Duracell 12v Grp 31 AMG Back At Sams Club...$179 Tue January 12th, 2016 They're Back! Duracell® AGM deep cycle marine and RV battery - Group Size 31 - Sam's Club... http://www.forestriverforums.com/forums/f218/duracell-12v-grp-31-amg-back-at-sams-club-179-a-99237.html