The Panasonic NCR21700T is an . It does not feature a built-in electronic protection circuit board (PCB/PCM). Therefore, users must exercise strict caution:
For consumer-grade NCR21700T cells, typical discharge ratings are:
Multiple sources indicate that there are different versions of the NCR21700T in circulation:
(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.)
– Good for specific use, poor for general high-drain applications. panasonic ncr21700t datasheet
The cell offers a volumetric energy density of approximately 775 Wh/l and a gravimetric density of 263 Wh/kg , making it highly efficient for its weight and size.
): As the discharge rate increases, voltage sag becomes more pronounced, but the cell still delivers almost its full rated capacity, proving its capability to handle high-demand tools and e-bike motors. 4. Charging Guidelines
To help tailor this breakdown to your project, could you tell me a bit more about how you plan to use this cell? If you want, tell me: What is your ? What is the peak current draw of your application?
While rated for a maximum continuous discharge of 15A, thermal management is required at high currents. At a 15A draw, internal resistance causes Joule heating. Engineers must ensure the cell temperature does not exceed 60°C during continuous operation to prevent accelerated degradation. 3. Cycle Life and Longevity The Panasonic NCR21700T is an
A notable aspect of the is its scarcity as a standalone retail product. Industrial users note that "NCR21700T" is often a label used for cells salvaged from Tesla Model 3 packs. These cells may lack standard barcodes or retail wraps, frequently appearing as bare cans with visible wire-bond removals. Genuine cells are often sourced through specialty retailers like Daraz or AliExpress . NCR21700 data sheet
reservoir in a robust 21700 package. Designing within the guidelines laid out in this datasheet ensures safe operation, maximum lifecycle efficiency, and top-tier power performance.
At 21mm in diameter and 70mm in height, it is slightly larger than an 18650 but offers a significantly better ratio of weight to power. The Essay: The Silicon-Anode Frontier
Preferred by hobbyists requiring extreme runtime and high lumens. 6. Safety Guidelines and Handling The cell offers a volumetric energy density of
When designing or selecting battery solutions, it's essential to consult the datasheet and consider the specific requirements of your application. With the Panasonic NCR21700T, you can rely on a reputable manufacturer and a high-quality cell that meets the demands of today's energy-hungry applications.
Ensure the operating environment remains between 15°C and 25°C whenever possible. 5. Applications and Use Cases
4.20V (Constant Current/Constant Voltage - CC/CV) Typical Capacity: 4800mAh - 5000mAh Minimum Capacity: 4800mAh (at 20°C - 25°C) Maximum Continuous Discharge Current: (depending on cooling) Peak Discharge Current: Up to (with appropriate thermal management) Weight: Approximately 65g - 70g Chemistry: Nickel-Cobalt-Aluminum (NCA) 2. Key Performance Features
Frequently draining the cell completely down to 2.5V stresses the chemical structure. 5. Safety Protocols and Environmental Limits
Similar to the cells used in Tesla Model 3/Y packs (though Tesla uses proprietary variations). High-Power Tools:
The discharge curves provided in the Panasonic NCR21700T data sheet show a relatively flat discharge profile, which is characteristic of high-quality NCA chemistry. The voltage stays above