The 12V 10A LiFePO₄ 4S BMS with Battery Pack is a complete 12.8V rechargeable battery solution that includes four 3.2V LiFePO₄ cells and a 4S 10A Battery Management System (BMS). The integrated BMS provides overcharge, over-discharge, overcurrent, short-circuit, and cell balancing protection, making it ideal for solar energy storage, UPS systems, robotics, LED lighting, portable power supplies, DIY battery packs, and backup power applications.
Features
- Full Name: 12.8V 10A 4S LiFePO₄ Battery Pack with BMS
- Includes four 3.2V LiFePO₄ cells
- Integrated 4S 10A BMS protection board
- Built-in cell balancing
- Long cycle life (up to 2000+ cycles)
- High safety and thermal stability
- Lightweight and maintenance-free
- Ready for custom battery pack assembly
Specifications
| Specification | Value |
|---|---|
| Product Type | LiFePO₄ Battery Pack with BMS |
| Battery Chemistry | Lithium Iron Phosphate (LiFePO₄) |
| Battery Configuration | 4S (4 Cells in Series) |
| Nominal Voltage | 12.8V |
| Full Charge Voltage | 14.6V |
| Number of Cells | 4 |
| BMS Rating | 10A Continuous |
| Cell Balancing | Yes |
| Protection Features | Overcharge, Over-discharge, Overcurrent, Short Circuit |
| Cycle Life | Up to 2000–4000 Cycles (Typical) |
| Operating Temperature | Charging: 0°C to +45°C, Discharging: -20°C to +60°C |
BMS Connection
| Terminal | Description |
|---|---|
| B− | Battery Pack Negative |
| B1 | Cell 1 Positive |
| B2 | Cell 2 Positive |
| B3 | Cell 3 Positive |
| B+ | Battery Pack Positive |
| P− | Charge/Discharge Negative |
| P+ | Charge/Discharge Positive (Connected to B+) |
Note: Connect the balance wires in the correct order (B− → B1 → B2 → B3 → B+) before connecting the charger or load.
Applications
- Solar energy storage
- UPS and backup power systems
- Portable power stations
- LED lighting systems
- Robotics
- Electric scooters and mobility devices
- DIY battery packs
- Camping power supplies
- Educational electronics projects
Advantages
- High safety compared to standard Li-ion batteries
- Long service life with thousands of charge cycles
- Stable output voltage
- Built-in battery protection
- Low maintenance
- Lightweight and reliable
- Excellent thermal stability
Size
| Specification | Value |
|---|---|
| Battery Cell Size | Approx. 32 × 70 mm (32700 Cell) |
| BMS Dimensions | Approx. 60 × 45 × 5 mm |
| Total Weight | Approx. 600–700 g (Model Dependent) |
Package Includes
- 4 × 3.2V LiFePO₄ Rechargeable Battery Cells
- 1 × 4S 10A LiFePO₄ BMS Protection Board
Note: This kit is designed only for 4S LiFePO₄ (12.8V nominal) battery packs. Use a 14.6V LiFePO₄ charger for charging. Do not use chargers intended for Li-ion/Li-Po (12.6V) battery packs, as they are incompatible. Ensure all wiring is correct before connecting the battery, BMS, charger, or load to ensure safe and reliable operation.








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