What does it mean when the inverter is making a high pitch noise?
• Overload: You may be running more then 400 watts and causing the inverter to shut off. • The battery: May not be charged enough to run the inverter. Please hold down the “battery status button” to make sure this is not the issue. • In inverter may have an internal defect in which you would need to contact us via email or at 1.800.231.