75 amp Switch-Mode Converter The innovative switch-mode power converter from WFCO contains a built-in microprocessor for high-tech performance providing a clean, regulated 12 VDC output for all appliances sensitive to the current. The microprocessor provides three modes of control: Quick Boost provides a 14.4 volt charge for four hours. The Normal Mode is preset at 13.6 volts. The Storage Mode is preset at 13.2 volts with a 20 Microboost timer to assist in preventing sulfating of the batteries. Input Voltage: 120 VAC Frequency: 60 Hz Output Voltage: 12 VDC Current: 75 Amps Charge Rate Up To: 75 Amps This charger is replaced by the 74-WFCO9875 When you place your order for the 74-WFCO8875 you will recieve the replacement. The only diffrence is the 9875 is in a smaller case.