CTEK SMARTPASS 120S with Installation Kit, 40-678

CTEK Smartpass 120S | 120A Power Management SystemTake complete control of your vehicle´s auxiliary power with the CTEK Smartpass 120S, a sophisticated 120A Power Management System designed for demanding dual battery applications. Engineered for RVs, marine vessels, and commercial vehicles, the Smartpass 120S is more than just a charger, it´s an intelligent energy distribution unit that ensures your critical systems always have the power they need, exactly when they need it. It works by safely separating your starter and service batteries, allowing you to power your onboard equipment directly from the alternator when the engine is running, which dramatically accelerates the charging of your service battery.The Smartpass 120S is the ultimate solution for anyone who relies on a secondary battery for refrigerators, lights, winches, and other high-demand electronics. It prioritizes power distribution, first supplying consumers and then directing the remaining alternator power to charge you