The Enerdrive Low Battery Cut Out (LBCO) is used to prevent main battery excessively discharge. When the battery voltage reaches 12.8V or 25.6V (dependant on system voltage), the LBCO engages (it reverts to its original state) connecting the load to the battery, and the LBCO's alert light switches off. When the voltage falls bellow 11V or 22V (dependant on system voltage) for 3 to 6 seconds, the LBCO automatically detects this and switches off the essential circuit load. This system eliminates the possibility of draining the battery and protects sensitive electronic equipment powered from the house battery from harmful engine start up spikes.