... .With intelligent display system,it can indicate the status of battery,charging,mistake,the connection of AC and DC output. 5 ... design, with all the control unit and high power lithium battery pack inside.LED indicates the working state of power systemSolar energy ... -220v-50Hz output access, output power 200 w max.Lithium battery pack capacity: 500wh cycle life for 600 times.Matched solar panel ...