I thought I sent this question before, but I can't find it so I sending it again. I had this problem last year just about this time. The house batteries was replaced and it seems to had taken care of the problem as not starting up the MH. Well this weekend the co 2 detector was making the alarm and I FOUND OUT THAT THE COACH WOULD NOT START. I put the chassis battery on the charger and let itcharge the battery. Well after awhile I went back and took off the charger and the MH started. an hour later it was dead again. I checked all the appliances nothing was on, besides I have it plugged into a 30 amp receptacle anditstays hook up until we take off. question is what is wrong with the batteries or battery. Is this a common problem with house batteries, if so and solution on how to maintain them?