The invention relates to an electrically powered industrial truck, in particular a narrow aisle forklift truck, comprising a battery box for housing a battery block, which box is open on at least one side for removing the battery block in the width direction of the vehicle and comprises on its top face a strut extending substantially in the longitudinal direction of the vehicle, and at least one locking device for the battery block housed in a battery box, wherein the at least one locking device comprises a mount associated with the strut, a pivot shaft, which extends above the battery box in the width direction of the industrial truck and is pivotally held by the mount, and a pivot lever, which is carried by the pivot shaft and is pivotable between a locking position and a releasing position, wherein the pivot lever is designed, when in its locking position, to support the battery block in the width direction of the vehicle and, when in its releasing position, to release the battery block in the width direction of the vehicle.