This coach was purchased 7-3-08 with brand new house batteries, Deka gel filled. They currently have none in stock and one has been ordered out of factory in PA. We're currently in a holding mode awaiting the arrival of this battery. And,yes; we're having to start our bus engine and then start our generator in order to have power to house systems. Will inform you of the results after battery is replaced. The coach is a 1985 Marathon Prevost, it contains 4 house batteries and 4 engine batteries. All new. It has a Vanner battery charger and an inverter. The battery charger is a 50-20 amp. we will be having the charger checked, also. We thank all who have responded and would appreciate any other thoughts any of you may have. Patty Lou Evans