The BMV712 came with a lithium battery package for a boat. It is connected to a single 24V 75AH lithium battery. I'll be adding another 12V lithium and connecting it to the 712 as well. Question is....Is the gauge water resistant? I need to mount it in a console that is open to the weather and don't want to find a gauge flooded with water after a good rain. The shunt is hidden away in a dry compartment. Thanks.