OER Parts offers a wide selection of Battery Accessories for your 1984 Oldsmobile Firenza. OER Parts offers 1984 Oldsmobile Firenza Battery Tender, 1984 Oldsmobile Firenza Battery Managment System, 1984 Oldsmobile Firenza Dual Battery System Controller Set, and 1984 Oldsmobile Firenza Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller