My comments and questions are based on the following link drawing
This is a generic schematic I am working on involving two gensets. I based it on a similar design. I am paralelling the start batteries of each to power the generator control panel. I put diodes in to "isolate" the batteries from one another so if one battery is low, the other I thought would be protected from equalizing. The more I look at it, the more I think the batteries would still equilize through the control circuit.
So if the voltage between G1+ and G1- is 12.6 volts and for what every reason, the voltage between G2+ and G2- is lets say 10 volts, would the batteries equalize through the control circuits?