The 714-140A-DVSR BEP Battery Distribution Cluster For Single Engine with Two Battery Banks uses a dual sensing DVSR (710-140A). This system ensures that you will always have a fully charged reserve battery.
A two-position switch combined with a Digital Voltage Sensing Relay (DVSR) to make sure your boat always has a fully-charged battery. The Digital Voltage Sensing Relay (DVSR) provides an efficient and inexpensive solution for automatic charging of a second battery bank. It ensures correct charging without the risk of a dead starting battery.
When the switch is in position one, battery one becomes the sensing battery for the VSR. Battery two, which is in isolation, is charged through the VSR when the engine is running to ensure that it is always fully charged. When the switch is in position two, battery two becomes the sensing battery and battery one is charged through the VSR. The fact that there is always a fully charged battery in reserve is a huge safety advantage.