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My gut tells me that is OK. Your inverter charger may have been set for AGM batteries.
In my bus I have a single alternator so both the wet cell bus batteries and the AGM house batteries are being charged simultaneously. Based on what I have seen on my voltmeters when running, my voltages are consistent with my understanding of the safe level for AGM. I am presuming that the bus batteries tolerate lower charging voltages.
The charging through your alternators is your other concern.
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Yes that is why I will take my house alt. off and take it in to have it checked. I might just see about a new 180+ alt. I bet mine is just a small auto alt.
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Dale,
You don't need to remove an alternator to check its output.
Just go to fast idle and check the voltage at your respective battery posts. If the batteries were near fully charged when you checked you should see the absorbtion charge voltage or float rate.
If it is too high the voltage regulator can be adjusted......unless it is a small automotive type with the internal voltage regulator.