IDEA...charging house battery(set) underway.
It seems that the chassis alternator/VR system will often not fully charge the house battery(set) due to voltage drop between the two, or overcharge, boil the electrolyte away, for a deeply discharged...
Forum Discussion
wwest wrote:
It seems that the chassis alternator/VR system will often not fully charge the house battery(set) due to voltage drop between the two, or overcharge, boil the electrolyte away,
Bad theory.. First: Your tow vehicle alternator, unless upgraded (Assumes a trailer) is not goign to love a really big load all that much, So the voltage drop in the wires,, Protects it.
On a motor home the alternator is likely bigger, but same applies.
Second: AS the battery charges, current flow drops. the closer the house battery gets to charged the less, and less and less current flows (Same for the starting battery by the way) and as the current approaches zero,, VOLTAGE drop approaches zero as well.
And then you went on to say "Or overchages" Clearly, if there is all that much voltage drop that's not going to happen.
Now: Why do the batteries dry out?
Well. With new batteries I need to water annually. as they age more often.. but... What converter do you have.. Some of them are well known for boiling batteries,, Some,, not so much.
