I have two 100 watt solar panels and 4 25 watt solar panels I got from harbor freight . The 4 panel set comes with everything you need to charge batteries and control box that allows you to change you phone and other electronics. I also have a 7000 watt inverter I got off Amazon that is a pure sign inverter so it will not hurt your electronics. We live up in the mountains and have been just fine when we loose power. Also we use it when we are camping.