Inverters have one simple job: to convert 12V power from your battery, car or caravan into 240V AC power like you have at home. The Enerdrive ePower Inverters will reliably run any AC powered appliances that draw up to 400W or 600W that you might need while youre in the great outdoors. Being true sine wave inverters, theyre also safe to run devices such as laptops and phones. They feature a high surge capacity to allow for items that require more power when you first start them up. The 400W inverter has a surge capacity of 800W, and the 600W inverter has a surge capacity of 900W. The inverter comes with mounting brackets for the option of permanent installation, a DC battery cable with heavy duty alligator clips and 12V cigarette socket.