OER Parts offers a wide selection of Battery Accessories for your 1964 Cadillac Eldorado. OER Parts offers 1964 Cadillac Eldorado Battery Tender, 1964 Cadillac Eldorado Battery Managment System, 1964 Cadillac Eldorado Dual Battery System Controller Set, and 1964 Cadillac Eldorado Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller