21700 high-power Li-ion cell, 4400mAh nominal capacity and up to 60A continuous discharge (industrial applications).
Technical Specifications
| Model | BAK INR2170-45D 4400mAh High-Power Battery |
|---|---|
| Format | 21700 cylindrical |
| Nominal Capacity | 4500mAh (typical 4.4Ah) |
| Nominal Voltage | 3.6V |
| Continuous Discharge | up to 60A (high-power cell) |
| Brand | BAK |
| Chemistry | NMC Li-ion |
Safety Warning
Unprotected industrial cell. Always use with a properly designed BMS and matching load. Never short-circuit or overcharge. Keep away from fire and extreme heat. Not for use in e-cigarettes or similar consumer devices.
Cell Specification
| Item | Specification and comments |
|---|---|
| Model | INR2170-45D – high-power cylindrical lithium-ion rechargeable cell |
| Nominal capacity | 4500mAh (4.4Ah) – capacity at 0.2C discharge down to around 2.5V at 25°C |
| Minimum capacity | ≈4400mAh (typical minimum for 4.4Ah class high-power cells) |
| Nominal voltage | 3.6V |
| Standard charge | CCCV ~0.5C (≈2.2A) to 4.20V, with cut-off at low current |
| Maximum charge current | up to 1C (≈4.4A) with appropriate thermal management |
| Standard discharge current | 0.2C (≈0.88A) for capacity rating |
| Maximum continuous discharge | up to 60A continuous (high-power use; pack must stay within datasheet limits) |
| Discharge cut-off voltage | ≈2.5V (recommended end-of-discharge under normal use) |
| Approx. dimensions | Diameter ≈21.3mm, height ≈70.5mm (21700 format high-power cell) |
| Approx. weight | ≈69g (typical mass for BAK 45D) |
| Operating temperature (charge) | 0~55°C (cell surface) |
| Operating temperature (discharge) | -20~80°C (cell surface, depending on application and cooling) |
| Storage temperature | -20~25°C for long-term storage; higher temperatures acceptable for shorter periods if SoC is reduced |
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