Description
Power Pack 3.7V 4000mAh 1S2P 1C BMS 2A Lithium-Ion Rechargeable NMC Battery Pack
The Power Pack 3.7V 4000mAh 1S2P 1C BMS 2A Lithium-Ion Rechargeable NMC Battery Pack is a compact rechargeable battery solution designed for portable electronics, IoT devices, LED systems, small instruments, backup applications, and custom electronic equipment.
This battery pack uses 18650 NMC Lithium-Ion cells arranged in a 1S2P configuration, providing 3.7V nominal voltage and 4000mAh (4Ah) capacity. The integrated 1S 2A BMS helps protect the battery during charging and discharging.
Key Features
- 3.7V nominal voltage
- 4000mAh / 4Ah capacity
- 1S2P cell configuration
- NMC Lithium-Ion chemistry
- 18650 rechargeable cells
- 1S 2A BMS
- 1C cell discharge configuration
- 5mm DC Jack / 2-Pin JST 54mm
- Compact battery design
- Custom wire length available
- Suitable for OEM and custom applications
1S2P Battery Configuration
This battery contains 2 × 18650 NMC cells arranged in a 1S2P configuration.
- 1S: One cell group
- 2P: Two cells connected in parallel
- Total cells: 2 cells
- Nominal voltage: 3.7V
- Capacity: 2000mAh × 2 = 4000mAh / 4Ah
- Maximum charge voltage: 4.2V
- Energy capacity: 3.7V × 4Ah = 14.8Wh
1C Lithium-Ion Configuration
The theoretical 1C current is:
4Ah × 1C = 4A
The 4A theoretical 1C current is separate from the 2A BMS rating. The 2A BMS limits the battery system according to its own protection/current specification.
Actual operating current depends on the cells, BMS, wiring, connectors, temperature, and application.
BMS Protection
The integrated 1S 2A BMS helps protect the battery pack against common operating 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 devices
- IoT equipment
- LED lighting
- CCTV and security equipment
- GPS equipment
- Portable instruments
- Communication equipment
- Small robotics
- Backup power systems
- DIY electronics
- Custom electronic equipment
Advantages
- Compact 3.7V rechargeable power solution
- 4000mAh / 4Ah capacity
- 1S2P configuration
- NMC chemistry with good energy density
- Integrated 2A BMS protection
- Approx. 14.8Wh energy capacity
- Custom wire and connector options
- Suitable for OEM and bulk requirements
Package Includes
- 1 × 3.7V 4000mAh 1S2P NMC Lithium-Ion Battery Pack
- 1 × 1S 2A BMS
- Connector and wires as specified
