... battery into the Box to be propitious to install the solar system and reduce the line fault.2.with the function :charge ... ,Working tempriture:-20°C~50°C 8,solar mould size:570*330*17(MM)9,System size:250*190*110(MM)10 ... and angle ,then put the solar cable plug into the port,the charge lamp light,the system start charging.2.Use DV12V ...