Power your home or business with this Risen 20.48kWh LiFePO4 stackable solar battery system. It contains four individual 5.12kWh modules, each providing 51.2V nominal voltage, 100Ah capacity and 5120Wh energy. Together, the four modules provide approximately 20.48kWh nominal storage capacity. The battery incorporates a built-in BMS to manage and protect the battery system. Communication is supported through RS485, RS485A and RS485B, with SOC and ALM/RUN LED indicators for monitoring operating status. Each module has an independent ON/OFF switch, reset connection and protected DC terminals. The modular stackable design is ideal for solar backup, energy storage and high-capacity residential or commercial installations.