OER Parts offers a wide selection of Battery Accessories for your 1985 Ford Thunderbird. OER Parts offers 1985 Ford Thunderbird Battery Tender, 1985 Ford Thunderbird Battery Managment System, 1985 Ford Thunderbird Dual Battery System Controller Set, and 1985 Ford Thunderbird Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller