Panasonic Ncr21700t Datasheet ((full)) Jun 2026

Never carry loose cells in a pocket; always use a plastic case to prevent short circuits. If you are designing a project with these, I can help you:

With a capacity nearing 5000mAh in a 21700 form factor, this cell offers one of the best volumetric and gravimetric energy densities in the market, calculated at approximately

The NCR21700T is exceptionally versatile and a top choice for many popular devices:

The balance of high capacity and solid high-current capability makes the NCR21700T highly versatile across multiple demanding industries:

The cell includes an integrated PTC (Positive Temperature Coefficient) resistor that increases resistance during temperature spikes to prevent short-circuits, alongside a built-in safety valve to relieve internal pressure. Charging and Storage Guidelines panasonic ncr21700t datasheet

Light electric vehicles (LEVs), e-bikes, electric scooters, and advanced micro-mobility platforms utilize these cells to maximize range while staying within strict volume constraints.

Cordless drills, saws, and grinders require the cell's sustained 15A capability.

The 21700 designation refers directly to the mechanical dimensions of the cylindrical cell: Represents a diameter of 21 millimeters. 70: Represents a length of 70 millimeters. 0: Explains the standard cylindrical shape.

The table below represents the most consistent technical data gathered from multiple industry sources and independent verified reports. While slight variations exist, particularly regarding capacity and discharge ratings, the following values represent the authoritative consensus. Never carry loose cells in a pocket; always

Solar backup banks and home energy storage units leverage the stable chemistry for multi-cell packs.

The discharge should be terminated at 2.5V to avoid permanent cell degradation.

It is crucial to distinguish the "T" variant from high-power cells like the Panasonic "PF" or "M" series or high-drain cells used in vaping/power tools.

-20°C to 20°C (At roughly 40-50% State of Charge) Cordless drills, saws, and grinders require the cell's

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

For longest life, stay ≤10A. For occasional 15A bursts (e.g., power tools), the cell performs admirably.

Offers better thermal stability and capacity retention than standard cobalt-only cells.

Temperature must not exceed 60°C during high-current continuous discharge. Internal Resistance and Cycle Life Internal Impedance