Panasonic — Ncr21700t Datasheet [2021]
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 21700 form factor is larger than the traditional 18650 cell, measuring 21mm in diameter and 70mm in length. This increased volume allows the NCR21700T to deliver significantly higher capacity and power output.
Interrupts current delivery if demands exceed 15A continuous per cell.
Limiting the charge voltage to 4.1V and avoiding deep discharges (above 3.0V) can double the total cycle life. Critical Safety and Temperature Thresholds
Providing maximum range for city commuting. Portable Power Stations & Energy Storage Systems (ESS). High-End Flashlights: Requiring long runtime. panasonic ncr21700t datasheet
Temperature must not exceed 60°C during high-current continuous discharge. Internal Resistance and Cycle Life Internal Impedance
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.
Light electric vehicles, e-bikes, and electric scooters benefit from the high capacity-to-weight ratio.
These cells use an NCA (Nickel Cobalt Aluminum) chemistry. While they offer high energy density, they require sophisticated thermal management because they generate significant heat during fast charging. The "Tesla" Connection: The Panasonic NCR21700T is a 21mm x 70mm
The Panasonic NCR21700T's impressive specifications make it suitable for a wide range of applications, including:
) additives into the traditional graphite matrix anode. Pure graphite holds a theoretical capacity of . Silicon boasts a much higher theoretical capacity ( ), but it suffers from severe volumetric expansion (
15A (with temperature monitoring). Discharge Cut-off Voltage: 2.5V. Approximate Weight: 68 grams.
15A (With proper temperature monitoring) Discharge Cut-off: 2.5V Internal Resistance: ≤ 15 mΩ (AC 1kHz) 📏 Physical Dimensions & Weight This increased volume allows the NCR21700T to deliver
Complete Guide to the Panasonic NCR21700T Battery Cell: Datasheet, Specs, and Performance Analysis
Continuous 1C charge and 1C discharge at 25°C.
For safe and optimal use, the NCR21700T cell must always be paired with a high-quality BMS that enforces safe operating limits—this is crucial for battery longevity and personal safety.
| Parameter | Value | Reviewers' Take | |-----------|-------|------------------| | | 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. |
