Description
Power Pack 11.1V 18000mAh 3S9P 1C BMS 20A Lithium-Ion Rechargeable NMC Battery Pack
The Power Pack 11.1V 18000mAh 3S9P 1C BMS 20A Lithium-Ion Rechargeable NMC Battery Pack is a high-capacity rechargeable battery solution designed for applications that require reliable 11.1V power with extended operating time. Built using 18650 NMC lithium-ion cells, this battery pack provides a large 18Ah capacity in a 3S9P configuration.
The battery pack consists of 27 individual 18650 cells, arranged as 3 cells in series and 9 cells in parallel. This configuration provides a nominal voltage of 11.1V and a maximum charging voltage of 12.6V, with an energy capacity of approximately 199.8Wh.
A 3S 20A BMS (Battery Management System) is integrated into the pack to provide essential battery protection and monitoring. The BMS helps protect against overcharge, over-discharge, over-current and short-circuit conditions.
With its high capacity and rechargeable design, this battery pack is suitable for portable electronics, robotics, CCTV systems, lighting equipment, backup power, IoT devices, industrial equipment and custom OEM applications.
Key Features
- Battery Chemistry: NMC Lithium-Ion
- Cell Type: 18650
- Configuration: 3S9P
- Nominal Voltage: 11.1V
- Maximum Charge Voltage: 12.6V
- Capacity: 18000mAh / 18Ah
- Energy Capacity: Approx. 199.8Wh
- Total Cells: 27
- Cell Capacity: 2000mAh
- Cell Discharge Rating: 1C
- Theoretical 1C Current: 18A
- BMS: 3S 20A
- Rechargeable lithium-ion battery
- High-capacity design for longer runtime
- Suitable for custom applications
- Custom wire length and connector options available
3S9P Battery Configuration
The battery pack uses a 3S9P configuration consisting of 27 × 18650 NMC cells.
- 3S: Three cell groups connected in series
- 9P: Nine cells connected in parallel in each group
- Total Cells: 3 × 9 = 27 cells
- Cell Capacity: 2000mAh
- Parallel Group Capacity: 9 × 2000mAh = 18000mAh
- Nominal Pack Voltage: 3 × 3.7V = 11.1V
- Maximum Charge Voltage: 3 × 4.2V = 12.6V
- Pack Energy: 11.1V × 18Ah = 199.8Wh
1C Lithium-Ion Configuration
The battery pack has a capacity of 18Ah and the cells are rated at 1C.
Theoretical 1C Current:
18Ah × 1C = 18A
The 20A BMS rating should not be considered the same as the cell’s continuous discharge capability. Actual safe operating current depends on the cells, BMS, nickel strip/interconnections, wiring, connectors and thermal management.
BMS Protection
The integrated 3S 20A BMS helps protect the battery pack from common operating faults, including:
- Overcharge protection
- Over-discharge protection
- Over-current protection
- Short-circuit protection
- Cell voltage monitoring
- Battery safety management
The BMS helps improve the safety and reliability of the battery during charging and discharging.
Connector & Wire
The standard battery pack can be supplied with:
- 5mm DC Jack
- 2-Pin JST connector
- JST Cable Length: 54mm
- Standard Wire Length: 5cm
- Custom Wire Length: Available
Connector and cable specifications can be customized according to the customer’s equipment and application requirements.
Applications
The 11.1V 18Ah battery pack is suitable for a wide range of applications, including:
- Portable electronic equipment
- Robotics
- CCTV and security systems
- LED lighting systems
- IoT equipment
- Portable instruments
- Industrial electronics
- Backup power systems
- Monitoring equipment
- Communication equipment
- DIY electronics projects
- Custom OEM equipment
- Portable power applications
Advantages
- 18Ah high-capacity battery pack
- 3S9P configuration provides increased capacity
- Approx. 199.8Wh energy
- Rechargeable NMC lithium-ion technology
- Integrated 3S 20A BMS
- 11.1V nominal voltage
- 12.6V maximum charging voltage
- Suitable for longer-runtime applications
- Custom connectors and wire lengths available
- Suitable for OEM and customized battery requirements
Package Includes
- 1 × 11.1V 18000mAh 3S9P NMC Lithium-Ion Battery Pack
- 1 × 3S 20A BMS
- 5mm DC Jack / 2-Pin JST connector
- 5cm standard wire
