Vehicle Battery Chargers features: Automatically adjusts the charge current and maintainability. Automatically switching from fast charge, to top-off, then to trickle charge. Pulse repair function can help to repair your loss battery and extend battery life. The battery charger offers safety features including reverse-polarity protection, over-current protection, overload protection, over-voltage protection, over-charge protection, and over-temperature protection. Features Material: Copper Size: 15.00 x 8.50 x 6.20cm/ 5.89 x 3.34 x 2.44 inch Input voltage: AC110-220V (50-60HZ) Output voltage: DC13.8-15.5V Output current: DC-6A (MAX) Scope of application: 12V 2Ah-100Ah EU: 220V Adopt ABS flame-retardant shell, fireproof, electric shocks, corrosion resistant, solid and durable Built in circuit protection guards against reverse polarity, sparks, overcharging, over-current, open-circuits, short-circuits and overheating. Smart LCD display shows the charging status and battery status to make you more assured of charging Automotive battery charger has a durable and efficient design. Suitable for outdoor use. Portable and powerful Battery chargers just plug and leave it for charging and maintaining your batteries automatically for long time.