Re:Batteries, What's best????
I have found that if you charge and use and recharge a battery often, especially on a hot cart all day, it will fail...probably within a year or so. Therefore I recommend Costco for a marine battery. Their warranties are pretty unbeatable, and their prices are very competitive. Selection, not so much. I buy big batteries and run lights, put in an ac inverter and run a stereo, charge CC machines, etc...
My 2 cents.