Satisfy all the battery charging needs without any hassle. CTEK comfort Connect gives the opportunity to fast and simple reach even well hidden batteries in the vehicle. There are three different sizes depending on the battery terminals. There is no need to hassle with battery clamps every time, Just permanently mount comfort Connect on every battery that needs charging and easily charge and maintain the batteries after use and for a prolonged life. CTEK comfort Connect fits CTEK US 800, MULTI US 3300, MULTI US 4. 3, 4. 3 Test & charge, 4. 3 Polar, mxs 5. 0, CT5 time to go and multi US 7002.