Panasonic Ncr21700t Datasheet Jun 2026

Limiting the charge voltage to 4.1V and avoiding deep discharges (above 3.0V) can double the total cycle life. Critical Safety and Temperature Thresholds

For consumer-grade NCR21700T cells, typical discharge ratings are:

Unlike some 21700 cells, the NCR21700T has . You must add external overcharge, overdischarge, and short-circuit protection when designing a battery pack.

As one verified vendor explains: “Tesla spec Panasonic 21700 batteries are of a higher spec than our Panasonic NCR21700T batteries. Tesla spec has a max discharge of 30 A, ours only has a max discharge of 10 A“. panasonic ncr21700t datasheet

Preventing draws higher than the rated continuous discharge limit.

The Panasonic NCR21700T requires a CC‑CV (Constant Current / Constant Voltage) charging algorithm, which is standard for lithium‑ion cells:

Cutting off power before the cell drops below 2.5V. Limiting the charge voltage to 4

Under , internal resistance causes "voltage sag." While the cell can handle these loads, sustained high-current draw increases internal temperature and reduces overall efficient runtime. 4. Lifecycle and Degradation

For mechanical design, the datasheet provides exact dimensions:

Before diving into complex charts, here are the headline specifications as listed in the Panasonic NCR21700T technical datasheet: As one verified vendor explains: “Tesla spec Panasonic

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Reaches ~775 Wh/l, making it ideal for compact battery packs.

These numbers confirm the NCR21700T as a cell. It is not a “high current” cell like the Samsung 40T (35A), but it excels in applications requiring long runtime with moderate power bursts.