OER Parts offers a wide selection of Battery Accessories for your 1954 DeSoto Powermaster. OER Parts offers 1954 DeSoto Powermaster Battery Tender, 1954 DeSoto Powermaster Battery Managment System, 1954 DeSoto Powermaster Dual Battery System Controller Set, and 1954 DeSoto Powermaster Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller