Description
BAK 13S 48V 45000mAh (45Ah) 13S9P 3C Lithium-Ion Rechargeable Battery Pack
The BAK 13S 48V 45000mAh (45Ah) 13S9P 3C Lithium-Ion Rechargeable Battery Pack is a high-capacity NMC Lithium-Ion battery pack designed for electric vehicles, electric scooters, e-bikes, industrial equipment, robotics, and other high-energy applications.
This battery pack uses BAK 3.7V 5000mAh 21700 lithium-ion cells arranged in a 13S9P configuration, providing approximately 48V nominal voltage, 45Ah capacity, and approximately 2.16kWh nominal energy.
The 3C cell configuration provides high discharge capability. The actual safe discharge current of the complete battery pack depends on the selected BMS, cell specifications, busbars/interconnections, wiring, connectors, and thermal management.
Key Features
- Brand: BAK
- Battery Chemistry: NMC Lithium-Ion
- Configuration: 13S9P
- Nominal Voltage: 46.8V / commonly marketed as 48V
- Maximum Charging Voltage: 54.6V
- Capacity: 45Ah / 45,000mAh
- Cell Capacity: 5000mAh
- Cell Size: 21700
- Cell Rating: 3C
- Total Cells: 117 cells
- Nominal Energy: Approx. 2.16kWh
- High-capacity rechargeable battery pack
- Suitable for high-power applications
- Custom BMS options available
- Custom connectors, wires and enclosure options available
- Suitable for OEM and customized battery requirements
13S9P Battery Configuration
The battery pack consists of 13 series groups, with 9 cells connected in parallel in each group.
13S × 9P = 117 cells
Using 3.7V 5000mAh cells:
- Total cells: 13 × 9 = 117 cells
- Nominal voltage: 13 × 3.6V = 46.8V
- Maximum charging voltage: 13 × 4.2V = 54.6V
- Parallel capacity: 9 × 5Ah = 45Ah
- Nominal energy: 46.8V × 45Ah = 2,106Wh
- Total energy: Approximately 2.11kWh
3C Lithium-Ion Configuration
The cells are specified as 3C-rated. The complete pack’s actual continuous and peak current capability should be determined according to the selected BMS and complete pack design.
Key factors include:
- 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 13S 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, CAN, UART or RS485 communication depending on the application.
Applications
The 48V 45Ah lithium-ion battery pack is suitable for:
- Electric bicycles
- High-power e-bikes
- Electric scooters
- Electric motorcycles
- Electric carts
- Electric vehicles
- Industrial vehicles
- Robotics
- AGV/AMR systems
- Portable power systems
- Custom energy storage applications
Advantages
- 45Ah high-capacity battery
- Approximately 2.11kWh nominal energy
- 13S9P 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 13S9P 48V 45Ah Lithium-Ion Battery Pack
- BMS as specified/configured
- Output wires and connector as specified
- Battery insulation and protective packaging
Important Charging Information
For this 13S NMC battery pack, use a compatible 54.6V CC/CV Lithium-Ion battery charger. Do not use a charger intended for a different voltage or battery chemistry.
