I use the power adapter for WAECO TC8-310-12 Frigobox icebox. In continuous operation, the power supply at room temperature is just slightly warm, which indicates a high level of efficiency. The cooler requires about 40W - thus the power supply with its technical data 12V and max.5A (. So max 60W) is excellent dimensioned. For consumers who need more than 60W, the power supply should not use it consequently. The power supply is very inexpensive in my opinion, extremely compact for its performance and - if one can judge from the outside - built solid, therefore, a strong buy recommendation. The output voltage when my device 13.3V at idle and 12.9V at 4A load. These are good values also correspond approximately to the output voltage of a cigarette lighter socket when fully charged. The power supply has now successfully launched a 24-hour continuous test behind him - let's see how it proved long term ...