Battery problems???

Gator48 wrote:
Last week on a trip to Missouri we had house battery problems. After being plugged up all night then hitting the road the Not so cold would start beeping "no AC" after less than 1 hour on the inverter. The inverter shut off from "low battery". Starting the generator would solve the problem until we could reconnect to shore power.

Today I checked the batteries and got 12.6V on each of them. I turned the fridge on and within 45 minutes I was at 11.4V on each battery and dropping.

I plugged the coach back in and the charger jumped to 14V bulk charge.

I don't have a load style tester but it looks like my 2009 Walmart Evermax marine batteries are not storing enough energy. They are getting to 13V after charging but drop like a rock when they get the 475 watt load from the fridge.

Is it agreed the batteries need replacing? if so, which 12V deep discharge are the best for the money?