The utility model belongs to the technical field of the battery, concretely relates to mobile phone battery. This mobile phone battery is including positive pole, negative pole, protection shield, battery core and casing, be provided with electric core negative bus mouth, communication interface, voltage detecting interface, charge negative bus mouth and thermistor on the protection shield, the battery core sets up in the casing, and the protection shield is located battery core top, sets up at casing upper portion inner wall, and the battery core is connected with the protection shield electricity, and anodal and negative pole setting is at the casing top, and positive pole and negative pole are connected with the protection shield is electric. The protection shield has the intelligent control circuit that suits with the battery core, does it enable the battery core with 5 10C's charge rate carries out the quick charge, has shortened charge time greatly.