1, Power Inverter 2, Pure sine wave 3, With charger inside 4, Battery ... and industrial applications. Capacity availability range from 500VA to 5000VA, it can power most common electrical appliances in these fields.CPU controlCPU ... warning (beeping) for 30 seconds, after 30 seconds, Inverter will switch off to avoid damage. On battery mode, overload more than 150 ...