Panasonic Ncr21700t Datasheet _top_ May 2026
Panasonic NCR21700T Datasheet: A Deep Dive into Specs, Performance, and Applications
When engineers, hobbyists, and battery enthusiasts search for the Panasonic NCR21700T datasheet, they are typically looking for more than just a PDF file. They want voltage curves, discharge ratings, thermal limits, and safety specifications to determine if this cell is right for their next project—whether it’s a high-power e-bike, a DIY power wall, or a professional medical device.
9. Real-World Testing vs. Datasheet Claims
We tested five NCR21700T cells (batch code: P02C, 2024 production) against the datasheet: panasonic ncr21700t datasheet
The Panasonic NCR21700T is a high-performance lithium-ion battery known for its high energy density and substantial discharge capabilities. While often referred to in enthusiast communities as a "Tesla cell" due to its use in electric vehicle battery packs, it is also a popular choice for power tools, high-drain flashlights, and DIY energy storage. Core Technical Specifications Panasonic NCR21700T Datasheet: A Deep Dive into Specs,
The Verdict
The Panasonic NCR21700T is the "muscle car" of 21700 cells. It has massive displacement (capacity) and solid horsepower (amps). It is not the absolute highest discharge cell on the market, but it offers one of the best capacity-to-amperage ratios available. including overcharge protection
4. Mechanical Dimensions
- Format: Cylindrical (21700)
- Positive Terminal: Button top (typically) or flat top depending on OEM variant.
- Negative Terminal: Flat case (Negative pole).
- Can Material: Steel casing with insulating sleeve.
2.4. Internal Resistance (IR)
The datasheet guarantees ≤30 mΩ (AC IR at 1 kHz). Fresh cells often measure 18–22 mΩ. This low IR reduces voltage sag and heating. Over time, IR will rise to ~40 mΩ near end-of-life (500 cycles). High IR is the first sign of a failing cell.
- Model: NCR21700T
- Type: Lithium-ion (Li-ion)
- Nominal voltage: 3.6V
- Capacity: 48Ah (typical)
- Chemistry: Lithium nickel cobalt oxide (NCA)
- Applications: Electric vehicles, energy storage systems, and other industrial applications
Electrical Specifications
| 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 |
Q: What are the safety features of the Panasonic NCR21700T? A: The datasheet highlights several safety features, including overcharge protection, over-discharge protection, and a protective circuit that prevents excessive current flow.
