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