I have charge house battery for 3hours and I check it and it only shows 11.58 volts it was showing 11.5 volt before I charge it, I just got my motorhome from cam ping world in which they had it for 3...
It should be charged for a 24 hour period then recheck. I don't know how many amps you are charging at, as well as how many amps your battery holds(Cranking amps)