Ran out of 12 DC @ 3 AM 1st night.

Gundog wrote:
When I bought the coach they told me the batteries were fairly new I need to see if they have dates on them.

"Fairly new" is salesman-speak for "we have no idea."

Any "new to us" (used) coach is extremely unlikely to come equipped with good batteries - or tires. 4 -6v batteries should handle your loads just fine- as long as they're good quality, charged, and "fairly new."