The majority of the energy cabinets have backup batteries or can be charged from solar systems directly, and they power critical devices like lighting, internet routers, and refrigerators throughout the day. This typically includes battery cells, a charging controller, and in some systems, a converter. Battery cells store electrical energy and release it as needed, while charging controllers. An energy storage cabinet stores electrical energy, then supplies it during outages, high-demand periods, or times when electricity prices peak. enhance energy autonomy, and 4.