The Engel 45 has exellant performance consuming very low daily amperage. 10.8 amps-hrs as a drink cooler, 16.1 amp-hrs as an average
boat refrigerator, 21 amp-hrs with a total box temp of 34 degrees, 35.3 amp-hrs as a 21 degree high temp
freezer and 54.5 amp-hrs at a total box temp of -2.56 degrees.