The Intelligent Integrated Energy Storage Cabinet provides small commercial users with an outdoor energy storage solution to shave peak and fill valley, reduce electricity costs, support green power continuity, feature plug-and-play battery packs, and automatically switch to battery power mode during utility outages. The system is highly efficient, improves power quality, saves electricity costs, and ensures uninterrupted commercial power supply. The cabinet consists of the enclosure, solid-state battery packs, Battery Management Unit (BMU), control unit, inverter modules, and environmental management unit. The cabinet also reserves space for additional battery packs. All components are factory-prefabricated, pre-installed, and pre-commissioned, making the system suitable for rapid on-site deployment and installation.