Power2tek 3.7V BATTERY Fits to DELL X1111, Axim X30, Axim X3i, Axim X3 +FREE ToolSet Capacity: 2000mAh Type: Li-ion Volts: 3.7V Size : 59.80 x 59.8 x 13.09mm Certificated with ISO9001, RoHS & CE;