Originally Posted by sundancer 87
Doesn't your RV have an inverter to keep the battery charged? While connected to shore power the inverter will charge the battery to operate the 12 volt appliances.
If the RV is stored or not in use a cut off switch will switch out the battery to keep it from going dead for awhile.
A converter/charger converts 115 volts to 13.2, 13.6, or 14.4 volts (depending on the make and model) to charge the battery and run 12 volt devices.
An inverter uses 12 volt battery power to make 115 volts AC to run 115 volt appliances.
Many RV's have a disconnect switch to shut off most 12 volt appliances. Certain 12 volt devices are not connected through the cutoff switch.
Some RV's have an additional disconnect switch near the battery that is a true disconnect. When the true disconnect is opened, a fully charged flooded cell battery will last in storage for 3 to 6 months. An AGM battery will last 6 to 12 months.