1Mobile phone battery for nokia battery BL -4CT 2.Cell chemistry PCM:rechargeable li-ion battery 3.Normal capacity:1050mah 4.Standar voltage:3.7v 5.Double protection IC for more safety using 6.Gilded and flexible connector ,better conductive propertiey 7.Guarantee time:1 year cautions: 1.Do not disassemble the battery 2.Do not short circuit the battery terminal 3.Do not throw the battery into fire or heat 4.keep the battery in a cool surrounding if it stands by