OER Parts offers a wide selection of Battery Accessories for your 1939 Chevrolet Master 85. OER Parts offers 1939 Chevrolet Master 85 Battery Tender, 1939 Chevrolet Master 85 Battery Managment System, 1939 Chevrolet Master 85 Dual Battery System Controller Set, and 1939 Chevrolet Master 85 Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller