Description
BAK 6S 22.2V 55000mAh (55Ah) Lithium-Ion Battery Pack | 6S11P 3C Ultra High Capacity Rechargeable Battery
The BAK 6S 22.2V 55000mAh (55Ah) 6S11P 3C Ultra High Capacity Lithium-Ion Battery Pack is a high-capacity NMC Lithium-Ion rechargeable battery pack designed for applications requiring high energy storage, reliable power delivery, and high discharge performance.
This battery pack uses BAK 3.7V 5000mAh 21700 lithium-ion cells arranged in a 6S11P configuration, providing 22.2V nominal voltage, 55Ah capacity, and approximately 1.22kWh nominal energy.
The 3C-rated cell configuration is suitable for high-power applications. The actual continuous and peak discharge capability depends on the selected BMS, cell specifications, interconnections, wiring, connectors, and thermal management.
Key Features
- Brand: BAK
- Battery Chemistry: NMC Lithium-Ion
- Configuration: 6S11P
- Nominal Voltage: 22.2V
- Maximum Charging Voltage: 25.2V
- Capacity: 55Ah / 55,000mAh
- Cell Capacity: 5000mAh
- Cell Size: 21700
- Cell Rating: 3C
- Total Cells: 66 cells
- Nominal Energy: Approx. 1.22kWh
- Ultra-high-capacity rechargeable battery
- Suitable for high-power applications
- Custom BMS options available
- Custom wires and connectors available
- Suitable for OEM and customized battery requirements
6S11P Battery Configuration
The battery pack consists of 6 series groups, with 11 cells connected in parallel in each group.
6S × 11P = 66 cells
Using 3.7V 5000mAh cells:
- Total cells: 6 × 11 = 66 cells
- Nominal voltage: 6 × 3.7V = 22.2V
- Maximum charging voltage: 6 × 4.2V = 25.2V
- Parallel capacity: 11 × 5Ah = 55Ah
- Nominal energy: 22.2V × 55Ah = 1,221Wh
- Total energy: Approximately 1.22kWh
3C Lithium-Ion Configuration
The cells are specified as 3C-rated. The complete battery pack’s actual safe discharge capability is determined by the BMS and overall electrical and thermal design rather than the cell C-rating alone.
The final current capability depends on:
- BMS continuous and peak current rating
- Cell discharge specifications
- Nickel/copper interconnection design
- Wire gauge
- Connector rating
- Thermal management
- Operating temperature
BMS Protection
A suitable 6S NMC BMS can provide:
- Overcharge protection
- Over-discharge protection
- Over-current protection
- Short-circuit protection
- Over-temperature protection
- Cell voltage monitoring
- Cell balancing
- Charging and discharging control
A Smart BMS can also be selected with Bluetooth, UART, RS485 or other communication options depending on the application.
Applications
The 22.2V 55Ah lithium-ion battery pack is suitable for:
- Robotics
- AGV/AMR systems
- Electric mobility equipment
- Industrial equipment
- Portable power systems
- Motorized equipment
- Backup power applications
- Custom electronic equipment
- High-capacity DC power applications
- OEM battery systems
Advantages
- 55Ah ultra-high capacity
- Approximately 1.22kWh nominal energy
- 6S11P configuration
- 3C-rated cell configuration
- BAK 21700 lithium-ion cells
- High-energy rechargeable battery solution
- Custom BMS options
- Custom connectors and wiring
- Suitable for OEM and bulk requirements
Package Includes
- 1 × BAK 6S11P 22.2V 55Ah Lithium-Ion Battery Pack
- BMS as specified/configured
- Output wires and connector as specified
- Battery insulation and protective packaging
Important Charging Information
For this 6S NMC battery pack, use a compatible 25.2V CC/CV Lithium-Ion battery charger. Do not use a charger designed for a different battery voltage or chemistry.
