The S6-EA3P(5-10)KAA-NV-YD-H-PRO series represents a new generation of three-phase AC coupling products, specifically designed to provide energy storage upgrade solutions for grid-connected PV systems. System retrofitting is straightforward, investment costs are low, and existing wiring remains unaffected. With a battery voltage range of 120–700V and a maximum charge/discharge current of 50A, it accommodates mainstream high-voltage battery systems on the market. This fully unleashes battery system performance, flexibly matches various battery configurations, and reduces battery system investment costs. Support for AI battery management significantly enhances energy efficiency in storage systems and optimizes household energy cost-effectiveness. Integrated battery maintenance and protection functions effectively extend battery lifespan.