Using this inverter is easy. For fixed installations, just plug it into a 12V wall adapter. For portable projects, use a big battery pack like an 8xAA holder. When it comes to powering EL items, you can connect up to 6 meters of high - brightness EL wire, 12 meters of plain EL, or 100 square centimeters of panel/tape. Remember, this inverter is only for battery or wall adapter use. Don't connect it directly to a 12V car inverter. If you find the inverter is making too much noise, you can open the case carefully and pour some acrylic paint on the inductor/transform to reduce the noise. Keep the inverter in a dry and cool place to ensure its long - term performance.