Description
BAK 20S 72V 40000mAh (40Ah) 20S8P 3C Lithium-Ion Rechargeable Battery Pack
The BAK 20S 72V 40000mAh (40Ah) 20S8P 3C Lithium-Ion Rechargeable Battery Pack is a high-capacity lithium-ion battery solution designed for electric mobility, industrial equipment, robotics, and custom energy-storage applications. With a 72V nominal voltage and 40Ah capacity, this battery pack provides approximately 2.88 kWh of nominal energy, making it suitable for applications requiring extended operating range and dependable power delivery.
The battery is configured as 20S8P, combining 20 series-connected groups with 8 cells connected in parallel in each group. This configuration provides high system voltage while increasing battery capacity and current capability.
With the specified 3C discharge rating, a 40Ah battery has a theoretical discharge capability of approximately 120A, subject to the actual BAK cell specifications, BMS rating, thermal management, and pack construction.
Key Features
- 72V 40Ah high-capacity lithium-ion battery pack
- 40,000mAh nominal capacity
- 20S8P configuration
- Approximately 2.88 kWh nominal energy
- Specified 3C discharge capability
- Theoretical current capability of approximately 120A
- Designed for high-energy electric mobility applications
- Rechargeable lithium-ion technology
- Suitable for custom EV and industrial battery systems
- Compatible with a properly rated BMS and lithium-ion charger
Applications
The BAK 72V 40Ah Lithium-Ion Battery Pack is suitable for:
- Electric bikes and high-performance e-bikes
- Electric scooters
- Electric motorcycles
- Electric three-wheelers
- Electric utility vehicles
- EV conversion projects
- Robotics and automation
- Industrial equipment
- Portable power systems
- Custom lithium battery projects
- Energy-storage applications





