OER Parts offers a wide selection of Battery Accessories for your 1970 Plymouth GTX. OER Parts offers 1970 Plymouth GTX Battery Tender, 1970 Plymouth GTX Battery Managment System, 1970 Plymouth GTX Dual Battery System Controller Set, and 1970 Plymouth GTX Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller