High Conversion Efficiency： 300W solar panel with high quality panel, power conversion efficiency up to 23%. Good light transmission, the more sunlight you get, the higher the charging efficiency. Plug and play： The holes reserved for the solar panel kit allow for quick installation and fixing, solar panels can be installed on uneven surfaces, very easy to install, carry and hang. Waterproof Design： The solar cells of the solar panel have a waterproof design, prevent short circuit or damage caused by rain, can withstand different environments, and are suitable for outdoor and indoor use. Wide Application： The solar cell of the solar panel is suitable for outdoor and indoor use, very suitable for caravans, boats, batteries, houses, caravans, gardens, outdoors. It can generate power in most weather conditions. Package List: 1 x 300W Solar Module 1 x Charge Controller 1 x Clip Cable 1 x Car Charger 4 x Suction Cups