Product review (4 stars): Initial test and comments
Purchased the Knox cooler to hopefully do away with doodling with ice bags and wet food containers when traveling. I tested the cooling capacity on both 12Vdc and 120Vac. Both voltages provided the same results, the inside of the chest dropped to around 42F and stayed there. The temperature did not drop any lower no matter how long the chest was powered and no matter which voltage was utilized. The outside temperature of the chest ranged from 70 in the house to 85 in the garage. The internal temperature of the box was consistent at ~ 42. It will be much more interesting to test the box under actual summer temperatures. The heat will be the real test, so, summer will the true teller of the tale.
I do want to mention two things, first, there is condensation forming around the cooling unit and dripping inside the box, just keep in mind you will have some water appear inside. Second, someone reviewing the Knox previously mentioned that the cigarette plug gets hot - Yep, it does, it gets hot enough that you don't want to hold onto it with a bare hand. Not hot enough to deform the plastic, just hot enough to be quite noticeable.