Abstract: A battery locking means comprising two nuts adapted to be threaded to the top ends of two battery hold down posts respectively located on opposite sides of the battery. One of the nuts has a single chain link attached thereto and the other nut has attached thereto a chain link of a length of chain. The length of the chain is sufficient to extend over the battery to allow one of its links to fit around a single link of chain whereby the shackle of a padlock may be inserted through the single link to prevent removal of the battery.