Description
Power Pack 7.4V 18000mAh 2S9P 1C BMS 20A Lithium-Ion Rechargeable NMC Battery Pack
The Power Pack 7.4V 18000mAh 2S9P 1C BMS 20A Lithium-Ion Rechargeable NMC Battery Pack is a high-capacity rechargeable battery solution designed for portable electronics, robotics, backup systems, lighting equipment, instruments, and other applications requiring a reliable 7.4V power source.
This battery pack uses 18650 NMC Lithium-Ion cells arranged in a 2S9P configuration, providing 7.4V nominal voltage and 18Ah capacity. The integrated 2S 20A BMS helps protect the battery during charging and discharging.
Custom wire lengths and connector configurations can be provided according to specific application requirements.
Key Features
- 7.4V nominal voltage
- 18000mAh / 18Ah capacity
- 2S9P cell configuration
- NMC Lithium-Ion chemistry
- 18650 rechargeable cells
- 2S 20A BMS
- 1C cell discharge configuration
- 5mm DC Jack / 2-Pin JST 54mm
- High-capacity rechargeable power pack
- Custom wire length available
- Suitable for OEM and custom applications
2S9P Battery Configuration
The battery pack contains 18 × 18650 NMC cells arranged in a 2S9P configuration.
- 2S: 2 cell groups connected in series
- 9P: 9 cells connected in parallel in each group
- Nominal voltage: 3.7V × 2 = 7.4V
- Capacity: 2000mAh × 9 = 18000mAh
- Total cells: 2 × 9 = 18 cells
- Maximum charge voltage: 8.4V
- Energy capacity: 7.4V × 18Ah = 133.2Wh
1C Lithium-Ion Configuration
The theoretical 1C current is calculated from the pack capacity:
18Ah × 1C = 18A
The 18A theoretical 1C current and 20A BMS rating are different specifications. The BMS rating does not automatically mean the pack should continuously deliver 20A. Actual operating current depends on the selected cells, BMS, wiring, connectors, temperature, and overall pack design.
BMS Protection
The integrated 2S 20A BMS helps provide protection against common battery fault conditions, including:
- Overcharge
- Over-discharge
- Over-current
- Short circuit
- Cell imbalance
Connector & Wire
- Connector: 5mm DC Jack / 2-Pin JST 54mm
- Standard Wire Length: 5cm
- Custom Wire Length: Available
- Connector and cable specifications can be customized according to application requirements.
Applications
Suitable for:
- Portable electronic equipment
- Robotics and robotic systems
- IoT equipment
- LED lighting systems
- CCTV and security equipment
- GPS equipment
- Portable instruments
- Communication equipment
- Backup power systems
- DIY electronics
- Custom electronic devices
- Portable power applications
Advantages
- High 18000mAh / 18Ah capacity
- Reliable 7.4V rechargeable power source
- 2S9P configuration
- NMC chemistry with good energy density
- Integrated 20A BMS protection
- Suitable for higher-capacity portable applications
- Custom wire and connector options
- Suitable for OEM and bulk requirements
Package Includes
- 1 × 7.4V 18000mAh 2S9P NMC Lithium-Ion Battery Pack
- 1 × 2S 20A BMS
- Connector and wires as specified
