OER Parts offers a wide selection of Battery Accessories for your 1976 Cadillac Calais. OER Parts offers 1976 Cadillac Calais Battery Tender, 1976 Cadillac Calais Battery Managment System, 1976 Cadillac Calais Dual Battery System Controller Set, and 1976 Cadillac Calais Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller