When we purchased our camper, the salesman claimed the solar would easily keep up with the 12 volt fridge. It not come even close, giving us barely 24 hours on battery. We have had this one out several times now and each trip has exceeded 3 days with no concerns. The battery fits inside a double box which allowed me to attach it to the front of the camper in the same location the previous battery was. This has made our summer camping much more enjoyable and am looking forward to camping long into the fall season.