ELECTRONIC DEVICE

An electronic device includes a housing and a battery holder configured for holding a battery and removably inserted into the housing. A positive terminal and a negative terminal on the side of the battery holder are arranged side by side and a positive terminal and a negative terminal on the side of the housing are arranged side by side. The housing and the battery holder are provided with either a recessed groove extending in an insertion direction in which the battery holder is inserted into the housing or a protrusion extending in the insertion direction, and the recessed groove and the protrusion constitute a guide portion.