As the professional manufacturer, we would like to provide you Solar Charger and Battery Pack Combo 20000mah. Our solar power bank adopts efficient and leading solar panel technology, can be charged in outdoor environment, and provides convenient mobile charging function. At the same time, it also uses high-quality battery cells and protection devices to ensure that users' mobile devices receive the best charging protection. If you are looking for a high-quality mobile charging device, our solar power bank is definitely your best choice.