Molicel P45B or Samsung 50S? Panasonic NCR2170-M Battery Data, Model and Report

The Panasonic NCR21700T is a high-performance, industrial-grade lithium-ion cell designed to meet the extreme power demands of modern high-drain applications. Originally developed for automotive and heavy-duty industrial use, this 21700 cell is often referred to as "hot" in the enthusiast community due to its exceptional 40A peak discharge capability and its frequent use in Tesla battery architectures. Panasonic NCR21700T Core Specifications

The NCR21700T balances high energy density with significant current output. Below are the verified technical specifications from the Panasonic Industrial datasheet and reputable technical suppliers. Specification Detail Reference Model Name Form Factor 21700 (21mm x 70.3mm) Nominal Capacity 4800mAh (Rated) / 5000mAh (Typical) Nominal Voltage 3.6V – 3.7V Max. Charge Voltage Max. Continuous Discharge 30A (Recommended Max) Pulse/Peak Discharge Standard Charge Current 2500mA (0.5C approx.) Cell Weight ~65g - 67g Cycle Life >500 cycles (to 80% capacity) Thermal & Operational Characteristics

The "hot" performance of the NCR21700T is heavily dependent on temperature management. Operating outside these ranges can lead to thermal runaway or permanent capacity degradation.

Discharge Temperature Range: -20°C to +60°C. High-current draws (above 15A) will generate internal heat rapidly; active cooling is recommended for sustained 30A usage.

Charge Temperature Range: 10°C to +45°C. Charging below 10°C is generally not recommended, and charging at 0°C or below can cause lithium plating, destroying the cell. move away immediately.

Storage Guidelines: The ideal storage temperature is 10°C to 25°C at a 40-60% state of charge (~3.7V–3.8V). Key Applications: Why it’s "Hot" on the Market

The NCR21700T is a preferred "game-changer" for several high-drain sectors: NCR21700 data sheet

✅ Good for:

Practical Guide: How to keep the NCR21700T from getting too hot

Given the "hot" nature of this cell, here are four actionable steps derived from the datasheet's application notes.

3. Temperature-Based Safety Mechanisms

The NCR21700T includes internal safety features activated by heat or pressure:

2. Monitor Terminal Temperature

Buy an infrared thermometer. If the metal can exceeds 55°C (131°F) , stop discharging. The datasheet explicitly states that exceeding 60°C voids the warranty and accelerates aging.

Conclusion

The Panasonic NCR21700T is a "hot" cell in the sense of delivering reliable 15A-20A continuous current, but its datasheet makes clear that thermal vigilance is non-negotiable. It is not a low-impedance powerhouse like the Samsung 40T; rather, it is a high-energy cell that tolerates moderate heat when properly managed. Engineers selecting this cell for hot environments (e.g., under-hood EV sensors or high-temperature power banks) must incorporate derating, pulsed load profiles, and forced convection. Ultimately, the NCR21700T datasheet teaches that in lithium-ion engineering, "hot" performance is not about maximizing current—it is about understanding the precise relationship between internal resistance, temperature rise, and long-term reliability.

The Panasonic NCR21700T is a high-performance 21700 lithium-ion cell frequently cited for its balance of high capacity and substantial discharge capability, though it is often noted as being sourced from electric vehicle battery packs (like the Tesla Model 3) rather than being sold as a standalone retail product by Panasonic. Key Specifications Full Product Name: Panasonic NCR21700T Lithium-Ion Battery Nominal Capacity: 4800mAh to 5000mAh Nominal Voltage: 3.6V – 3.7V Maximum Charge Voltage: 4.2V

Continuous Discharge Current: Varies by source, typically listed at 30A maximum continuous (with peaks up to 40A) in high-drain applications. Some conservative retail listings suggest 10A–15A for optimal longevity. Operating Temperature (Discharge): -20°C to +60°C Operating Temperature (Charge): 0°C to +45°C (Standard)

Dimensions: Approximately 21.1mm (Diameter) x 70.4mm (Length) Weight: ~65g – 70g Performance & Thermal Behavior

Heat Management: During high-rate discharge (e.g., 20A+), internal resistance can cause significant surface temperature increases. For safety, these cells should be monitored to ensure they do not exceed a surface temperature of 60°C during operation.

High Drain Performance: Testers from community forums like Endless Sphere note that these cells maintain stable voltage even under heavy loads, making them popular for DIY EV projects and high-power flashlights.

Cycle Life: Rated for over 1,000 cycles under standard conditions before significant capacity loss. Safety Note

This is an unprotected (flat top) cell. It does not have a built-in protection circuit (PCM/PCB) and must be used with external battery management systems to prevent overcharging, over-discharging, and short circuits.

5. Alternatives to the NCR21700T If You Hate Heat

If the "hot" factor is a dealbreaker, the Panasonic datasheet itself suggests looking at different chemistries:

2. Pressure Vent

Nominal Specifications and the "Hot" Threshold

At 20°C ambient, the NCR21700T datasheet specifies a nominal capacity of 4.0 Ah to 4.2 Ah with a nominal voltage of 3.6V. The "hot" classification arises from its maximum continuous discharge rating: 15A to 20A (depending on temperature cutoff settings). Unlike lower-impedance cells (e.g., Molicel P42A), the NCR21700T operates near its thermal limit at 20A. The datasheet explicitly warns that continuous discharge at >15A will elevate the cell surface temperature beyond 60°C, a critical threshold where cycle life degrades exponentially.