OER Parts offers a wide selection of Battery Accessories for your 1966 Pontiac Beaumont. OER Parts offers 1966 Pontiac Beaumont Battery Tender, 1966 Pontiac Beaumont Battery Managment System, 1966 Pontiac Beaumont Dual Battery System Controller Set, and 1966 Pontiac Beaumont Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller