Electric device

The invention provides an electric device capable of improving the degree of freedom of electrical connection with a connected part while ensuring the strength of withstanding the attachment and detachment of a battery, and capable of suppressing the transmission of vibration generated by the attachment and detachment of the battery to the connected part. An electric device is provided with a conductive contact part (160), a mounting part (161), and a motor. The contact part (160) is mounted on the mounting part (161). The motor operates by receiving power from the battery (4) via the contact part (160). The contact part (160) is formed as a single plate integrally having a first connection part (1600) and a second connection part (1601). The first connection part (1600) is mechanically and electrically detachably connected to the battery (4). The second connection part (1601) is electrically connected to the connected part. The second connection portion (1601) is thinner than the first connection portion (16