The Joysun household energy storage system is an intelligent energy manager for your home. Supporting flexible capacity expansion from 5kWh to 30kWh, it uses LiFePO₄ cells with extremely long cycle life (often exceeding 6000 cycles), ensuring decades of reliable service. Compatible with both photovoltaic and grid charging, it stores solar energy during the day and powers the home at night, effectively reducing electricity costs by shifting usage to off-peak rates or self-generated solar power. A smart app provides real-time monitoring of generation, consumption, and storage data, making home energy use more flexible, economical, and green.