Abstract: A battery unit includes (i) a circuit board element, (ii) a lighting element which is configured to display a charge state of the battery unit, (iii) a light guiding element, and (iv) a button element. The lighting element is arranged on the circuit board element. The light guiding element is in contact with the lighting element to guide a beam of light emanating from the lighting element. The button element is arranged on the circuit board element. The light guiding element is configured to guide a force that acts on the light guiding element, to the button element, by way of changing the shape of the light guiding element.

Abstract: A battery cell assembly includes (i) at least one battery cell, (ii) a cell holder element at least partially enclosing the battery cell, and (iii) a multi-part housing configured for receiving the battery cell, wherein the housing includes at least a first housing part, in particular a side part, and a second housing part, in particular an interface housing part or a cover. The first housing part includes a first interlocking element, the second housing part includes a second interlocking element, and the cell holder element includes a third interlocking element which are configured to form a positive-locking connection with each other. At least one of the interlocking elements, in particular the second interlocking element, is configured as the protruding interlocking element, and wherein the protruding interlocking element engages in the two other interlocking elements.

Abstract: A cell holder for at least two battery cells includes at least two battery-cell receivers, each battery-cell receiver configured to receive a single battery cell. The battery-cell receivers each including a rigid region and a flexible region. The flexible region is arranged partially or entirely in the rigid region.

Abstract: A battery pack device includes (i) at least one battery pack housing, and (ii) at least one interface for an electrical and mechanical connection to a consumer which is arranged on an interface side of the battery pack housing. The interface includes at least one contact support which is arranged adjacent to a wall of the battery pack device. The wall is designed to be curved.

Abstract: A battery pack device for a battery pack, in particular a pouch cell battery pack, includes at least one heat conducting element which has at least one battery cell contact section for arrangement on at least one battery cell, preferably between two battery cells, of the battery pack and for dissipating heat from the at least one battery cell. The battery pack device further includes at least one temperature measuring unit, which has at least one temperature sensor element thermally coupled to the heat conducting element. The temperature sensor element is arranged outside the battery cell contact section of the heat conducting element.

Abstract: A battery pack is disclosed that includes a housing, including a cell holder, including at least one battery cell, the battery cell being at least partially received in the cell holder, including a cell connector, the cell connector being designed for electrical connection of the battery cell, and including a printed circuit board, the cell connector being electrically connected to the printed circuit board. The battery pack also has a mounting element to support the connection of the cell connector to the printed circuit board, the mounting element being located in a cut-out of the printed circuit board.

Abstract: A cell holder for at least two battery cells includes at least two battery-cell receivers, each battery-cell receiver configured to receive a single battery cell. The battery-cell receivers each including a rigid region and a flexible region. The flexible region is arranged partially or entirely in the rigid region.

Abstract: A handheld machine tool, which has a housing including a handle, a drive motor situated inside the housing, and an interface for establishing a mechanical and/or an electrical connection between the handheld machine tool and a battery pack, the interface having a base element for the electrical and/or mechanical connection of the interface to the handheld machine tool, and a separate contact carrier including at least one contact element for the electrical and/or mechanical contacting with at least one corresponding mating contact element on the battery pack.

Abstract: A rechargeable battery pack interface device includes: at least one connecting unit that is designed to detachably mechanically connect a rechargeable battery pack to a consumer, the mechanical connection being detachable using a relative movement of the rechargeable battery pack relative to the consumer; and a retaining unit that is designed in such a way that, in a non-activated state of the retaining unit, the mechanical connection is detachable using the relative movement of the rechargeable battery pack with respect to the consumer and, in an activated state of the retaining unit, the mechanical connection is detachable using another relative movement which differs from the relative movement.

Abstract: A temperature sensor device for a battery pack. The temperature sensor device has an electronics unit including a circuit board, at least one temperature sensor which is connected to the electronics unit, the temperature sensor being connected to the electronics unit with the aid of a carrier element, the carrier element being fastened at a first fastening point and at a second fastening point on the circuit board, and the at least one temperature sensor is situated in the region of the second fastening point. A positioning element is placed between the circuit board and the carrier element in the region of the second fastening point, which is developed for positioning the at least one temperature sensor.

Abstract: A handheld machine tool, which has a housing including a handle, a drive motor situated inside the housing, and an interface for establishing a mechanical and/or an electrical connection between the handheld machine tool and a battery pack, the interface having a base element for the electrical and/or mechanical connection of the interface to the handheld machine tool, and a separate contact carrier including at least one contact element for the electrical and/or mechanical contacting with at least one corresponding mating contact element on the battery pack.

Abstract: A rechargeable battery pack interface device includes: at least one connecting unit that is designed to detachably mechanically connect a rechargeable battery pack to a consumer, the mechanical connection being detachable using a relative movement of the rechargeable battery pack relative to the consumer; and a retaining unit that is designed in such a way that, in a non-activated state of the retaining unit, the mechanical connection is detachable using the relative movement of the rechargeable battery pack with respect to the consumer and, in an activated state of the retaining unit, the mechanical connection is detachable using another relative movement which differs from the relative movement.

Abstract: A hand-held power tool, in particular a drilling hammer and/or chisel hammer, that includes at least one housing, at least one handle, and at least one interface device for establishing an electrical and mechanical connection to at least one rechargeable battery pack. The hand-held power tool includes at least one damping unit that is provided for supporting the at least one handle relative to the at least one housing in a vibration-damped manner. The at least one interface device is situated on the at least one handle.