This 6A smart charger is suitable for both 6V and 12V vehicles and is recommended for START/STOP batteries. It is also compatible with lead, gel, calcium, AGM, and EFB battery types. The charger keeps batteries in good condition without the risk of overcharging. It features one-button operation and a large backlit digital display for ease of use, as well as reverse polarity and short-circuit protection for safety. The charger automatically adjusts to a long-term maintenance mode when the vehicle's battery is full. It offers a 7-stage charging process that adjusts to the battery type, a cold weather charging mode, and is IP65 rated for use in all weather conditions. Quick connectors with clamps or O-ring terminals are included for long-term connection. Technical specifications include: Voltage Output: 6V/12V DC, Voltage Input: 220-240V AC, Charge Rate: Up to 6A, Max Battery Size (Charge): 110Ah, Max Battery Size (Maintain): 160Ah, Min Battery Size: 4Ah, Product Size: 254 x 144 x 127 mm.