I use the Walmart Everstart deep cycle batteries and have no issues with them since learning to properly charge and fill batteries. I talked with a rep at Johnson Controls a couple years ago. Any of the Walmart Everstart "deep cycle" batteries that have DC in the number (i.e. 24DC,
27DC, 29DC, 31DC) are supposed to be true deep cycle batteries and not "marine starting" (deep cycle/starting) batteries. Those that have MS in the number (i.e.
24MS, 27MS, 29MS, 31MS) are supposed to be "marine starting" (deep cycle/starting) batteries.