Panasonic Ncr21700t Datasheet Here
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The Panasonic NCR21700T is a benchmark lithium-ion cell that, despite its elusive official documentation, has proven its performance in numerous critical applications. For engineers, it represents a known quantity with a high energy density and a strong track record. For hobbyists, it is a powerful and accessible component for DIY projects.
A mandatory hardware or software BMS must monitor individual cell voltages to prevent overcharging (>4.25V) and over-discharging (
Cycle life is highly dependent on Depth of Discharge (DoD) and ambient temperature. panasonic ncr21700t datasheet
(Note: Designers must account for the natural swelling of the cell—up to 10-15% expansion in diameter—over its lifetime when designing battery packs.)
The cell utilizes a standard Constant Current / Constant Voltage (CC/CV) charging profile.
When evaluating the Panasonic NCR21700T against other popular 21700 cells, it is important to focus on its energy‑oriented design: I can provide specific or thermal management advice
This comprehensive guide serves as an expanded, highly technical datasheet and application analysis for the Panasonic NCR21700T lithium-ion cell. It breaks down the manufacturer specifications, internal chemistry, performance metrics, and safety protocols required for modern engineering integration. 1. Overview of the 21700 Form Factor
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:
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 For hobbyists, it is a powerful and accessible
The shift toward high-capacity, high-drain electronics has made the 21700 lithium-ion battery format an industry standard. Among the top-tier cells in this category is the Panasonic NCR21700T. Known for its exceptional balance of energy density and reliable discharge capabilities, this cell is a staple in electric vehicles, power tools, and custom battery packs.
| Parameter | Specification | | :--- | :--- | | | NCR21700T | | Chemistry | Li-ion (NCA - Nickel Cobalt Aluminum) | | Nominal Capacity | 5000 mAh (5.0 Ah) | | Minimum Capacity | 4850 mAh | | Nominal Voltage | 3.6 V – 3.7 V | | Maximum Voltage | 4.2 V | | Cut-off Voltage | 2.5 V | | Maximum Continuous Discharge | 10 A (Typical recommended) | | Maximum Pulse Discharge | 15 A – 20 A (Short duration) | | Weight | Approx. 70g | | Dimensions | Diameter: 21.1mm | Height: 70.3mm | | Operating Temp (Charge) | 0°C to +45°C | | Operating Temp (Discharge) | -20°C to +60°C |
. This is roughly 40% more than the maximum capacity of the older 18650 standard. Voltage Range: Operates at a 3.6V nominal voltage , with a charging peak of . It is critical to never discharge below to avoid permanent internal damage. Energy Density: It packs a punch with (volumetric) and
According to technical data from NCR21700 Data Sheet and BDtronics : Specification Size 21700 (21.1mm x 70.4mm) Nominal Capacity 4800mAh to 5000mAh Nominal Voltage Maximum Voltage Discharge Cut-off Continuous Discharge 10A to 30A (varies by source/load conditions) Pulse Discharge Cycle Life ~500 to 1000+ cycles (at 80% capacity) Approximate Weight 65g to 69g Key Performance Highlights