The CTEK MUS 3300 Battery Charger System is a battery charger for households and shops with multiple vehicle types. CTEK’s battery charging system allows owners to outfit all their 12V equipment with an easy-access charging port that makes connecting to the charger fast and safe. From cars to lawn mowers to snowmobiles, the MUS 3300 can monitor and maintain all common battery types including AGM batteries. the MUS 3300 has built-in short-circuit protection and is designed to be connected to the battery while still in the vehicle, without fear of damaging sensitive vehicle electronics. CTEK offers optional accessories including the Comfort Indicator and Battery Status Indicator.