EG4 LL 12V 400Ah LiFePO4 Server Rack Battery - 5.12kWh, 200A BMS, LCD Display

The EG4 LL 12V 400Ah LiFePO4 Server Rack Battery delivers exceptional reliability and efficiency for energy storage systems, RVs, marine applications, and off-grid setups. Known as the "Lifetime Lithium" series, this model offers 5.12kWh of usable capacity, powered by 16 UL-listed 3.2V prismatic LiFePO4 cells and an advanced 200A internal Battery Management System (BMS).

Engineered for longevity, the EG4 LL 12V battery provides over 7,000 deep discharge cycles at 80% Depth of Discharge (DoD) and operates at 99% round-trip efficiency. Designed for ease of use, it features an LCD screen for monitoring vital battery information, plug-and-play connectivity, and selectable closed-loop communication with major inverter brands such as EG4 and Victron.

Each battery includes parallel cables and a 1-foot RS485 communication cable, with one RS485 USB comm cable provided for every six batteries purchased. This flexible, scalable energy solution is built to deliver dependable power for over 15 years.

Key Features:

• High-Capacity Storage - 12.8V, 400Ah (5.12kWh) of reliable energy for home, RV, or marine power systems.

• Long Cycle Life - Tested for 7,000+ cycles at 80% DoD, ensuring years of dependable performance.

• Integrated 200A BMS - Manages voltage, current, temperature, and overall system health for safe operation.

• LCD Display - Provides real-time data on charge level, voltage, and system status.

• Closed-Loop Communication - Supports EG4 and Victron inverter integration for optimized performance.

• High Efficiency - 99% operating efficiency with maximum energy density.

• Scalable Design - Easily expand your system with parallel connection capability.

• Environmentally Friendly - Lead-free and fully recyclable LiFePO4 chemistry.

• Long Design Life - 10 to 20-year expected lifespan under normal operating conditions.

Specifications:

• Voltage: 12.8V

• Capacity: 400Ah

• Energy: 5.12kWh

• Battery Management System: 200A internal BMS

• Configuration: 16 UL-listed 3.2V LiFePO4 prismatic cells

• Dimensions: 6.1 × 19 × 20.2 in (15.5 × 48.2 × 51.3 cm)

• Weight: 98.1 lbs (44.5 kg)

• Design Life: 7,000 deep cycles at 80% DoD

• Efficiency: 99%

• Warranty: 10 years

Warranty Information:

EG4 Electronics provides a 10-year full parts or product replacement warranty from the date of the original inverter (EG4 18kPV-12LV) purchase. Warranty registration or proof of purchase from an authorized EG4 distributor is required to maintain validity.

This warranty covers eligible defects under normal operating conditions. For full terms, exclusions, and registration instructions, refer to EG4’s official warranty documentation.

User Manuals:

• EG4 LL 12V/24V – Manual V2.0.2

• EG4 LL 12V – Spec Sheet V2.0.1

• Installing EG4 LL-S with Other Batteries