ENERGIE 4000 WATT 12 VOLT POWER CELL NOMINAL VOLTAGE: 12 VOLTS AMPLIFIER WATTAGE: 4000 WATTS CAPACITY: 90 AH GROUP SIZE: 27 POSITIVE TERMINAL: LEFT WEIGHT: 59 LBS. SCREW DIA.: 8MM L X W X H: 12.10″ X 6.66″ X 8.31″