OER Parts offers a wide selection of Battery Accessories for your 1978 Mercury Bobcat. OER Parts offers 1978 Mercury Bobcat Battery Tender, 1978 Mercury Bobcat Battery Managment System, 1978 Mercury Bobcat Dual Battery System Controller Set, and 1978 Mercury Bobcat Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller