Yosisun 50W Watts 50 Watt Monocrystalline Solar Panel Off Grid 12 Volt 12V RV Boat Photovoltaic With Junction box ,But without MC4 Connettor and Cable For DIY use and small devices charging Guaranteed Positive Output Tolerance (0-3%) Withstand high wind (2400 Pa) and snow loads (5400 Pa) & Excellent performance in low light environments High Modules Conversion Efficiency, 50 watt Monocrystalline solar panel charges 12v battery