A6 VARTA SILVER AGM Battery A6 VARTA SILVER AGM xEV 80AHChange car battery (start/stop type). VARTA® Silver Dynamic AGM batteries are ideal for cars equipped with Start-Stop systems, for which the battery needs to be quickly recharged through braking energy recovery technology.Three times longer service life than a conventional battery.Maximum cold start performance (CCA) that enables the engine to start even in extreme weather situations while ensuring perfect operation of all comfort and safety equipment.Recyclable and manufactured with energy-saving systems.