This is a very efficient electric cooler based on the free piston Stirling cycle that will maintain freezing temps even in a hot car. The power consumption is only 24 watts. It’s quiet, lightweight and works great. It’s more practical than the portable compressor or propane based freezers. According to Cool Tools, these coolers are quite reliable and last many years. The cooler runs on either 12v or 110v and has a 26 quart capacity.
Available from CostCo for $390.