SPIDER Automation BAK NMC 21700 Lithium-Ion Battery Cell | 3.6V & 5000mAh | 18Wh & 4.20V Charge Voltage
Description
The SPIDER Automation BAK NMC 21700 Lithium-Ion Battery Cell is a compact cylindrical rechargeable battery cell designed for applications requiring a 3.6V nominal voltage and high energy capacity. The cell provides a 5000mAh nominal capacity with a specified energy rating of 18Wh, making it suitable for compatible battery systems requiring a high-capacity single-cell solution.
The supplied specifications identify a 4.20V charge voltage and a 2.50V discharge cut-off voltage. The cell supports a maximum charging current of 1C at 25°C, with the supplied specification noting that this rating is not for cycle-life evaluation.
The battery has a specified internal resistance of ≤30mΩ and a maximum specified weight of ≤70g. The supplied product information also identifies high energy density, high working voltage for a single battery cell, good consistency and low self-discharge as product characteristics.
The cell uses a cylindrical 21700 format with a flat-top configuration. Its compact construction, high capacity and defined electrical characteristics make it suitable for compatible custom battery packs, portable electronics, power systems and other rechargeable lithium-ion applications.
Key Features
- 5000mAh Nominal Capacity: Provides the specified 5Ah capacity for compatible rechargeable battery applications.
- 18Wh Energy: Provides the specified energy rating of the cell.
- 3.6V Nominal Voltage: Provides the specified nominal voltage for compatible lithium-ion systems.
- 4.20V Charge Voltage: Defines the specified charging voltage for the cell.
- 2.50V Discharge Cut-Off Voltage: Defines the specified lower discharge-voltage limit.
- 1C Maximum Charging Current: Defines the maximum specified charging current at 25°C under the supplied conditions.
- ≤30mΩ Internal Resistance: Specifies the supplied internal resistance characteristic of the cell.
- Cylindrical 21700 Format: Provides a compact cylindrical battery-cell format for compatible applications.
- Flat-Top Configuration: Suitable for compatible devices and battery-pack assemblies requiring a flat-top cell.
- High Energy Density: The supplied product information identifies high energy density as a cell characteristic.
- Good Consistency: The supplied information identifies good consistency across capacity, resistance, voltage and platform-time characteristics.
- Low Self-Discharge: The supplied product information identifies low self-discharge as a characteristic.
Benefits
- High Energy Capacity: The 5000mAh capacity and 18Wh energy rating provide substantial stored energy for compatible applications.
- Defined Charging Parameters: The specified 4.20V charge voltage and 1C maximum charging current provide clear charging parameters for system design.
- Defined Discharge Limit: The 2.50V discharge cut-off voltage provides a specified lower voltage limit for the cell.
- Controlled Electrical Characteristic: The ≤30mΩ internal resistance provides a defined parameter for cell selection and system design.
- Compact Cylindrical Format: The 21700 form factor supports integration into compatible battery packs and electronic equipment.
- Practical Battery-Pack Configuration: The flat-top design supports compatible battery-pack and device configurations.
Applications
- Custom Battery Packs: Suitable for compatible rechargeable lithium-ion battery-pack assemblies.
- Portable Electronics: Can be integrated into compatible portable electronic equipment requiring a 21700 cell.
- Power Banks: Suitable for compatible rechargeable portable power systems.
- Battery Modules: Suitable for compatible battery-module designs using cylindrical lithium-ion cells.
- Electronic Equipment: Provides rechargeable power for compatible electronic systems.
- Power Systems: Can be integrated into compatible battery-powered electrical systems according to their specified requirements.
- Other Compatible Applications: Suitable for systems requiring the supplied voltage, capacity and charging characteristics.
Package Includes
- 1 × BAK NMC 21700 5000mAh (3C) Lithium-Ion 3.6V Battery
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | BAK |
| Model | NMC 21700 |
| Battery Chemistry | NMC Lithium-Ion |
| Battery Type | Lithium-Ion Battery |
| Cell Format | Cylindrical 21700 |
| Terminal Configuration | Flat Top |
| Nominal Capacity | 5000mAh |
| Watt-Hours | 18Wh |
| Nominal Voltage | 3.60V |
| Charge Voltage | 4.20V |
| Discharge Cut-Off Voltage | 2.50V |
| Maximum Charging Current | 1C at 25°C (not for cycle life) |
| Humidity Range | 0 to 60% RH |
| Internal Resistance | ≤30mΩ |
| Weight | ≤70g |
| Shipping Weight | 0.07 kg |
| Shipping Dimensions | 7 × 3 × 3 cm |
Installation & Usage Notes
- Verify Electrical Requirements: Confirm that the cell voltage, capacity, charging and discharge characteristics are suitable for the intended battery system before integration.
- Charging Voltage: Use the specified 4.20V charge voltage when designing the compatible charging system.
- Charging Current: Do not exceed the specified 1C maximum charging-current rating under the stated conditions.
- Discharge Cut-Off: The supplied specification identifies 2.50V as the discharge cut-off voltage.
- Battery-Pack Integration: Cell assembly and battery-pack integration should follow appropriate lithium-ion battery handling and system-design practices.
- Follow Datasheet Guidance: Refer to the manufacturer datasheet for detailed charging, safety, handling and performance requirements.
