A 48V lithium-ion battery storage system incorporates various electrical power storage features into one unit. This system includes 48V lithium-ion batteries, an inverter, a charger, and a battery management system (BMS). The system is capable of gathering energy from solar panels and the grid and smartly divides the energy out depending on demand. The BMS takes care of battery operations with monitoring and control functioning with safety and optimal performance in mind. This system can arms a residential home with backup power or be used for commercial energy management, serving as a reliable energy source.