Extended Battery for Sony PSP-1000, PSP-1000G1, PSP-1000G1W, PSP-1000K, PSP-1000KCW Capacity: 3650mAh / 13.50Wh Type: Li-Polymer Volts: 3.7V Size : 58.16 x 35.97 x 23.68mm Certificated with ISO9001, RoHS & CE;