NOVELTY - The method involves positioning connectors (30) adjacent to electrically conductive battery tabs (24). The connector is heated to a temperature higher than the glass transition temperature of a shape memory polymer. A load (18) is applied on connector to transform the connector to conforming shape while cooling the connector to a temperature lower than the glass transition temperature. An adhesive bond is formed between connector and battery tabs by the conforming shaped connector, to operatively attach the battery tabs, and to provide electrical connection between the battery tabs.    USE - Method for reversibly connecting two electrically conductive substrates such as battery tabs of battery pack (all claimed) such as multi-cell battery pack e.g. lithium-polymer or lithium ion type battery pack of vehicle powertrain system in hybrid vehicle.    ADVANTAGE - The electrically conductive connector allows recycling of battery packs and battery pack cells by providing simple, releasable unit of connecting the battery cell tabs which when released or reversed provides a recyclable battery cell including a reusable battery tab, and a reusable connector. Each battery pack and/or battery cell retains the significant portion of its capacity at the end of useful vehicle service life, so that the battery pack and/or battery cell can be recycled and repurposed to other applications requiring lesser capacity than the initial vehicle battery application. By providing a releasable attachment for battery cell tabs, the battery cell can be detached at the end of the vehicle service life without compromising the integrity of the battery tab. By disconnecting the battery cells, the battery cells can be automatically disassembled and/or electrically shut off when the temperature limit is exceeded, such that the electrical connection between the cells is disrupted to protect the disconnected cell from deterioration or damage for maintaining the integrity and functionality of the battery cell.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a battery pack.    DESCRIPTION OF DRAWING(S) - The drawings show the side views of the battery pack.    Battery pack (12)    Load (18)    Battery tabs (24)    Connectors (30)    Cavities (40)