GT4000S has all the smart protection through GOOLOO built-in smart clip, just like other series of GOOLOO jump starters that are equipped with smart jumper cables for safety protection. All GOOLOO jump starters are designed with a wide compatibility range that can jump-start all your 12V vehicles easily and conveniently, from cars and motorcycles to RVs, ATVs, SUVs, tractors, and boats.