A mobile electronic device having a contact module and a method of preventing a rechargeable battery from exploding using a contact module. The contact module includes a contact module body disposed inside a mobile electronic device; a plurality of contact terminals elastically fitted to the contact module body to be electrically connected to contact terminals of the rechargeable battery; and a temperature sensor module disposed on one side of the contact module to detect a temperature of the rechargeable battery. The contact module is embodied by setting contact terminals and a temperature sensor module into one unitary module, and can correctly measure the temperature of the rechargeable battery to effectively prevent the rechargeable battery from exploding when the battery is being charged.