Smart Jiabaida (JBD) 4S 12V 300A LiFePo4 Common Port BMS

Smart Jiabaida (JBD) 4S 12V 300A LiFePO₄ Common Port BMS: High-Power Protection for 12V Battery Systems

When you need serious power with robust protection, the Smart Jiabaida (JBD) 4S 12V 300A common-port BMS is engineered for demanding LiFePO₄ battery systems. This module is designed for 4 cells in series (nominal ~12.8 V), and supports continuous currents up to 300 A, making it suitable for heavy loads such as inverters, EV conversions, solar systems, and rapid discharge applications.



Core Features & Capabilities

  • 4S / 12V configuration: The BMS monitors and balances four LiFePO₄ cells in series, yielding a nominal 12 V pack.

  • 300A continuous capacity: It handles high loads, giving headroom for bursts or demanding discharge requirements.

  • Common port architecture: Both charging and discharging share the same positive and negative terminals, which simplifies wiring in some configurations.

  • Cell balancing & monitoring: It continuously monitors individual cell voltages and balances them to maintain uniform charge levels across all cells.

  • Comprehensive protection: Overcharge, over-discharge, overcurrent, short-circuit, and temperature protections are built-in to safeguard both the battery and connected devices.

  • Communication interfaces: Many versions of this BMS support Bluetooth, UART, RS485, or CAN connections, allowing real-time monitoring of cell voltages, current, temperature, and fault states.

  • Optional heating support: Some 300A variants include heating ports or functions to maintain performance at low temperatures (especially useful in cold climates).

Advantages & Suitable Applications

This high-current BMS is ideal for applications where modest 100–150 A BMS modules fall short. Use cases include:

  • Inverter systems in off-grid or hybrid solar installations

  • Electric vehicle or e-mobility battery packs

  • High-power battery banks driving motors, pumps, or heavy loads

  • Systems located in varying temperature environments, especially where heating support is beneficial

The combination of high current capacity, balanced protection features, and smart monitoring makes it a versatile choice for advanced battery setups.

Practical Considerations & Installation Notes

When deploying this BMS, observe the following:

  1. Ensure your wiring and connectors can handle 300 A safely, with low resistance and proper gauge.

  2. Add external fuses or circuit breakers upstream for extra protection.

  3. Provide good heat dispersion or cooling, as high current operation can generate thermal stress.

  4. Match firmware settings (voltage thresholds, temperature cutoffs) to your specific cell chemistry and battery design.

  5. Use the communication interface to monitor health, detect anomalies, and configure thresholds as needed.

With proper design and installation, the Smart JBD 4S 12V 300A common-port BMS becomes a powerful backbone for demanding LiFePO₄ battery systems, offering protection, control, and performance in one module.

Contact

+𝟭 𝟳𝟳𝟡-𝟳𝟳𝟬-𝟯𝟭𝟬𝟡

https://srikobatteries.com/product/smart-jiabaida-jbd-4s-12v-300a-lifepo4-common-port-bms/

kruthala@srikobatteries.com

1585 Beverly CT, Unit 121, Auror

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