OER Parts offers a wide selection of Battery Accessories for your 1970 GMC G35/G3500 Van. OER Parts offers 1970 GMC G35/G3500 Van Battery Tender, 1970 GMC G35/G3500 Van Battery Managment System, 1970 GMC G35/G3500 Van Dual Battery System Controller Set, and 1970 GMC G35/G3500 Van Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller