Ramsond 100 Watt 100w W Monocrystalline Photovoltaic PV Solar Panel Module 12V Battery Charging 100 Watt Monocrystalline Photovoltaic (PV) Solar Panel - Nominal Output Voltage 12V - Grade A Solar Cells - 17% efficiency ***FREE SHIPPING*** Maximum/Peak Voltage (Vmp): 18.5 V Open Circuit Voltage (Voc): 22.7 V Maximum/Peak Current (Imp): 5.41 A Short Circuit Current (Isc): 5.55