The Ion Minicooler comes with a regular cord and one for the car.  I put a room temperature bottle of water in the Ion Minicooler and plugged it into a wall outlet.  In 2 hours, the water was chilled.  Two hours later is was more chilled but never got ice cold like a refrigerator or ice would get it.  I also plugged it into the car outlet & brought frozen raspberries in it to see if they were kept from defrosting.  In the 30 minutes it took to get home, they were still frozen.