OER Parts offers a wide selection of Battery Accessories for your 2004 Mercury Monterey. OER Parts offers 2004 Mercury Monterey Battery Tender, 2004 Mercury Monterey Battery Managment System, 2004 Mercury Monterey Dual Battery System Controller Set, and 2004 Mercury Monterey Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller