Jim,

There are a few things to note that are not listed above. First, the charging voltages will vary depending on the type of batteries being used. Your inverter manuals discuss this and the dip switches on the back of the display panel should be set for the specific type of batteries and that will control the voltage so no battery damage will occur. It is typical for example for AGM batteries to have a lower charging voltage than wet cell for example.

The coach batteries are usually wet cell, and as such they may have a higher charging voltage, but since the house batteries are being charged when the engine is running the coach voltage regulator should be adjusted to reflect the charge limits for your house batteries.

Both house and coach battery voltages should be set OK unless someone has monkeyed with them. Just take the time to verify that. A meter on the fully charged batteries when the engine is running or you are on shore power will give you the verification.