What is the TBB-M12400?

The TBB-M12400 is a high-performance 400Ah 12V Lithium Iron Phosphate (LiFePO4) battery, designed by TBB Mobile for safe, efficient, and long-lasting energy storage. Featuring a built-in 300A BMS, low-temperature heating function, and parallel expandability, it is an ideal solution for off-grid power, marine applications, and vehicle energy storage.

With its intelligent battery management system (BMS), the TBB-M12400 actively monitors, protects, and optimizes battery performance, ensuring stable operation and extended lifespan.

Key Benefits of the TBB-M12400

• Long Cycle Life: Up to 3,000 cycles at 25°C, 0.5C charge/discharge rate, far surpassing traditional lead-acid batteries.
• High-Performance BMS: Provides comprehensive protection, including:
  • Overcharging & over-discharging
  • Over-current & short circuits
  • High & low-temperature protection
  • Cell balancing & cycle life tracking
• High Discharge Capacity: Supports a maximum 300A discharge current for high-power applications.
• Parallel Expandability: Supports up to 8 units in parallel, increasing total capacity for large-scale energy storage.
• Automatic Wake-Up Function: When an external charging voltage >14V is detected in shutdown mode, the battery automatically activates, allowing charging while preventing discharge.
• Optional MEH-B Display Panel: By connecting the optional TBB-MCK remote meter to the battery, this enables extra monitoring and control features such as battery switch control and real-time monitoring of voltage, current, and State of Charge (SOC).
• Low Power Consumption:
  • <50mA standby power consumption when active
  • <0.1mA ultra-low standby draw when powered off
• Wide Operating Temperature: Functions in extreme conditions from -30°C to +60°C, ensuring reliable performance.
• Integrated Low-Temperature Heating: When connected to an external power source (mains, solar, or vehicle engine), the built-in heating system automatically raises battery temperature for safe charging and discharging. Heating from -20°C to +5°C takes approximately 90 minutes.
• Compact & Lightweight: Offers high energy density, reducing weight and saving space compared to lead-acid alternatives.

Advanced Protection Features

The TBB-M12400 is designed with multiple layers of safety for ultimate reliability:

• Short Circuit Protection
• Over-Current Protection
• Battery Low Voltage & High Voltage Protection
• Cell Low Voltage & High Voltage Protection
• Discharge & Charging Temperature Protection
• BMS Circuit Over-Temperature Protection
• External Input Overvoltage Protection

The TBB-M12400 is an advanced energy solution built for durability, efficiency, and safety, making it the perfect long-term power investment for off-grid applications, marine vessels, and vehicle energy storage.

For more details and technical specifications, click on the Details and Specifications tab.

Battery specifications:

• Nominal voltage: 12.8V
• Nominal capacity: 400Ah
• Nominal energy: 5.12kWh
• Life cycle: 3000 cycles @100% DoD, at 25°C
• Recommended charge voltage: 14.2V
• Maximum charge current: 200A
• Recommended charge current: 100A
• Maximum discharge current: 200A (Continuous)/ 300A (10 minutes)
• Operating charge temperature: from 2°C to +60°C
• Operating discharge temperature: from -30°C to +60°C
• Humidity: 10-90% (RH)
• Size: 462 x 237 x 326.5 mm
• Weight: 42.5kg

This product is covered by a 5 year warranty. For more information please refer to our Terms and Conditions.

This product is supplied with a user manual which explains connection, operation and installation (see Documents tab).

User manual for the 400Ah 12V TBB Power Mobile Lithium Battery Module with Heating & 300A BMS (TBB-M12400)