OER Parts offers a wide selection of Battery Accessories for your 1977 Pontiac Astre. OER Parts offers 1977 Pontiac Astre Battery Tender, 1977 Pontiac Astre Battery Managment System, 1977 Pontiac Astre Dual Battery System Controller Set, and 1977 Pontiac Astre Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller