Abstract: A mobile phone charging device with exchangeable battery cell including a upper housing, a partition board, a lower housing and a battery cell cover. The device includes a terminal cover; a main board; a button handle; a plug portion, including a circuit board and a plug soldered onto the circuit board. The circuit board has with a pin header through which the plug is electrically and mechanically connected to the female header on the main board; a recharging port, which is attached to the main board, a battery cell and a battery cell cover. The lower housing has a recharging port opening through which the charging plug of an external power adapter is connected.