Features high volumetric energy density (~775 Wh/l), making it ideal for compact, high-capacity battery packs. Community & Usage Notes
| Parameter | Value | | :--- | :--- | | | NCR21700T | | Chemistry | Li-NCA (Lithium Nickel-Cobalt-Aluminum Oxide) | | Nominal Voltage | 3.6V - 3.7V | | Nominal Capacity | 4800mAh - 5000mAh | | Standard Charge | CC/CV, 2A (~4A) | | Max Charge Current | 5A - 9A (with adequate thermal management) | | Max Continuous Discharge | 25A - 45A (Confirmed at 30A, burst to 45A) | | Cut-off Voltage | 2.5V | | Internal Resistance (ACIR) | ≤15 mΩ (Typically 12-15 mΩ) | | Dimensions (Diameter x Height) | 21mm x 70mm | | Weight | 68g - 70g | | Cycle Life | 1000 cycles (to 70% capacity) | | Operating Temperature | -20°C to +60°C |
Panasonic NCR21700T Go to product viewer dialog for this item. Datasheet: High-Energy 5000mAh 21700 Cell Detailed Overview
| Specification | Details | | :--- | :--- | | Model | Panasonic NCR21700T | | Format | 21700 (21mm diameter, 70mm height) | | Nominal Voltage | 3.6V – 3.7V | | Capacity | 4800mAh – 5000mAh | | End of Charge Voltage | 4.20V ± 0.05V | | Discharge Cut‑off Voltage | 2.5V | | Standard Charge Current | 2A – 5A (CC‑CV) | | Max Continuous Discharge Current | 10A – 35A (source dependent) | | Pulse Discharge Current | 45A (for 5–6 seconds) | | Internal Resistance | ≤ 14mΩ (AC at 1000Hz) | | Cycle Life | > 1000 cycles (to 70% capacity) | | Weight | ≈ 68g – 70g | | Operating Temperature | Charge: 0°C to 45°C; Discharge: –20°C to 60°C | | Storage Temperature | –20°C to 60°C | | Protection Circuit (PCB) | Not integrated (must be used with external BMS) | panasonic ncr21700t datasheet hot
| Cell | Capacity | Nominal Voltage | Max Continuous Discharge | Cycle Life | Key Advantages | | :--- | :--- | :--- | :--- | :--- | :--- | | | 4800–5000mAh | 3.6–3.7V | 15A (35A pulse) | > 1000 cycles | Excellent energy density, very low IR, high reliability | | Samsung 50S | 5000mAh | 3.6V | 25A | 1000 cycles | Higher continuous discharge rating | | Samsung 50E | 5000mAh | 3.6V | 9.8A | 1000 cycles | Slightly lower max discharge, lower cost | | Molicel P45B | 4500mAh | 3.6V | 45A | > 1000 cycles | Extremely high discharge, ideal for high‑drain applications | | LG M50LT | 5000mAh | 3.6V | 14A | 1000 cycles | Good all‑round performance |
10°C to +45°C (Avoid charging when the cell is already hot). 4. Key Advantages of the
Capable of handling brief pulses up to 30A, provided the external surface temperature is strictly monitored and does not exceed the maximum limits specified in the datasheet. 3. Thermal Limits and Heat Generation ("Hot" Conditions) Features high volumetric energy density (~775 Wh/l), making
The ideal storage temperature is 10°C to 25°C at a 40-60% state of charge (~3.7V–3.8V). Key Applications: Why it’s "Hot" on the Market
Cylindrical cells experience internal resistance heating during high-current operations. Managing heat generation is essential for avoiding thermal runaway and preserving cell health. 0°C to +45°C Operating Temperature Range (Discharge): -20°C to +60°C
The datasheet specifies a Constant Current / Constant Voltage (CC/CV) charging protocol. Thermal Limits and Heat Generation ("Hot" Conditions) The
It supports continuous discharge rates typically ranging from 10A to 15A , with some pulse capabilities reaching higher under specific thermal management conditions.
While powerful, users should note that these are usually "flat-top" cells and may require specific adapters or spacers for use in standard consumer flashlights.