Among their lineup, the stands out as a high-capacity cell designed for applications requiring long runtimes and moderate power delivery. This article provides a deep dive into the datasheet specifications, interpreting what the numbers mean for engineers and battery pack designers.
The "T" in NCR21700T is often associated with cells that feature Panasonic’s high-power engineering, frequently seen in advanced electric vehicle packs
. 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 panasonic ncr21700t datasheet
Multiple sources indicate that there are different versions of the NCR21700T in circulation:
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. Among their lineup, the stands out as a
Industrial lithium cells lack built-in protection circuits (PCMs/BMS). Operating outside designated limits poses severe safety risks. Operational Range Critical Limit / Risk 0°C to 45°C
When evaluating the Panasonic NCR21700T against other popular 21700 cells, it is important to focus on its energy‑oriented design: This is roughly 40% more than the maximum
Vendors position the NCR21700T as suitable for building or replacing lithium‑ion battery packs for e‑bikes. Its high energy density enables compact, long‑range packs.
| Specification | Typical Values | | --- | --- | | | 4800mAh / 5000mAh | | Standard Charge | 2A (CC-CV) | | Standard Charging Time | ~6 hours | | Rated Charge | 2A | | Rated Charging Time | ~3.6 hours | | Max Continuous Discharge | 10A (Standard), 2C (6.8A Rated) | | Pulse Discharge (Max) | 12A (5-6 seconds) | | Internal Resistance | 12-14mΩ (Source), ≤14mΩ (Typ) | | Nominal Voltage | 3.6V / 3.7V | | Full Charge Voltage | 4.2V ± 0.05V | | Discharge Cut-off Voltage | 2.5V | | Cycle Life | >500 cycles to >3.84Ah | | Weight | 68g ± 0.5g |
This distinction is crucial for battery pack designers. Using consumer-grade cells in a high-current application expecting the Tesla performance level could lead to overheating, voltage sag, accelerated aging, or even safety incidents.