Arterra WF-8955-MBA 55 DC Amp Replacement Main Board Assembly Automatic three-stage converter/charger Power Input: 950W Input Voltage: 105-130 VAC/60 Hz Output Current: 55A Output Voltage: 13.6 VDC (normal) / 13.2 VDC (trickle charge) / 14.4 VDC (bulk charge)