In 2015, the best places to buy a car battery included retailers like , Walmart , and specialized auto parts stores like AutoZone and Advance Auto Parts . Costco was often singled out by enthusiasts for its easy warranty returns and competitive pricing on Interstate batteries. Walmart was recognized as a top value destination, with its EverStart Maxx series frequently earning high ratings from Consumer Reports for balancing performance and cost. Top Retailer Deep Dive Go to product viewer dialog for this item. Duralast Platinum AGM Battery 48 / H6 Group Size DIN