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