Description
BAK 6S 22.2V 70000mAh (70Ah) Lithium-Ion Battery Pack | 6S14P 3C Ultra High Capacity Rechargeable Battery
The BAK 6S 22.2V 70000mAh (70Ah) Lithium-Ion Battery Pack is a high-capacity NMC lithium-ion rechargeable battery pack configured in 6S14P, using BAK 21700 5000mAh cells.
With a 22.2V nominal voltage and 70Ah capacity, this battery provides approximately 1554Wh (1.55kWh) of nominal energy, making it suitable for applications requiring extended runtime and high-capacity rechargeable power.
The 6S14P configuration contains 84 individual 21700 cells, arranged as 6 series groups with 14 cells connected in parallel in each group.
Key Features
- Brand: BAK
- Battery Chemistry: NMC Lithium-Ion
- Cell Type: 21700 cylindrical
- Cell Capacity: 5000mAh
- Configuration: 6S14P
- Nominal Voltage: 22.2V
- Maximum Charge Voltage: 25.2V
- Capacity: 70000mAh / 70Ah
- Nominal Energy: Approximately 1554Wh
- Total Cells: 84
- Cell Discharge Rating: Up to 3C*
- High-capacity rechargeable battery design
- Suitable for custom BMS and connector configurations
6S14P Battery Configuration
The pack uses 84 BAK 21700 cells:
- 6 cells/groups in series = 6S
- 14 cells in parallel per group = 14P
- Total cells = 6 × 14 = 84 cells
- Capacity = 14 × 5Ah = 70Ah
- Nominal voltage = 6 × 3.7V = 22.2V
- Maximum charge voltage = 6 × 4.2V = 25.2V
- Nominal energy = 22.2V × 70Ah = 1554Wh
3C Lithium-Ion Configuration
Based on a theoretical 3C calculation:
70Ah × 3C = 210A
This 210A figure is not automatically the rated continuous output of the finished battery pack. The practical current rating must be determined by the selected BMS, cell specifications, busbars/nickel interconnects, wiring, connectors and thermal design.
BMS Protection
A suitable 6S NMC BMS can provide:
- Overcharge protection
- Over-discharge protection
- Over-current protection
- Short-circuit protection
- Over-temperature protection
- Cell balancing
- Charging and discharging protection
For high-current applications, the BMS should be selected according to the required continuous and peak load.
Applications
The BAK 6S 22.2V 70Ah battery pack is suitable for:
- Electric vehicles
- Electric scooters
- Robotics
- Portable power systems
- Industrial equipment
- Backup power systems
- Custom EV projects
- High-capacity DC power systems
- DIY lithium battery projects
- Engineering and OEM applications
Advantages
- 70Ah high-capacity configuration
- Approximately 1.55kWh nominal energy
- Uses 21700 cylindrical cells
- 6S14P configuration for high capacity
- Suitable for long-runtime applications
- Rechargeable NMC lithium-ion technology
- Compatible with custom BMS configurations
- Suitable for OEM and custom battery-pack requirements
Package Includes
- 1 × BAK 6S14P 22.2V 70Ah Lithium-Ion Battery Pack
- BMS according to selected configuration
- Battery interconnects and wiring
- Output connector according to requirement
Important Charging Information
Use a 25.2V lithium-ion charger designed specifically for a 6S NMC battery pack.
Do not use a LiFePO4 charger or a charger designed for another series configuration. Always use an appropriately rated BMS and charger.
