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