Keeps your battery fully charged and maintained to extend battery life. Monitoring circuitry automatically turns charger on & off as needed. Fully protected against overcharging, short circuits, and reverse polarity. Features red/green LED indicator light status. Includes both clamp and fused ring-terminal connection adapters. Works on all 6 or 12 volt lead-acid Wet/AGM/Gel batteries. Plug charger it into any 110 volt socket, connect to your battery, and forget about it!