Once the cell terminal voltage hits
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.
The Panasonic is a high-performance lithium-ion cell widely used in electric vehicles, power tools, and high-drain electronics. It utilizes a Nickel-Cobalt-Aluminum (NCA) chemistry, optimized for high energy density and steady discharge rates. 🔋 Core Electrical Specifications panasonic ncr21700t datasheet
Data parsed from official testing documentation yields a distinct profile for the bare cell: NCR21700 data sheet
. 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 Once the cell terminal voltage hits The Panasonic
To safely replenish the NCR21700T while maximizing its life span, a standard Constant Current / Constant Voltage (CC/CV) profile must be followed.
| Model | Capacity | Max Cont. | Charge Rate | Best For | |-------|----------|-----------|-------------|----------| | | 4800 mAh | 9.6A | 3.2A | Low-drain energy storage | | Samsung 50G | 5000 mAh | 9.8A | 4.9A | Slightly better charging | | LG M50LT | 5000 mAh | 14.5A | 3.4A | Better pulse power | | Molicel P42A | 4200 mAh | 45A | 8.4A | High-power (tools, vaping) | | Samsung 40T | 4000 mAh | 35A | 6A | High-power / hybrid | The Panasonic is a high-performance lithium-ion cell widely
: As a 21700 cell, it measures roughly 21mm in diameter and 70mm in length. It is significantly larger than the legacy 18650 standard, allowing for approximately 50% more energy storage .
When assessing the NCR21700T, it is critical to understand that not all cells sold under this model number are identical, and the official performance metrics appear to have been clarified unofficially through real-world use.
The headline says 35A Max discharge. But look at the temperature graph. If you actually pull 35A continuously, the cell will hit (194°F) very quickly.
Charging the cell below 0°C can cause lithium plating on the anode, creating internal short circuits and potential thermal runaway. The cell includes a built-in Current Interrupt Device (CID) and a Positive Temperature Coefficient (PTC) resistor. These mechanical safety features vent gases and block current if internal pressure or temperature spikes dangerously. 5. Ideal Applications