Specifications: Input Voltage: 110VAC Input Current: 5A Nominal Voltage:12V Bulk Charge Voltage: 14.1V (GEL), 14.4V (AGM), 14.7V (WET), 14.7V (CALCIUM) Float Voltage: 13.7V with Pulse Feature. Bulk Charge Current: 20A Cooling Fan: Automatic Temperature Controlled Battery Type: SLA, GEL, AGM Battery Capacity: 80-400Ah Connector: Insulated Alligator Clamps Size: 8.5 L x 4.5? W x 2.5? H Weight: 3 lb.