Panasonic — Ncr21700t Datasheet [hot]
The voltage is held at 4.2V while the current naturally tapers down. Charging terminates once the current drops below a designated threshold (usually around 50mA to 100mA). Discharge Performance Curves
Based on testing and related documentation for the Panasonic 21700 family, here is the breakdown of its performance: Specification (Approx.) Nominal Capacity 4,800 mAh to 5,000 mAh Nominal Voltage Max Charge Voltage Standard Charge Current 2.5A (approx. 0.5C) Continuous Discharge 10A (Optimal) up to 15A Max Discharge (Pulse) Up to 20A (with significant heat/sag) Energy Density ~263 Wh/kg Why This Cell Matters
The Ultimate Guide to the Panasonic NCR21700T Li-ion Battery: Datasheet Analysis, Specs, and Applications
-20°C to 20°C (At roughly 40-50% State of Charge) panasonic ncr21700t datasheet
The is a premier lithium-ion cell designed to fulfill the extreme requirements of modern high-capacity and high-drain systems . Transitioning from the industry-standard 18650 form factor to the 21700 size allows this cell to offer a significant leap forward in volumetric energy density, run-time, and thermal stability.
| Parameter | Specification | Notes | | :--- | :--- | :--- | | | NCA (Nickel Cobalt Aluminum) | LiNiCoAlO₂ / Graphite | | Nominal Capacity | 4800 mAh (4.8 Ah) | Standard discharge (0.2C) | | Minimum Capacity | 4750 mAh | | | Nominal Voltage | 3.6 V | Average operating voltage | | Charging Voltage | 4.20 V | Max voltage | | Discharge Cut-off | 2.50 V | Minimum voltage | | Max Charge Current | 4850 mA (approx. 1C) | Standard charging | | Max Discharge Current | 15 A (Continuous) | Temperature dependent | | Weight | Approx. 69g – 71g | | | Dimensions | Diameter: 21.15mmHeight: 70.15mm | Excluding terminals | | Energy Density | ~250 Wh/kg (Gravimetric) | Calculated based on weight |
The Panasonic is a high-performance lithium-ion cell widely used in electric vehicles, power tools, and high-drain electronics. It utilizes a Nickel-Cobalt-Aluminum (NCA) chemistry, optimized for high energy density and steady discharge rates. 🔋 Core Electrical Specifications The voltage is held at 4
If building a high-draw battery pack, integrating a Battery Management System (BMS) with external temperature probes is highly recommended to protect against thermal runaway. 4. Cycle Life and Longevity
Based on the official specifications for the Panasonic NCR21700T (typically referred to as the ), I have developed a comprehensive technical report. This report is designed to be useful for battery engineers, product designers, and procurement specialists.
The Panasonic NCR21700T is a premier choice for designers looking to maximize runtime and energy density in their products. As seen in the detailed specification overview, its 4800-5000mAh capacity makes it an industry leader for high-capacity applications. 1C) | Standard charging | | Max Discharge
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.
The NCR21700T offers roughly 40% more energy than a comparable 18650 cell, making it ideal for applications where maximizing runtime is critical without significantly increasing the battery pack volume.
. This translates to lighter, more compact battery packs that last longer between charges. B. High Discharge Capabilities
The datasheet is honest but incomplete. Always perform your own thermal and cycle-life tests at your intended discharge rate. The 2C limit is real – exceeding it will accelerate aging and may cause cell venting.
Safety and longevity depend heavily on staying within these thermal windows. 10°C to 45°C Discharging: -20°C to 60°C Storage (1 year): -20°C to 20°C Energy Density: ~263 Wh/kg (Gravimetric) 🛠️ Key Performance Features