If a solar panel with the device was installed on a caravan with the box

As shown in the pictures, a complete solar panel with the device and the box with a 12 to 220 power inverter There were batteries, but they were damaged, so I removed them It works, no defects Reason for removal: the caravan malfunctioned and had damages, so I removed it from there Price is negotiable, don't negotiate if you don't know the price of a 1000-watt inverter and the solar panel