Tenergy TN600 Wall Smart Charger for 6V & 12V Sealed Lead Acid Batteries Built-in Auto Voltage Detection feature intelligently identifies the voltage of your sealed lead acid battery, and delivers the most suitable charging output. 3-Stage Charging design ensures your battery will get charged quickly and stay charged at 100% even when you leave it connected to the charger. Full protection prevents over voltage, short circuit, and reverse-polarity. Buy with confidence, your charger includes a 12-month warranty. Compatible with all 6V/12V sealed lead acid (SLA) batteries. Input: 100-240VAC (50-60Hz); Output: 6V & 12V, 500mA; Output Connector: Alligator Clips