1,solar panel 2.Long service life 3.High Efficiency Solar Cells 4.Special Aluminum Frame Design 5.High Transmission. solar panelEffsun solar energy ... under no wind and solar conditions can keep lighting 4days,above 10 hours per day.4,Battery protection:intelligent charge and ... ,cold,wet and so on conditions.9,Control:with battery voltage,controller temperature,charge control.10,Large powered Led ...