Can you run it off a deep cycle battery or do you have to have solar ?

Hi John, Thank you for sending your inquiry and interest in our products. We recommend the 3000 Watt inverter to be connected to a deep cycle battery and hook up in a solar panel system. Hope this answers your question. Should you have any questions, please contact us at 909-287-7111, Monday through Friday 8:30 am - 3:00 pm PST, and expect long wait times as we also are migrating to a new phone system. Again, thank you for your patience.