All ActivityMost RecentMost LikesSolutionsRe: Class C coach BatteriesThanks so much for the help. All three batteries are 12 volt marine batteries. They were dated from 2010 to be safe I changed them . I also have a battery under the hood. Living in Florida and storing it here I know how heat can destroy batteries before their time..Class C coach BatteriesVERY VERY new to owning a motorcoach. Looking forward to getting on the road with our coach. We have a 2000 Gulfstream Class C coach we bought used. I am sure this is a novice question so please bare with me. Our coach has 2 batteries outside in one compartment in series. We also have 1 battery inside the coach under one of the steps which has a off/on lever wired to it. Can someone please explain the purpose of the three battery setup we have? Any help in understanding this would be appreciated. Thanks Again