A battery-type determination apparatus includes a battery installation unit equipped with battery connection terminals in which a battery is installed, a voltage detector that detects a voltage generated by Seebeck effect between a battery connection terminal and an electrode of the battery, a temperature rise controller that raises a temperature at a contact point between the electrode of the battery and the battery connection terminal, and a type determination unit that determines a type of the battery installed in the battery installation unit, based on the voltage detected by the voltage detector with the temperature risen at the contact point.