of the shim that touches the contact 104 is made conductive the face of the shim that touches the battery terminal 102 is made non conductive the shim 200 when inserted between the battery terminal 102 and contact 104 makes an electrical connection between contact 104 and a conductive member 204 while breaking the electrical connection between the battery terminal 102 and contact 104 the shim 200 when moved to a second position breaks the connection between contact 104 and conductive member 204 while permitting the battery terminal 102 to connect to contact 104 conductive member 204 for example may be connected directly or through a resistance to ground or other appropriate power potential to discharge any capacitance connected to contact 104 conductive member 204 may be a contact for sliding connection as illustrated in fig2 as an alternative conductive member 204 may be a wire that is fastened directly to the conductive face of the shim 200 the shim in fig1 a 1c and fig2 is depicted as a sliding device as an alternative the shim can be implemented as a push pull device in fig3 a shim 300 with tab 302 may be pushed into the enclosure 304 to break battery contact and pulled from the enclosure to make battery contact shim 300 may be removable or captured as still another alternative the shim can be implemented as a rotating device in fig4 a shim 400 may be rotated to make or break.