a bonding system for a tank battery containing a flammable or combustible product being stored or conveyed , including a bonding conductor , an electrically conductive base member mounted on the tank , the electrically - conductive base member electrically connected to the bonding conductor and to ground installed within each tank and also including a flexible conductive medium with an upper end and a lower end and a plurality of fine electrically - conductive metal wires each having a proximal end and a terminal end , the proximal ends of which are intertwined with the flexible conductive medium to be in electrical connection with the electrical conductive medium , the upper end of the flexible conductive medium electrically connected with the electrically conductive base member and a plurality of static drains located proximate to the highest points of the tank battery and electrically bonded to said bonding conductor .