The Panasonic NCR21700T is a high-performance 21700 lithium-ion cell frequently cited for its balance of high capacity and substantial discharge capability, though it is often noted as being sourced from electric vehicle battery packs (like the Tesla Model 3) rather than being sold as a standalone retail product by Panasonic. Key Specifications Full Product Name: Panasonic NCR21700T Lithium-Ion Battery Nominal Capacity: 4800mAh to 5000mAh Nominal Voltage: 3.6V – 3.7V Maximum Charge Voltage: 4.2V
Voltage: 3.6V (nominal), 4.2V (max charge), and 2.5V (discharge cut-off). panasonic ncr21700t datasheet hot
against other high-current 21700 cells like the Molicel P45B or Samsung 50S? Panasonic NCR2170-M Battery Data, Model and Report Warning: Charging below 0°C can cause lithium plating,
Practical takeaway: If your device feels "too hot to hold" (approx. 55°C), the cell is already past its comfort zone. The datasheet "hot" rating is for engineering tolerance, not for human comfort. Voltage: 3
Availability: Because Panasonic primarily supplies these to OEMs like Tesla, official retail datasheets can be elusive. Many users rely on community-tested models and digital twins from providers like Batemo for precision engineering.
Conclusion
The datasheet does not lie, but it does require interpretation. The Panasonic NCR21700T gets hot because it pushes high capacity into a chemistry that does not handle 35A gracefully. It is a 4500mAh battery that performs like a 3500mAh battery at high drain due to thermal throttling.