Thanks for the reply. Here is the battery I was looking at http://www.batterytender.com/Batteries/240-CCA-Lithium-Engine-Start-Battery.html
I didn't notice it's actual storage capacity until you mentioned it. Looks like these batteries have big cold cranking amps but not much storage. Suppose I'll go with 6 maintenance free 110ah batteries from WalMart like these http://www.walmart.com/ip/Schumacher-Electric-12V-110AH-Battery/25955633
Am I thinking correctly? I'm not sure if there is a difference between how the capacity of a lithium battery is rated compared to that of a regular battery. I'm confused on that, hope it's not contagious (grins).