Perfect for storing insulin during an extended power outage. "Smittybilt" 52 quart portable cooler/freezer is designed to keep your beer cold in a tropical climate while off road 4 wheeling in remote terrain. Runs on 12 volt cigarette lighter current or 110 house current. Pricey though at $889. Would make a nice addition to your survival gear if you could afford it. A simple single solar panel and a deep cycle battery would keep this unit purring when the grid power goes down.