Pat Stafford

We also supplement our fridg with a Coleman cooler and it works fine. It takes three hours or so to cool things down initially. This is reduced if you put cold items in it. They advise you not to put ice in it to supplement the cooling because of water issues when it melts. But, we have found that one or two frozen blue ice containers will work wonders with this unit. You can freeze them again in your TM fridg when they thaw out. Ours stay frozen for about two days in the Coleman when it is plugged in.