Panasonic Ncr21700t Datasheet Hot

Thanks to its blend of high capacity and respectable current handling, the Panasonic NCR21700T is found in a wide range of demanding applications.

: Approximately 21.1mm in diameter and 70.4mm in length (Flat top style). Thermal & Safety Characteristics

The cell is designed with advanced safety features, but operating at 20A+ continuously will require robust cooling systems. The nominal operating temperature range for discharge is . 3. Charging Recommendations To prolong the life of the Panasonic NCR21700T

The NCR21700T is a "hybrid" cell, offering both capacity and power. However, it is not primarily a ultra-high-drain cell (like the Molicel P42A or Samsung 40T). It gets "hot" when:

Heat increases resistance, which increases voltage drop. Under a 30A load, the 4.2V cell drops to 3.2V instantly. The device thinks the battery is dead (low voltage cut-off triggers), so it shuts down. You pull the battery out, it measures 3.8V, but it is scorching hot. Lower your load or use a lower-resistance cell like the Molicel P45B. panasonic ncr21700t datasheet hot

This article explores the technical datasheet of the Panasonic NCR21700T, specifically analyzing its specifications, performance, and thermal characteristics (how it handles "hot" or high-discharge conditions). 1. Technical Specifications of the Panasonic NCR21700T

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.

Before we talk about heat, let’s establish the baseline specs as released by Panasonic (now operating as Tesla/Panasonic joint venture).

Cylindrical cells experience internal resistance heating during high-current operations. Managing heat generation is essential for avoiding thermal runaway and preserving cell health. 0°C to +45°C Operating Temperature Range (Discharge): -20°C to +60°C Thanks to its blend of high capacity and

If your cell is currently hot, stop using it. Let it cool. Check your resistance. And remember: When a lithium-ion datasheet says "Max discharge: 35A," it means "At 25°C, with perfect airflow, for 30 seconds, you won't die." For the rest of us, 25A is the new 35A.

Capable of handling brief pulses up to 30A, provided the external surface temperature is strictly monitored and does not exceed the maximum limits specified in the datasheet. 3. Thermal Limits and Heat Generation ("Hot" Conditions)

The chemistry is stable, but high temperatures increase internal impedance, causing higher voltage sag, as shown in detailed thermal characterization reports (e.g., Batemo Cell Model ).

Calculate the for a specific device (like a 500W electric scooter) using this cell. The nominal operating temperature range for discharge is

The required by your application

Since the NCR21700T , it is an "unprotected" cell. This means you must use it with an external Battery Management System (BMS) or within a device that has built‑in protection.

Panasonic NCR21700T high-capacity lithium-ion cell typically rated at with a nominal voltage of