High-quality hail-proof panels, a versatile, sturdy design.
12V 10A PWM charge controller, over-charge and over-discharge protection for the battery.
Compact size, easy for storage and transit.
High-efficiency solar cells, small size and easy to take.
DIY for tent and backpack.
Solar panels can work in normal daylight and cloudy weather but compare to the bright sunny day, the output will be lower. While in the bright sunny day, solar panels can achieve max output. and also when you use your solar panels to charge a battery, the charging time will be shortened on a bright sunny day. Solar panels will achieve more energy than putting the solar panels inside the window even if there are a lot of sunlight inside. Some of the solar cells will probably shaded which will reduces the efficiency of the soalr panels and put some strain on shaded solar cells to pass current generated by sunlit solar cells. If you are considering putting a solar panel inside the caravan or boat next to the window, think about that why not put it outside and get more power.