Batteries don't charge

Let the two house batteries get down to 3.92 volts. Yes, I got stupid, but on with the story. Serviced them but now they won't charge from converter. Voltage from converter is 13.45. Across battery solenoid 9.28. From cutoff switch to solenoid 2.35. I have checked both 175 amp fuses. I also checked fuses on solenoid. It appears the solenoid is not passing power to the batteries and does not click when cutoff switch is pressed.

Would charging the batteries off coach solve this or do I have other issues?

Batteries are dated 1/09 and 2/09 and this is the first time they have been below 10.5 volts.