I have a couple of fridges, an old 50lt Waeco and a new 38lt "Plastic Engle". Both work great although the old Waeco sucks lots more amps. I also have a 60lt Techni Ice white box. Is this the one your referring to? I've never had any problem with it. What I do is freeze some water in 3 2lt plastic milk bottles and then a couple of bags of ice. I have no problem getting three days out of it before topping it up with more ice. That works well for me as I only use it for drinks.