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