Abstract: A management device includes: a first communication unit that receives state data of an energy storage device; a second communication unit that receives identification data transmitted from a host device; an external terminal to which a switch is connected and which receives an input from the switch; a state detection unit that detects a state of the switch via the external terminal; and a processing unit that stores the identification data in a storage unit when the second communication unit receives the identification data and the state detection unit detects that the switch is in a specific state, in which the state data received by the first communication unit is transmitted to the host device or another device in association with the identification data stored in the storage unit.

Abstract: A battery unit arrangement structure for a vehicle increases legroom for a passenger while disposing a battery in front of the passenger seat. The structure includes a dash vertical wall separating an interior from an engine compartment, a floor panel of the interior, and a curved corner portion connecting the lower end of the dash vertical wall and the front end of the floor panel together. The battery unit is mounted on the corner portion in front of the passenger seat with the upper surface of the battery unit inclined downward toward the vehicle rear so the rear end of the battery unit is lower than the front end of the battery unit. The battery unit is covered from above with a cover member inclined downward toward the vehicle rear so the rear end of the cover member is lower than the front end of the cover member.