Panasonic Ncr21700t Datasheet Fix -
Delivers more watt-hours per kilogram compared to standard 18650 cells.
The 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
Because of its 21700 form factor—which is slightly larger than the traditional 18650 cell—it provides a higher capacity-to-size ratio. This makes it ideal for:
When designing battery packs, the emphasizes following the mechanical drawing for precise dimensions, particularly regarding the space needed for spot welding terminal tabs. 4. Ideal Applications
| Parameter | Value | |---|---| | | NCR21700T | | Manufacturer | Panasonic / Sanyo | | Format | 21700 (Cylindrical) | | Nominal Capacity | 4,800 – 5,000 mAh (varies by source) | | Typical Capacity | 5,000 mAh | | Minimum Capacity | 4,900 mAh (some variants) | | Nominal Voltage | 3.6 V – 3.7 V | | Maximum Charge Voltage | 4.20 V ± 0.05 V | | Discharge Cut‑off Voltage | 2.50 V – 2.75 V (depending on variant) | | Standard Charge Current | 2 A (CC‑CV) | | Maximum Continuous Discharge Current | 10 A – 20 A (see discussion below) | | Maximum Pulse Discharge Current | 12 A – 35 A (pulse duration dependent) | | Internal Resistance | ≤ 14 mΩ (typical) | | Cycle Life | > 700 cycles (to 60 % capacity retention) | | Operating Temperature (Charge) | 0 °C to +45 °C | | Operating Temperature (Discharge) | −20 °C to +60 °C | | Diameter | 21 mm (± 0.2 mm) | | Height | 70 mm (± 0.3 mm) | | Weight | 66.8 g – 70 g | | Terminal Type | Flat‑top (positive terminal) | | Protection Circuit | Not integrated (PCM not present) | panasonic ncr21700t datasheet
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As an unprotected cell, the Panasonic NCR21700T requires careful handling and appropriate safety measures.
The following data represents the standard electrical and mechanical characteristics of the NCR21700T cell.
The cell maintains a flat discharge curve under moderate loads. At a 5A discharge, the voltage drops slowly from 4.2V to 3.4V before dropping sharply toward the 2.5V limit. Higher current draws lower the effective capacity due to internal resistance and thermal sag. Key Performance Advantages High Energy Density Delivers more watt-hours per kilogram compared to standard
The 21700 format offers roughly 50% more volume than standard 18650 cells. Panasonic uses this extra volume to pack advanced chemistry, yielding a gravimetric energy density exceeding 250 Wh/kg. 2. Charge and Discharge Characteristics
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
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The datasheet mandates a standard charging algorithm: Key Specifications at a Glance Because of its
Used in solar backup walls and uninterruptible power supplies (UPS) due to its predictable cycle life.
Used in some pre‑built electric skateboards (e.g., Ownboard Zeus and Meepo Hurricane) as a balance between capacity and moderate power delivery.
For longest life, stay ≤10A. For occasional 15A bursts (e.g., power tools), the cell performs admirably.
