OER Parts offers a wide selection of Battery Accessories for your 1990 Pontiac Sunbird. OER Parts offers 1990 Pontiac Sunbird Battery Tender, 1990 Pontiac Sunbird Battery Managment System, 1990 Pontiac Sunbird Dual Battery System Controller Set, and 1990 Pontiac Sunbird Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller