[Al Skierkiewicz]

Robby,
In reality there is an internal regulator built into the controller. If you are drawing significant currents and drawing the voltage down so far that the backup battery takes over, you have some other problems to correct. The controller switch is just a symptom of a bigger problem. It might be as simple as a loose connector on the battery or a poorly made crimp on the wires feeding the controller. But it could be something wrong in you mechanical systems. Find the cause and fix it.