OER Parts offers a wide selection of Battery Accessories for your 2000 Cadillac Eldorado. OER Parts offers 2000 Cadillac Eldorado Battery Tender, 2000 Cadillac Eldorado Battery Managment System, 2000 Cadillac Eldorado Dual Battery System Controller Set, and 2000 Cadillac Eldorado Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller