... .Best cost performance ratio 4.wide applicat Specification: 1, Polymer Lithium-ion battery: 4Ah/5V , high energy and safe. . 2, It come with ... ), we use female connector, so you only need one cable for charging and discharging, easy to take. 3,The input port ... 100ma current power under the sunshine. 8, 2800mAh Capacity buildin battery can charge two times of your mobilephone. 9,Whole set ...