... remains when you are charging and discharging.Specification:1, Polymer Lithium-ion battery: 2800mAh/3.7V , high energy and safe.2,Intelligent capacity ... indicator, can indicate the battery capacity from 1% to 100% by LCD screen.3, It ... 100ma current power under the sunshine.9, 2800mAh Capacity buildin battery can charge two times of your mobilephone.10,Whole set ...