Abstract: The proposed disposable charger for a mobile phone or the like comprises a pack of two thin flat batteries which are arranged side by side and have outwardly projecting positive and negative contacts. The batteries are identical but overturned relative to each other whereby their positive contacts are located closer to each other near the adjacent sides of the batteries while the negative contacts are located remotely to each other. Since the contacts are coplanar with the surfaces of the batteries, a gap is formed between the contacts of both batteries. Inserted into this gap is a double-sided printed circuit board with a wiring that interconnects the contacts of the batteries in an appropriate manner. The batteries and the printed circuit board are sandwiched and fixed between the base plate and the cover of the charger.