Think about it, it's no different than when you have to change out batteries. Everything goes dead until the "hot" batteries are installed. The normal things will have to be reset like the clock on the microwave and any other timed electrical items. Once the batteries are charged everything should be working as it previously was.
2016 Newmar Dutch Star 4369
Newmar Owners Club
USAF 1966-1969,- Law Enforcement 1969 - 2003, Unemployed (retired) since March 2003