NOVELTY - A battery pack (10) for electric or hybrid vehicle has multiple batteries (12a-c) connected in series by battery connectors (14). Each battery connector comprises a pair of battery pole covers (16), a connect-disconnect safety device (18), and a pair of fasteners. The connect-disconnect safety device (18) has a conductive element, and an interrupter. The interrupter includes a pyrotechnic charge and a mechanical cutter adapted to cut a central portion of the conductive element in the event of the vehicle being involved in a collision.    USE - A battery pack for electric or hybrid vehicle.    ADVANTAGE - The battery connector reduces the risks of potential electric shocks during assembly, servicing and in emergency situation.    DETAILED DESCRIPTION - A battery pack (10) for electric or hybrid vehicle has multiple batteries (12a-c) connected in series by battery connectors (14). Each battery connector comprises a pair of battery pole covers (16) made of an electrically insulating material mounted onto battery poles of two adjacent batteries, each battery pole cover having a receptacle area and an aperture providing access to the battery poles; a connect-disconnect safety device (18) having a conductive element made of an electrically conductive material inserted into the receptacle area for electrically connecting the two adjacent batteries, and an interrupter, where a central portion of the conductive element passes through the interrupter, the interrupter includes a pyrotechnic charge and a mechanical cutter adapted to cut the central portion of the conductive element in the event of the vehicle being involved in a collision, thus disconnecting the series connection of the batteries; and a pair of fasteners for securing the conductive element to the poles of the two adjacent batteries. An igniter sets off the pyrotechnic charge triggered by an electrical signal received from an electronic control unit (ECU) of the vehicle sensing a collision. Each fastener is positioned inside one of the pair of battery pole covers; and includes a threaded portion made of metal and an electrically insulated portion made of a non-conductive material. The electrically insulated portion of the fasteners being accessible through the apertures of the battery pole covers.    DESCRIPTION OF DRAWING(S) - The drawing is a downward front perspective view of a portion of an automotive battery pack connected in series with battery connectors.    Battery pack (10)    Batteries (12a-c)    Battery connectors (14)    Battery pole covers (16)    Connect-disconnect safety device (18)