... we can adjust the output to customer requirement 3000W solar power generatorAc output voltage: 220V or 110V Power: ... working time:4 hours, cloudy day: 3 days Solar panels: 4000Wp. life≥25years Free maintenance lead-acid batteries ... controller, inverter and other attachments )CableThe system includes solar panels, storage battery, controller, inverter, Mainframe box, cable 3000W solar energy system