LOMUI 3900mAh High Capacity Battery for Samsung Galaxy S4 - Ship From US 100% brand New! Utra-high capacity lithium-ion battery. Hybrid of power & stable. Capacity: 2800mAh The battery operation time depends on conditions such as: Transmitting power level, Signal (distance between the phone and the base station), Network parameters defined by the operator. * Perfect replacement for your Samsung Galaxy S4 i9500