Panasonic Ncr21700t Datasheet Jun 2026

Vendor documentation explicitly warns: “The integrated protection circuit (PCM) is not present, so it should only be used with suitable protection electronics“.

. This translates to lighter, more compact battery packs that last longer between charges. B. High Discharge Capabilities

When integrating the NCR21700T into a project, the electrical and physical limits defined by the manufacturer must be strictly observed. Below is the data compiled from the official Panasonic datasheet. Electrical Characteristics Specification Typical capacity at standard discharge Minimum Capacity Guaranteed minimum rating Nominal Voltage 3.6V – 3.7V Mid-point of the discharge cycle Charging Voltage 4.20V ± 0.03V Maximum safe upper voltage limit Discharge Cut-off Voltage Minimum safe lower voltage limit Standard Charging Current 1.5A to 2.4A Recommended for maximum cycle life Max Continuous Discharge Current 10A to 15A Dependent on thermal management Physical Dimensions & Weight Diameter: 21.1 mm (Maximum) Length: 70.4 mm (Maximum) Weight: Approximately 68.0 grams Terminal Type: Flat top (Unprotected industrial cell) 3. Charging and Discharging Behavior Standard Charge Profile

The NCR21700T is a cylindrical lithium-ion cell utilizing the 21700 form factor (21 mm diameter, 70 mm length). Developed by Panasonic, a pioneer in battery technology, this cell features a Nickel Cobalt Aluminium Oxide (NCA) chemistry. This specific formulation allows the battery to achieve high capacity while maintaining a stable thermal profile. Key Highlights:

Once the cell terminal voltage hits

Avoid storing or discharging the cell in environments exceeding 45°C.

The unique balance of high capacity (4800mAh) and moderate-to-high current draw makes the NCR21700T a versatile workhorse for several industries:

Before we get into the weeds, here is what the datasheet promises:

| Parameter | Value | |-----------|--------| | Diameter | 21.0 mm ±0.2 mm | | Height | 70.0 mm ±0.3 mm | | Weight (approx.) | 68 g | panasonic ncr21700t datasheet

Lithium-ion chemistries require strict environmental boundaries to operate safely. The NCR21700T datasheet specifies strict temperature windows for different operational states: 0°C to +45°C Discharge Temperature: -20°C to +60°C Storage Temperature: -20°C to +50°C (less than 1 month) Safety Warnings

The cell utilizes a standard Constant Current / Constant Voltage (CC/CV) charging method.

The most plausible explanation is that while Panasonic does manufacture cells for Tesla under the 21700 form factor, the NCR21700T sold to consumers is a than the cells Tesla integrates into its vehicle packs. As one vendor states: “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“.

German battery forum discussions note that while the cell can theoretically handle 30 A discharge currents, the usable energy drops significantly when discharged at higher rates, particularly if the cut‑off voltage is set above 3.0 V. In other words, the cell is high‑capacity but not truly high‑power; pushing it beyond its rated continuous current will result in diminished performance and potentially reduced service life. 70 mm length). Developed by Panasonic

When designing battery packs using the NCR21700T, engineers must integrate robust protection mechanisms:

Panasonic NCR21700T Datasheet: A Deep Dive into High-Capacity 21700 Lithium-Ion Battery Performance

If you want, I can: