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