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The 4S 30A Battery Management System is a professional-grade protection board designed for 4-cell LiFePO4 battery packs. It ensures safe operation by offering overcharge, over-discharge, and overcurrent protection while maintaining stable current flow during use.
Built for reliability, the 4S 30A Battery Management System can handle a constant discharge of 30A with peak discharge support up to 56A. It supports charging currents up to 20A within a safe voltage range of 14.8V to 18V, making it suitable for high-power applications. Please note: this module does not include cell balancing functionality.
Compact, lightweight, and efficient, the 4S 30A Battery Management System comes with a JST-XH 5-pin connector and cable for easy installation. Its wide operating temperature range from -30°C to +80°C makes it dependable for both indoor and outdoor energy systems.
Whether for solar storage, e-bikes, or custom power projects, the 4S 30A Battery Management System is an excellent choice for extending battery life and protecting your investment.
🔧 Key Features
- Designed for 4S (4-cell) LifePO4 battery packs
- 30A continuous discharge with 56A peak support
- 20A maximum charge current, 14.8V – 18V charging voltage
- Protection against overcharge, over-discharge, and overcurrent
- Durable PCB with JST-XH 5-pin connector and cable
- Supports wide temperature operation (-30°C to +80°C)
📐 Technical Specifications
| Product Name | 4S 30A Battery Management System – LifePO4 |
| Battery Compatibility | 4-cell (4S) LiFePO4 packs |
| Charge Voltage | 14.8V – 18V |
| Max Charge Current | 20A |
| Continuous Discharge | 30A |
| Peak Discharge | 56A (short duration) |
| Overcharge Detection | 3.75V ± 0.05V per cell |
| Overcharge Release | 3.60V ± 0.05V per cell |
| Over-discharge Detection | 2.10V ± 0.08V per cell |
| Over-discharge Release | 2.30V ± 0.10V per cell |
| Overcurrent Protection | Triggered at ~56A ± 10A |
| Protection Reset | Requires load removal |
| Operating Temperature | -30°C to +80°C |
| Balance Charging | Not supported |
| Connector | JST-XH 5-pin (right angle) with cable |
| Weight | Approx. 25 g |
📌 Applications
- Custom-built LifePO4 battery packs
- Solar storage and backup systems
- Electric bikes, scooters, and mobility devices
- UPS units and portable power banks
- DIY robotics and high-current electronics
💡 Why Choose This Product?
This module delivers solid protection, accurate cut-off thresholds, and reliable current handling, making it an affordable and effective solution for LiFePO4 projects. Its safety features extend battery life while protecting your pack from damage.
📦 Package Includes
- 1 × 4S 30A Battery Management System (LifePO4)
- 1 × JST XH 5-pin Right Angle Connector
- 1 × JST XH 5-pin Cable
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