21700 Li-ion cell, 5300mAh nominal capacity and 10A continuous discharge.
Technical Specifications
| Model | BAK N21700CD-53E 5300mAh 10A Battery |
|---|---|
| Format | 21700 cylindrical |
| Nominal Capacity | 5300mAh |
| Nominal Voltage | 3.6V |
| Continuous Discharge | 10A (energy-focused cell) |
| Brand | BAK |
| Chemistry | NMC Li-ion |
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 |
|---|---|
| Model | N21700CD-53E – cylindrical lithium-ion rechargeable cell |
| Nominal capacity | 5300mAh – standard charge and 0.2C discharge to about 2.5V at 25°C |
| Minimum capacity | ≈5200mAh (typical minimum for 5.3Ah class cells) |
| Nominal voltage | 3.6V |
| Standard charge | CCCV, around 0.5C (≈2.65A) to 4.20V, cut-off at low current |
| Maximum charge current | up to 1C (≈5.3A) with appropriate thermal management |
| Standard discharge current | 0.2C (≈1.06A) for capacity rating |
| Maximum continuous discharge | 10A (energy cell, not high-power type) |
| Discharge cut-off voltage | ≈2.5V (recommended end-of-discharge) |
| Approx. dimensions | 21mm diameter × 70mm length (21700 format) |
| Approx. weight | ≈70g (typical for high-capacity 21700) |
| Operating temperature (charge) | 0~45°C (cell surface) |
| Operating temperature (discharge) | -20~60°C (cell surface) |
| Storage temperature | -20~25°C for long-term storage; higher temperatures allowed for shorter periods |
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