18650 Li-ion cell, 4000mAh nominal capacity and 12A continuous discharge for energy-focused packs.
Technical Specifications
| Model | Great power 18650 4000mAh 12A |
|---|---|
| Format | 18650 cylindrical |
| Nominal Capacity | 4000mAh |
| Nominal Voltage | 3.6V |
| Continuous Discharge | 12A |
| Brand | Great Power |
| Chemistry | NMC Li-ion (energy cell) |
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
Operating temperature (discharge)-20~60°C
Storage temperature-20~25°C for extended storage
| Item | Specification and comments |
|---|---|
| Model | 18650 4000mAh 12A – cylindrical Li-ion energy cell |
| Nominal capacity | 4000mAh – standard charge and 0.2C discharge to ~2.5V at 25°C |
| Nominal voltage | 3.6V |
| Standard charge | CCCV, around 0.5C (2A) to 4.2V, cut-off at low current |
| Maximum charge current | up to 1C (4A) with appropriate thermal management |
| Standard discharge current | 0.2C (0.8A) for capacity rating |
| Maximum continuous discharge | 12A at room temperature |
| Discharge cut-off voltage | ≈2.5V |
| Approx. dimensions | 18mm × 65mm (18650 format) |
| Approx. weight | ≈48g |
| Operating temperature (charge) | 0~45°C |
| Operating temperature (discharge) | -20~60°C |
| Storage temperature | -20~25°C for extended storage |
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