This is a Haisic 4kWh All-in-One Solar Generator, which combines a 1.5kVA hybrid inverter with a 4kWh Lithium Iron Phosphate (LiFePO4) battery.The unit is designed for compact, wall-mounted installation and can be stacked to expand capacity up to 8kWh.It features a built-in 60A MPPT charge controller and is suitable for powering household appliances like TVs, fridges, and freezers.