| Parameter | Value |
|-----------|--------|
| Standard Charge Current | 1.5 A (0.3 C) |
| Max. Charge Current | 4 A (0.8 C) |
| Charge Cut-off Voltage | 4.20 V ±0.03 V |
| Standard Discharge Current | 2.5 A |
| Max. Continuous Discharge Current | 15 A (or up to 20 A pulsed, check latest specs) |
| Discharge Cut-off Voltage | 2.5 V |
| AC Impedance (1 kHz) | ≤ 30 mΩ |
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.
If you want, I can:
Panasonic NCR21700T is a high-performance lithium-ion battery known for its high energy density and high discharge capabilities. While often associated with Tesla Model 3 and Model Y
battery packs, it is also popular in power tools, drones, and e-bikes. TechInsights Core Performance Features High Capacity : Typically rated at (typical) or (minimum). High Discharge Rate : Supports continuous discharge currents of 25A to 30A , with peak pulses up to Long Cycle Life : Designed for durability, often exceeding 1,000 charge/discharge cycles Safety & Stability
: Features stable NCM (Nickel-Cobalt-Manganese) chemistry and is manufactured by , a leader in battery technology. Technical Specifications
The 5,000 mAh rating is industry-leading for 21700 cells available to the public. At 0.2C (1,000 mA) discharge to 2.5V at 25°C, a fresh cell will deliver at least 5,000 mAh. However, at higher drain (e.g., 10A), expect capacity to drop to ~4,600–4,700 mAh due to internal resistance losses. The datasheet’s “minimum capacity” of 4,900 mAh ensures consistency across production batches. panasonic ncr21700t datasheet
Before diving into complex charts, here are the headline specifications as listed in the Panasonic NCR21700T technical datasheet:
| Parameter | Value | |-----------|-------| | Model | NCR21700T | | Nominal Voltage | 3.6 V (3.7 V typical in some revisions) | | Typical Capacity | 5,000 mAh (0.2C discharge, 25°C) | | Minimum Capacity | 4,900 mAh | | Nominal Energy | 18.0 Wh | | Standard Charge Current | 1.5 A (0.3C) | | Max Continuous Discharge Current | 15 A (Note: some datasheets list 12.5A at 80°C cutoff) | | Max Discharge (Pulse) | 30 A (< 5 seconds) | | Internal Impedance (AC, 1kHz) | ≤ 30 mΩ (typical ~20 mΩ) | | Charge Voltage (CC/CV) | 4.20 V ± 0.03 V | | Cut-off Discharge Voltage | 2.50 V | | Cycle Life | ≥ 500 cycles (to 70% of initial capacity at 0.5C/0.5C) | | Weight | 69 g (max) | | Operating Temperature (Discharge) | -20°C to +60°C | | Operating Temperature (Charge) | 0°C to +45°C |
These numbers confirm the NCR21700T as a high-capacity, medium-drain cell. It is not a “high current” cell like the Samsung 40T (35A), but it excels in applications requiring long runtime with moderate power bursts.
The datasheet includes a cycle life curve showing:
This makes the NCR21700T ideal for low-to-medium drain long-life applications like solar storage, not for racing drones.
The Panasonic NCR21700T is a high-capacity 21700-format lithium-ion cell commonly used in energy storage, e-bikes, power tools, and high-capacity battery packs. Below is a concise, shareable post summarizing its datasheet specifications, performance characteristics, and usage considerations. | Parameter | Value | |-----------|--------| | Standard
⚠️ Note: This is a draft for reference. Always refer to Panasonic’s official NCR21700T datasheet for production use. Specifications may vary by production date or region.
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
An analysis of the Panasonic NCR21700T is less about a simple cylinder of metal and more about the "quiet revolution" of the energy sector. This specific cell, often described as a modified version of the batteries powering high-performance electric vehicles, represents the peak of modern energy density and power delivery. The Anatomy of Power: Key Specifications NCR21700 data sheet
outlines a powerhouse designed for "Mobility" and "Social Infrastructure": , with a typical reach of
. This is roughly 40% more than the maximum capacity of the older 18650 standard. Voltage Range: Operates at a 3.6V nominal voltage , with a charging peak of . It is critical to never discharge below to avoid permanent internal damage. Energy Density: It packs a punch with (volumetric) and The 5,000 mAh rating is industry-leading for 21700
(gravimetric). In simpler terms, it provides more energy per gram than almost any consumer cell of its time. Physical Footprint:
At 21mm in diameter and 70mm in height, it is slightly larger than an 18650 but offers a significantly better ratio of weight to power. The Essay: The Silicon-Anode Frontier
The "T" in NCR21700T is often associated with cells that feature Panasonic’s high-power engineering, frequently seen in advanced electric vehicle packs
. This cell isn't just a battery; it’s a solution to the "range anxiety" that haunted the early 2010s. Products for Business - Panasonic Energy Co., Ltd.
The Panasonic NCR21700T uses standard LiNiCoAlO2 (NCA) chemistry – similar to Tesla cells. Charging requirements:
| Parameter | Recommended | Absolute Max | |-----------|-------------|---------------| | Charge voltage | 4.20 V | 4.25 V (risk of plating) | | Standard charge current | 1.5 A (0.3C) | – | | Fast charge current | 3.0 A (0.6C) | 4.0 A (must cut off at 4.20V) | | Trickle charge (below 2.5V) | Do not apply – cell considered damaged | | | Temperature range | 0°C to +45°C | – |
Critical warning from the datasheet: Do not charge below 0°C. Lithium plating occurs, causing internal short circuits. Also, do not float charge – terminate when current drops to <100 mA.