Great power INR21700-4600D 13.8A
Great power INR21700-4600D 13.8A. High-performance cell for demanding battery packs and DIY builds.
Technical Specifications
| Model | Great power INR21700-4600D 13.8A |
| Format | 21700 |
| Nominal Capacity | |
| Discharge Current | 13.8A |
| Brand | Great |
Safety Warning
Unprotected cell. Always use with a BMS. Never short-circuit or overcharge. Keep away from fire and extreme heat. Not for use in e-cigarettes or similar devices.
Cell Specification
| Item | Specification and comments |
|---|---|
| Nominal Capacity | 4600mAh – 0.2C standard discharge |
| Minimum Capacity | 4500mAh |
| Nominal Voltage | 3.6V – mean operation voltage |
| Delivery Voltage | 3.70–3.80V (within 10 days from factory) |
| Limited Charge Voltage | 4.2V – correct charging voltage |
| Upper Limited Charge Voltage | 4.2V |
| Standard Charging Method | 0.2C constant current, 4.2V constant voltage charge to 4.2V, continue charging till current ≈0.01C (about 6h) |
| Fast Charge Current | 0.5C (2300mA) – rapid charge, about 3h (ref.) |
| Standard Discharging Method | 0.2C constant current discharge to 2.75V |
| Discharge Termination Voltage | 2.75V – correct discharging voltage |
| Cell AC Internal Impedance | ≈25mΩ (without PTC) – AC 1kHz after 50% charge |
| Weight | ≈69g |
| Maximum Charge Current | 1C (4600mA) – not for cycle |
| Maximum Discharge Current | 3C (13800mA) – not for cycle |
| Operation Temperature – Charge | 0–45°C, 60±25% RH – low-temperature charge reduces efficiency and life; charging below 0°C is prohibited |
| Operation Temperature – Discharge | -20–65°C, 60±25% RH |
| Storage Temperature ≈12 months | -20–25°C, 60±25% RH |
| Storage Temperature ≈3 months | 25–45°C, 60±25% RH |
| Storage Temperature ≈1 month | 45–60°C, 60±25% RH |
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