<p>An electric device according to the present invention includes a main body portion (10) of the electric device that is designed to be connected to a battery pack (18). A connecting portion (15c) for connecting the battery pack (18) is formed to the main body portion (10) of the electric device. A terminal supporting plate (30) having at least a pair of terminals (31,32) and for connecting terminals of the battery pack (18) is fixed to the connecting portion (15c). The terminals and are arranged on a front surface side of the terminal supporting plate (30) that is exposed from the connecting portion (15c). An electric material component (51;53;38) is arranged on a rear surface side of the terminal supporting plate (30).</p>
