When you are finished using your RV for the season, you should disconnect the battery to prevent it from draining. This is where an RV battery disconnect switch comes in. It’s not a critical component for your rig’s functionality, but it keeps your battery in good health. The switch comes in handy when storing your trailer for a long time, like in the winter. If you live in the coldest part of the United States, you must have this switch in your rig to protect the battery pack from the damage caused by long-term inactivity. What Is an RV Battery . View detail https://www.rvingtrends.com/rv-battery-disconnect-switch/