Abstract: A connecting device for connecting a battery pack to an electric bike includes a guide unit for linear guidance of the battery pack in the connection process, and a locking unit for locking the battery pack to the electric bike. The locking unit is arranged on a first section of the guide unit. The connecting device is designed such that the battery pack can be connected to the electric bike exclusively by way of a linear movement. The connecting device includes a securing unit for securing the battery pack in the unlocked state. The securing unit includes a movable securing element.

Abstract: A rechargeable battery pack. The rechargeable battery pack includes a housing, at least one rechargeable battery cell including a cell connector, and a circuit board. The at least one rechargeable battery cell being electrically connected to the circuit board via the cell connector. The circuit board includes a connection point for the materially bonded connection of the cell connector to the circuit board, the connection point being situated on a side of the circuit board facing away from the rechargeable battery cells.