Hi twvette;
I have been using AGMs since 2009 and I have two Optima D34M that will start their 6th year this coming Jan.
Your Battery specs are on pp 5-6, mine are on pp 7-8. You have a 225AH battery bank. That ought to be plenty for a day's use.
I agree with pianotuna about the lack of adequate charging. Your batteries are in danger of being permanently damaged by sulphation.
The 12.7V you say represents a 75% charged AGM. Don't be fooled by Voltage charts for flooded batteries! A fully charged Optima like ours will read 13.1V 24 hours after a full charge. Mine are older and only read 13.04 the last time I tested them. That means disconnected and after 24 hours resting.
Let's get those babies charged. :)
HTH;
John
