Description
BAK 3S 11.1V 40000mAh 3S8P 20A BMS 12V 40Ah Lithium-Ion NMC Battery Pack
The BAK 3S 11.1V 40000mAh 3S8P 20A BMS 12V 40Ah Lithium-Ion NMC Battery Pack is a high-capacity rechargeable 12V-class NMC lithium-ion battery designed for applications requiring reliable power and extended runtime.
Built with BAK lithium-ion cells in a 3S8P configuration, the pack contains 24 cells, arranged in 3 series groups with 8 cells connected in parallel in each group. With approximately 4500mAh cells, the battery provides 40Ah (40,000mAh) capacity.
The integrated 20A BMS provides essential protection against overcharge, over-discharge, over-current, and short-circuit conditions. This battery is suitable for portable power systems, robotics, electronics, backup systems, industrial equipment, and custom OEM applications.
Voltage note: A 3S NMC battery has a nominal voltage of 11.1V and a maximum charging voltage of 12.6V. It is commonly sold as a 12V-class lithium battery.
Key Features
- BAK NMC Lithium-Ion Cells
- 3S8P Configuration
- 11.1V Nominal Voltage
- 12V-Class Battery
- 40000mAh / 40Ah Capacity
- 20A BMS Included
- Rechargeable Lithium-Ion Battery
- Approximately 444Wh Energy
- Overcharge Protection
- Over-Discharge Protection
- Over-Current Protection
- Short-Circuit Protection
- High Energy Density
- Custom Connectors & Wiring Available
- Suitable for OEM Battery Pack Manufacturing
Battery Configuration
3S8P = 3 Series × 8 Parallel
- Series: 3S
- Parallel: 8P
- Total Cells: 24
- Capacity: 40Ah
- Nominal Voltage: 11.1V
- Maximum Charging Voltage: 12.6V
- Nominal Energy: Approximately 444Wh
- BMS: 20A NMC BMS
20A BMS Protection
The integrated 20A BMS is designed to help protect the battery against:
- Overcharge
- Over-discharge
- Over-current
- Short circuit
- Cell imbalance, depending on BMS design
The BMS should be appropriately matched to the application’s continuous and peak current requirements.
Applications
The BAK 12V-class 40Ah battery can be used for:
- Portable Power Systems
- Robotics
- Automation Equipment
- CCTV & Security Systems
- LED Lighting Systems
- Electronic Equipment
- Backup Power Systems
- Communication Equipment
- Industrial Equipment
- Custom OEM Applications
Advantages
- High-capacity 40Ah battery
- Reliable BAK NMC cells
- 3S8P configuration
- Integrated 20A BMS
- Approximately 444Wh energy
- Rechargeable design
- Multiple battery protection functions
- High energy density
- Custom battery pack options
- Suitable for OEM and bulk requirements
Package Includes
1 × BAK 3S 11.1V 40000mAh (40Ah) 3S8P 20A BMS 12V Lithium-Ion NMC Battery Pack
