ALEKO Solar Panel Monocrystalline 25W for Any DC 12V Application (Gate Opener, Portable Charging System, Etc.) Aleko 25 watt monocrystalline solar panel - nominal output voltage 12v Operating voltage (vmp): 175v Operating current (imp): 135a Open Circuit Voltage (Voc): 220V Solar cell: 36pcs, weight: 6 lb