Panasonic Ncr21700t Datasheet Hot -

If you need 15A continuous, add cooling or lower your current to 10A. If you need 20A+, buy a different cell. Respect the chemistry, and the NCR21700T will deliver 5000 mAh for over 500 cycles. Abuse it, and you’ll learn firsthand why thermal management is the most important line in any datasheet.

Charging a hot NCR21700T is deadly. The datasheet warns against charging below 0°C, but it fails to emphasize: If you attempt to charge a cell that is still hot from discharge (say, 50°C), lithium plating occurs. Needles of lithium metal grow inside, piercing the separator. This leads to an internal short circuit hours or days later—resulting in a fire while the device sits idle on a table.

Retains approximately 70% to 80% of its initial capacity after 300 to 500 standard charge-discharge cycles, depending on depth of discharge (DoD), discharge rates, and temperature.

Disclaimer: Always consult the official Panasonic NCR21700T datasheet directly from Panasonic’s website for the most current specifications. Lithium-ion batteries carry fire and explosion risks if misused. panasonic ncr21700t datasheet hot

Capable of higher bursts, though this significantly increases heat. End-of-Discharge Voltage: 2.5V (Standard cut-off) Thermal & Safety Guidelines

Heat is often generated at bad connections, not inside the cell.

: Designed for high-drain applications. Data indicates stable performance even at continuous discharge rates of 15A to 20A Operating Temperatures : 10°C to +45°C. : -20°C to +60°C. : -20°C to +50°C. Safety Note If you need 15A continuous, add cooling or

The NCR21700T balancing act favors continuous power output alongside high capacity.

At 20°C ambient, the NCR21700T datasheet specifies a nominal capacity of 4.0 Ah to 4.2 Ah with a nominal voltage of 3.6V. The "hot" classification arises from its maximum continuous discharge rating: (depending on temperature cutoff settings). Unlike lower-impedance cells (e.g., Molicel P42A), the NCR21700T operates near its thermal limit at 20A. The datasheet explicitly warns that continuous discharge at >15A will elevate the cell surface temperature beyond 60°C , a critical threshold where cycle life degrades exponentially.

The NCR21700T includes internal safety features activated by heat or pressure: Abuse it, and you’ll learn firsthand why thermal

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While the NCR21700T is a high-capacity cell (4.8Ah), it is optimized for energy density rather than power density . If your application runs "hot" (drawing >10A continuously), this cell may require significant cooling. For high-drain, hot-running applications, a different cell chemistry (like high-drain INR types) may be more appropriate.

The "hot" performance of the NCR21700T is heavily dependent on temperature management. Operating outside these ranges can lead to thermal runaway or permanent capacity degradation.

The is a high-performance lithium-ion battery cell originally popularized as a primary component in Tesla Model 3 battery packs. While often difficult to find through official retail channels as a standalone consumer product, it is highly sought after in the DIY EV and flashlight communities for its balance of high capacity and discharge capability. Core Specifications